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Household Power Saver
Household Power Saver - Efficent? What is the real truth?

A household power low voltage saving devices has recently received a lot of attention from both consumers and manufacturers. It is generally used in residential homes to save energy and to reduce electricity bills. It is a small device which is to be plugged in any of the AC sockets in the house (Mostly near Energy Meter). Moreover, some of the companies claim that their power savers save up to 40% of the energy.

Many people believe that the claims made by the power savers manufacturing companies are false. Almost all people who buy power savers do it to reduce their electricity bills.

Many people who have used these power savers said that they could reduce their electricity bills with the devices; however the reduction was not as much as they had expected. Moreover, they could not figure out if the reduction in electricity bills was due to the power savers or because of their efforts to reduce their electrical usage. There have been several serious discussions about the genuineness of the device.

In this note, we will try to find the real truth behind these power savers which claim to save as much as 40% of energy.

Working Principle of Power Saver as per Manufacture

A Power Saver is a device which plugs in to power socket. Apparently just by keeping the device connected it will immediately reduce your power consumption. Typical claims are savings between 25% and 40%.

It is known that the electricity that comes to our homes is not stable in nature. There are many fluctuations, raise and falls, and surges/Spikes in this current. This unstable current cannot be used by any of the household appliances. Moreover, the fluctuating current wastes the electric current from the circuit by converting electrical energy into heat energy.

This heat energy not only gets wasted to the atmosphere, but also harms the appliances and wiring circuit.

Household power saver device - Schematic diagram
Household power saver device - Schematic diagram

Power Saver stores the electricity inside of it using a system of capacitors and they release it in a smoother way to normal without the spikes. The systems also automatically remove carbon from the circuit which also encourages a smoother electrical flow. This means that we will have less power spikes. More of the electricity flowing around circuit can be used to power appliances than before.

Basically it is claimed that Power savers work on the principle of surge protection technology. Power savers work on straightening this unstable electric current to provide a smooth and constant output. The fluctuation in voltage is unpredictable and cannot be controlled. However, the power savers utilize current fluctuation to provide a usable power by acting like a filter and allowing only smooth current to pass through the circuit. Power savers use capacitors for this purpose. When there is a surge of current in the circuit, the capacitor of the power saver stores the excess current and releases it when there is a sudden drop. Thus only smooth output current comes out of the device.

Moreover, a power saver also removes any type of carbon in the system, which facilitates further smoother flow. The main advantage of power savers is not that they provide a backup system in times of low current, but that it protects the household appliances. It is known that a sudden rise in the power can destroy the electrical appliance. Thus, the power saver not only protects the appliance but also increases its life. Moreover, they also reduce the energy consumption and thus the electricity bills.

The amount of power saved by a power saver depends on the number of appliances on the electrical circuit. Also, the system takes at least a week to adapt itself fully to the circuit, before it starts showing its peak performance. The maximum amount of voltage savings will be seen in areas where in the current fluctuation is the highest.

Household Power Saver Scam Review

Power Factor Correction for residential customers (home owners) is a scam? At most, each unit is worth as an investment. Power factor correction does make sense for some commercial / industrial customers.

Many companies are promoting and advertise that their Power Saver unit are able to save domestic residential power consumption by employing an “active power factor correction” method on the supply line. The concept seems pretty impressive as the concept is true and legally accepted. But practically, we will find that it’s not feasible.

To support above statement first we need to understand three terms:

  1. Type of electrical load of house,
  2. Basic power terminology (KW, KVA, KVAR).
  3. Electrical tariff method of electricity company for household consumer and industrial consumer.

There are basically two kinds of load that exists in every house: one that is resistive like incandescent lamps, heaters etc. and the other that’s capacitive or inductive like ACs, refrigerators, computers, etc.

The power factor of a Resistive Load like toaster or ordinary incandescent light bulb is 1 (one). Devices with coils or capacitors (like pumps, fans and florescent light bulb ballasts)-Reactive Load have power factors less than one. When the power factor is less than 1, the current and voltage are out of phase. This is due to energy being stored and released into inductors (motor coil) or capacitors on every AC cycle (usually 50 or 60 times per second).

There are three terms need to be understand when dealing with alternating (AC) power.

  1. First Term is kilowatt (kW) and it represents Real power. Real power can perform work. Utility meters on the side of House measure this quantity (Real Power) and Power Company charge for it.
  2. The second term is reactive power, measured in KVAR. Unlike kW, it cannot perform work. Residential customers do not pay for KVAR, and utility meters on houses do not record it too.
  3. The third term is apparent power, referred to as KVA. By use of multi meters we can measure current and voltage and then multiply the readings together we get apparent power in VA.
Power triangle
Power triangle

Power Factor = Real Power (Watts) / Apparent Power (VA)

Therefore, Real Power (Watts) = Apparent Power × PF = Voltage × Ampere × PF.

Ideally a PF = 1, or unity, for an appliance defines a clean and a desired power consumption mostly Household Equipments (The dissipated output power becomes equal to the applied input power).

In the above formula we can see that if PF is less than 1, the amperes (current consumption) of the appliances increase, and vice verse.

With AC Resistive Load, the voltage is always in phase with the current and constitutes an ideal power factor equal to 1. However, with inductive or capacitive loads, the current waveform lags behind the voltage waveform and is not in tandem. This happens due to the inherent properties of these devices to store and release energy with the changing AC waveform, and this causes an overall distorted wave form, lowering the net PF of the appliance.

Manufacture claim that the above problem may be solved by installing a well-calculated inductor/capacitor network and switching it automatically and appropriately to correct these fluctuations. A power saver unit is designed exactly for this purpose. This correction is able to bring the level of PF very close to unity, thus improving the apparent power to a great extent. An improved apparent power would mean less CURRENT consumption by all the domestic appliances.

So far everything looks fine, but what’s the use of the above correction?

The Utility Bill Which We pay is never based on Apparent Power (KVA) but it is based on Real Power (KW). The utility bill that we pay is never for the Apparent Power- it’s for the Real Power.

By Reducing Current Consumption Does Not Reduce Power Bills of Household Consumer.

Study of Power Saver in Domestic Load

Let us try to study Household’s Reactive-Resistive Electrical Load and Voltage Spike Characteristic by example.

1. Power Saver in Reactive Load of Home

Let’s take One Example for reactive Load: A refrigerator having a rated Real Power of 100 watts at 220 V AC has a PF = 0.6. So Power=Volt X Ampere X P.F becomes 100 = 220 × A × 0.6 Therefore, A = 0.75 Ampere

Now suppose after Installing Power Saver if the PF is brought to about 0.9, the above result will now show as: 100 = 220 × A × 0.9 And A = 0.5 Ampere

In the second expression we clearly show that a reduction in current consumption by the refrigerator, but interestingly in both the above cases, the Real Power remains the same, i.e. the refrigerator continues to consume 100 watts, and therefore the utility bill remains the same. This simply proves that although the PF correction done by an energy saver may decrease the Amperage of the appliances, it can never bring down their power consumption and the electric Bill amount.

Reactive power is not a problem for a Reactive Load of Home appliances like A.C, Freeze, motor for its operation. It is a problem for the electric utility company when they charge for KW only. If two customers both use the same amount of real energy but one has a power factor of 0.5, then that customer also draws double the current. This increased current requires the Power Company to use larger transformers, wiring and related equipment.

To recover these costs Power Company charged a Penalty to industrial customers for their Low power factors and give them benefits if they improve their Power Factor in. Residential customers (homes) are never charged extra for their reactive Power.

2. Power Saver in Resistive Load of Home

Since a resistive load does not carry a PF so there is not any issue regarding filtering of Voltage and Current, So Power = Voltage X Current.

3. In Voltage Spike / Fluctuation condition of Household Appliances

In above discussion simply proves that as long as the voltage and the current are constant, the consumed power will also be constant. However, if there’s any rise in the input voltage because of a fluctuation, then as explained above your appliances will be forced to consume a proportionate amount of power. This becomes more apparent because current, being a function of voltage, also rises proportionately. However, this rise in the power consumption will be negligibly small; the following simple math will prove this.

Consider a bulb consuming 100 watts of power at 220 volts. This simply means at 240 volts it will use up about 109 watts of power. The rise is just of around 9% and since such fluctuations are pretty seldom, this value may be furthermore reduced to less than 1%, and that is negligible.

Thus the above discussions convincingly prove that energy savers can never work and the concept is not practically feasible.

What happens when Power Saver is installed?

The Fig shows the result of using Power Saver. The air conditioner (which has a large compressor motor) is still consuming reactive power but it is being supplied by a nearby capacitor (which is what is in those “KVAR” boxes). If you were to mount it at the air conditioner and switch it on with the air conditioner plus you sized the capacitor perfectly, then there would be no reactive power on the line going back to the fuse panel.

If the wire between your fuse panels is very long and undersized, reducing the current would result in it running cooler and having a higher voltage at the air conditioner. These savings due to cooler wiring is minimal.

What happens when Power Saver is installed
What happens when Power Saver is installed

A further complication is that if you install the “KVAR” unit at the fuse panel, it does nothing for the heat losses except for the two feet of huge wire between the fuse panel and the utility meter. Many KVAR units are marketed as boxes that you install at a single location.

If your power factor box is too large, then it will be providing reactive power for something else, perhaps your neighbor.


Power factor correction devices improve power quality but do not generally improve energy efficiency (meaning they would not reduce your energy bill). There are several reasons why their energy efficiency claims could be exaggerated.

First, residential customers are not charged for KVA – hour usage, but by kilowatt-hour usage. This means that any savings in energy demand will not directly result in lowering a residential user’s utility bill.

Second, the only potential for real power savings would occur if the product were only put near in the circuit while a reactive load (such as a motor) were running, and taken out of the circuit when the motor is not running. This is impractical, given that there are several motors in a typical home that can come on at any time (refrigerator, air conditioner, HVAC blower, vacuum cleaner, etc.), but the Power Saver itself is intended for permanent, unattended connection near the house breaker panel.

And certainly not in the way the manufacturers recommend that they be installed, that is, permanently connecting them at the main panel. Doing that drags the power factor capacitive when the inductive motors are off and could create some real problems with ringing voltages.

The KVAR needs to be sized perfectly to balance the inductive loads. Since our motors cycle on and off and we don’t use the air conditioner in the winter, there is no way to get it sized properly unless we have something to monitor the line and switch it on and off capacity (capacitors) as necessary.

Adding a capacitor can increase the line voltage to dangerous levels because it interacts with the incoming power transmission lines. Adding a capacitor to a line that has harmonic frequencies (created by some electronic equipment) on it can result in unwanted resonance and high currents.

For commercial facilities, power factor correction will rarely be cost-effective based on energy savings alone. The bulk of cost savings power factor correction can offer is in the form of avoided utility charges for low power factor.

Energy savings are usually below 1% and always below 3% of load, the higher percentage occurring where motors are a large fraction of the overall load of a facility. Energy savings alone do not make an installation cost effective.

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Jignesh Parmar

Jignesh Parmar has completed M.Tech (Power System Control), B.E (Electrical). He is member of Institution of Engineers (MIE), India. He has more than 13 years experience in transmission & distribution-energy theft detection and maintenance electrical projects.


  1. william eilinsfeld
    Nov 09, 2020

    i bought the powervolt deices to save $in my apartment…6 of them! although they may not save me a dime is it ok to leave all or any plugged in for any minimal advantage at all? please repley thanks.bill God bless

  2. Matt
    Oct 11, 2020

    P.T. Barnum said: “There’s a sucker born every minute!” Well, he would of hated me! I’m the eternal skeptic that reads the annoying fine print, reads EVERY REVIEW, & painstakingly searches for the signs of misleading wording in representations of products.

    So, I would have been the guy, excitedly, pointing out which of Mr. Barnums displays were hoaxes. In fact, you’d of likely seen me being thrown out for it & later read my article about it as well.

    The bottom line: there are more than enough cues, tells, facts from electricians, & personal experiences from home-owners who’ve purchased the product, to easily make an accurate assessment of this product.

    For homeowners…these types of products seem all but worthless, with minimal savings. I’m ABSOLUTELY NOT GETTING ONE! Other people have reported a host of problems, with appliances not working properly, and so on.

    Not to mention the elephant in the room! Forget the outrageous claim that it would save homeowners nearly 40% on their heating bills! Think about it. If it really saved that much electricity (“budgeting it”, making it “Cleaner,” or however they want to phrase it, to put lipstick on their pig) IMAGINE WHAT THAT WOULD MEAN FOR THE ENVIRONMENT!!! GOVERNMENTS around the world WOULD BE MANDATING THIS, instead of inferior technologies, in housing EVERYWHERE! (In newly built houses of course, but their would be programs for existing homes) The WHOLE WORLD would be clamoring: “SAVE THE ENVIRONMENT!!!” & “STOP GLOBAL WARMING!!!”

    No, no…I wouldn’t trust these people to watch my dog.

  3. A R Rao
    Oct 05, 2020

    Will powersavers help even if I have a UPS system at home?

  4. David D.
    Sep 06, 2020

    Many people are concerned with the effects of harmonic-generated EMR on human health.

    It would seem that these devices, used as a line conditioner rather than as a power saver, would help in this area.

    What are your thoughts on this?

  5. Granville Eberwein
    Aug 23, 2020

    I bought & installed 2 in the configuration recommended…one near the breaker box & one as far away as possible. There may have been a savings but nothing drastic. Hard to tell. My July bill was $462 & my Aug bill decreased $24 to $438. Can’t really go back to June bill because the summer heat increased so much between May & June. Maybe my Sep bill will give more info but it seems that if there’;s a savings, it’s not nearly what the advertised ‘up to’ amount could be. Live & learn I guess.

  6. Robert Vaughn
    Aug 10, 2020

    I get rewarded for using more electricity. I can be 500 KWH off between 2 bills, but my bill will be only $10 or $15 off. My actual rate for using less than 800 KWH is around 11c, but anything over 2000 KWH is 6.5c. I see no point in investing on new product. I get punished for using less. So I just let it rip.

    Jul 26, 2020

    The only time I use an electric blanket is in the winter…..I put it on my favorite recliner ,WRAP MY BODY IN THE BLANKET.and keep MY BODY WARM…..I DON”T CARE If the house is cold.I ONLY CARE IF MY BODY IS COLD…..that makes more sense to me than a piece of crap plugged into an outlet to SAVE ELECTRICITY

  8. John
    Jul 22, 2020

    I saw the advertisement. I ordered 2 of the “Electricity Saving Boxes“.
    Before the boxes arrived I found (on YouTube) Information stating that the Electricity Saving Boxes do not do what they say they do.
    I emailed the distributor 3 times. No reply. I found a phone number. I called the phone number.
    The person on the other end said that although their Co. has somewhat the same name as the electricity box Co. they are not affiliated with that Co.
    The person stated that they are receiving many calls from concerned box customers stating that they are not receiving reply’s to their emails concerning the box. In addition: the person said that they heard the Company selling the Electricity Saving Box is not excepting returns

    • DJ
      Sep 04, 2020

      It’s “accepting returns” not excepting!

      • Randy
        Sep 22, 2020

        Grammar Police lmao ( . )

  9. Mike Ziegler
    Jul 10, 2020

    After reading the article on the “power saving” devices, I am astonished at the changes in the laws of electronics. If P=IE is still a law of electronics, then the KW per hours the electric company uses to calculate the bill should change if as in the example of the refrigerator are true. from a current usage of .75 amp to .5 amp should result in a KW savings as a refrigerator running on 220 v and .75 amp would equal 165 watts, and take the same Refrigerator running at 220 v and .5 amp would now be 110 watts. So the KW per hour would also be reduced. It is physics and the laws we were all taught about electronics. Now, I am not saying I believe or disbelieve the “power savers” work, but the examples given just do not add up.

    • Dalebert
      Jul 24, 2020

      Considering the voltage and current (0.75Amps) are out of phase, P=IE is not totally true. Multiply the power factor due to phase shift times IE, then the real power is 110Watts. The reason is that the voltage is high before the current starts flowing. For the first instant, voltage is high but current is zero, so the P=IE will be zero. Inductance (motors, coils,) are slow to react so current is lagging the voltage with AC.

      Sep 03, 2020

      Thanks for raising this doubt. While going through the explanation of this M.Tech guy having 13 years of experience, even I got confused with my basic understanding of physics lessons of xth std. where i scored 93%.

      I’m not an expert just a Hotel mgmt. guy interested in physics involved in our daily life. understand this much, that if current demand gets lower we get reduced electricity bills.isn’t it ?

  10. Fanjid
    Jun 13, 2020

    The simplest way to save on electricity bills is to do the tasks yourselves instead of using electrical appliances. Do the dishwashing by hand instead of using a dishwasher. Better still buy paper plates and then you can throw away. Buy extra blankets in winter then you wont need electric heaters.

    • Harry
      Jun 29, 2020

      I’m not sure switching from washing plates and dinnerware, to using throwaway paper plates/plastic utensils will save money. It would depend on how much time/energy/money it costs to produce/distribute/sell the Paper/Plastic items.
      I am so impressed by Jignesh Parmar’s explanations. You are one very, smart man. Thank you.

    • Robert
      Jul 19, 2020

      You’re not thinking clearly, buddy.
      1. Dishwashers typically use less water than handwashing. They can process several meals’ worth of dishes, depending on the number of dish-users, saving on water-heating costs. They also save precious time. By the way, pre-washing dishes is stupid and unnecessary, beyond a light rinsing, if your dishwasher is any good. Wish I had one.

      2.Paper plates!!?? Aaaaaah! Super-wasteful of raw materials and money, and add to the mountains of waste. Where do you think “away” is, anyway?

      3. The only thing you say that makes real sense is to use blankets instead of heaters. Using heat when you’re in bed would be moronic, whether it’s household heat or electric blankets. An exception I use is a small heating pad for my feet that I turn on the lowest setting out of four before getting into bed and which automatically turns off in two hours. It saves me much discomfort from my typically cold feet, which would take easily an hour to warm up without assistance.

    • E Montville
      Oct 10, 2020

      Using paper plates requires trees. We need to use less water and some dishwashers use less than if you washed them by hand. You have to think of the carbon use, not just using less electricity. It’s also a complicated problem.

  11. Charles Rohrer
    Jun 12, 2020

    I was beginning to think there might be something to the “house hold power saver” until the article said it “removed carbon from the electricity”.

  12. Philip S Gilmore
    May 26, 2020

    Many years ago, out in the country, we were the last residence at the end of a 240 volt, 2 phase line (hot, neutral, hot with 240 volts across two hot lines and 120 volts across either hot line to neutral comong off a 4160 volt dual line)(common in USA.). We found that ac units dropped out on hot days and fluorescent lights refused to start. My personal power meter showed voltage in the 113 volt range and lower on some days. Power co. Engineer did not believe me but after 3 calls in one week, he agreed to place a recording meter on the line. When he came back a week later, he had to apologise. Not only was the voltage seldom above 113 volts but it sometimes dropped below 100 for a few minutes each morning. After investigating, he discovered a business 2 places “up stream” from was using several notoriously inefficient motor driven converters to produce 3 phase power for his machine shop. The solution for the power company was to install two capacitors (one for each hot line) that evened out the flow and raised the voltage around the clock for us. They worked but they were not the puny caps put into these energy saver boxes. They were each larger than the transformers (that reduced the 4160 volt lines to 240 volts) and had to be mounted on a new dual pole rack up near line height. That engineer learned something that time… sometimes the customer really IS right!

  13. Philip S Gilmore
    May 26, 2020

    Thanks for the information. I have done a lot of residential and some light commercial wiring over the years (following the US NEC, but never knew why kva and kw were different numbers. I will stick with kw but will be aware that kva is larger than kw and serves no practical purpose for residential wiring. Thank you!

  14. Melissa
    May 22, 2020

    So if I’m understanding this correctly, it will not save money but will prevent uneven electrical current spikes. Which I assume would be better for your electrical system and appliances.


    • Linda Shobe
      Sep 19, 2020

      Hubby did electrical work on submarines for 22 years. He says don’t bother. It’s only highly sensitive electrical equipment than needs “clean” electricity. (no spikes). Things like MRI machines in hospitals. It is good to get a surge protector which does about the same thing and protects your electrical items from harmful spikes. Any financial savings are minimal to non-existent.

  15. Darlene Lewis
    May 19, 2020

    I have a multi outlet strip that is suppose to control surges….it works fine

  16. E. Tingley
    Apr 16, 2020

    Your editor stinks. Multiple typographic errors, poor syntax. No idea what you’re talking about. You only want to sell styff.

    • sean
      Jun 23, 2020

      E. Tingley, are you that really stupid as you appear?

  17. Jacob Sazz
    Mar 09, 2020

    Thank you for this information-rich article! It is indeed true that no device can help us to “save” energy unless we change our habits. We did try a few devices in the past as they claimed to save electricity but none of them really worked. We now use a power monitoring device by Ohm Assistant ( which helps us to monitor the power consumption rather than save it. This is better than all the devices we’ve used so far and I would definitely recommend it (if you’re in India)

  18. Hitendra Amrut Pandya
    Jan 08, 2020

    I do not understand the term “The systems also automatically remove carbon from the circuit which also encourages a smoother electrical flow.” Somebody, please elaborate!

  19. Eric Bogantes
    Jan 07, 2020

    I had been working in energy efficiency more than 25 years, all those “magic savers” are a scam. Power factor correction reduces costs, but households are billed by kWh not kVA, you will save only in wire losses.
    The internal circuit in those energy savers most of the time has a semiconductor (diode or SCR) which inject Harmonic Distortion (THD) in the system making electromechanical meters to read less than real consumption (this is fraud), with electronic meters have no effect.
    I read this thread and saw a lot of non hands on comments. Don´t led be fooled by happy sellers.

    • David
      Jan 20, 2020

      Agreed on residential but disagree on commercial. Our system is patented and is now being installed in over 20 states as we speak for fortune 500, 100 and 50 companies.

      • Art Wilson
        Feb 03, 2020

        I would like to know if this would be beneficial for a residential application where a 1HP motor runs all summer long for a swimming pool? Would you suggest only using it during the summer months when the a/c and pool are working?

        • Philip S Gilmore
          May 26, 2020

          Personally,, if you want to do this, calculate (or have a knowlegable friend do it) what size capacitor(s) is/are needed, then place this new unit in line between pump and power source and switch it automatically (relay or solid state relay) so that it is only online when motor is actually running. Keep in mind that 1 hp is approximately 750 watts plus motor inefficiency. Capacitor will level out the surges but won’t save money because residences are billed by kilowatt usage only. Also, due to the way ac voltage and current flow operate, the capacitor will raise your average voltage, perhaps higher than the motor is designed for. Home pool filters usually do not truly need 1 hp so there will be more inefficiency due to this than power factor correction. Manufacturers use one hp so that they can use one filter/pump assembly for most pool sizes that they make. You may save more if you install it on wire one guage size larger than spec’d – especially if the wire length is close to or over 100 ft.
          My opinon? Get rid of the pool and use someone elses’ pool. Think of the savings in chemical alone!

        • Charlie
          Jul 11, 2020

          Buy an Energy Star variable speed pump, they cost more but many electric companies give rebates as well as the manufactures like Hayward. From everything I have read and all the people talked to, the claim is that they save money. With our power company the electricity is cheaper from 9pm-7am Mon-Fri and all day Sat and Sun, so we run the pump very little during the higher priced time of day. I’ll be replacing our pump next May when the rebates come out, this is it’s 7th year which is average for how long they last.

      • Robert
        Jul 19, 2020

        Ah hah! This is the most telling comment of all. It is an admission by a manufacturer/seller that these things don’t work in homes, which is what the ads I’ve seen are selling to.

  20. Lou Hernandez
    Jan 07, 2020

    2020 USA National Electrical code when adopted state by state now requires a surge protective device on all new residential buildings. The device discussed is NOT a UL 1449 rev 4 surge protective device.

  21. Steve
    Dec 22, 2019

    I had a friend back in the ’70s who sold such a device (and gave one to me). I was a 10″ square box that he told me to hook up outside at the electrical panel. I didn’t, but I did open it up – three capacitors (I don’t remember the uf values) and nothing else. What I remember about capacitors was that they are a ‘short’ to A/C, and an ‘open’ to D/C. So, (and yes a little bit of electronic knowledge can be dangerous!) I decided they really didn’t do anything and I tossed it. I did find a device that was used at the source (refrigerator) and it’s claim was that it reduced the frequency of the electricity to the fridge (after startup) to slow the motor down, because the thought was you really didn’t need all those revolutions for the fridge to do the job. So, less RPMs = less electrical usage. I really don’t think that one worked as well because of intermittent cooling demands. Now, my fridge has a variable speed compressor (digital converter, same principle) that not only saves $$$, but also varies RPM according to demand.

  22. Suro
    Oct 17, 2019

    Everywhere there is science. In earlier times we used to see systems working… these days tech is making a fool of people as well. I remember an electrolux my grandpa bought ran oñ kerosene. Well.. a liter could.keep it alive for 2 weeks… we could see the flame in a metallic mirror…. it was an amazing power saver… let someone use solar instead

  23. Jess
    Oct 12, 2019

    Thanks for the article. I am interested to know whether one of these cheap household devices would work as well as the expensive “cleaners” sold for use with electronic musical equipment. They seem to do the exact same thing. Fluctuating currents can cause audible changes and wear things out faster, but everyone I know is using surge protectors because they are cheap and available.

  24. Doug Zundel
    Sep 21, 2019

    Can you decide Advise us on the new power saving device called okowatt?

  25. R.Samuel
    Jun 24, 2019

    All the power savers advertised are plug in thr it is only single phase. But most houses hzve three phase supply. Can any manufacturerr or supplier explain how a plug in power saver will work on a three phase meter. By your explanation I can understand really you know the subject or not

    • Chris
      Dec 27, 2019

      Not sure where you live, but houses in the USA mostly have single phase power. Older, large homes in hot climates used to be wired with three phase for large AC units, but that has been replaced with multiple units now.

  26. Ragavendran
    Jun 10, 2019

    Can call me back r share your contact

  27. Bob
    Feb 07, 2019

    Total and absolute fraud here. There are many dead giveaways. In addition to all the fiction written here, is the problem with grammar. This was written by someone with, at best, a tenuous grasp on the English language. BUT these type of people fleece folks every day.

    • Michael Lee Steib
      Apr 12, 2020

      Grammar problems do not necessarily imply fraud.

  28. james russell
    Nov 06, 2018

    You lot would be better off investing in LED lighting to save on power consumption and would also save you money in replacing lamps as they have a longer operational life span. Then after that you would be better off investing in solar panels and a good inverter or solar controller and battery and being off the grid.

  29. Mike Scirocco
    Sep 21, 2018

    What do you mean when you make this statement, “a power saver also removes any type of carbon in the system”. What is an example of carbon in a system? I don’t know what you’re referring to here.

    • SM
      Feb 01, 2019

      That is the statement/claim made by the power saver company, not the author

    • Kevin McGivern DS
      Jan 01, 2020

      I concur. First and foremost – how can something plugged into a socket “remove carbon from a system”? Better question: What carbon? This theory works for industrial buildings that run electric motors – it is called load correction. Any of these “power savers” are a bunch Horse puckey.

    • Rob
      Jul 10, 2020

      By using the sun power and wind power removes the carbon use.

  30. guruvaraja ganesan
    Aug 16, 2018

    I think the author academically studied the subject and not understood the real purpose of capacitor resistance circuit to assist in power factor correction and surge suppression.
    He used carbon in electrical parameter , where he studied such terms to explain electrical energy.
    Putting his unsolicited non technical inexperienced novice theory in first google search for power savers will mislead lot of people believing his academic degrees.
    Without proper experiments and proof he explain the thing.
    When P.F in a system is improved the system operates well and do real savings

    • Mike S.
      Sep 21, 2018

      What are your sources? Where are the numbrers?

    • Stephen
      Aug 03, 2019

      Again, as above, the claim about carbon removal was by the selling company, not the author.
      In his explanation on how the system actually works he does not mention carbon removal at all.
      A shorting circuit will, of course, carbonise the shorting and arcing points but these cannot be removed by improving circuit conditions, only prevented.
      Further, the author dies not state this system doesn’t work but states that as long as the system is in operation at, and only at, the same time as the capacitive and motorised loads and to only the extent required, then it will work very well, but the system doesn’t reduce the billing on power consumption for industry effectively enough to outweigh implementation costs EFFECTIVELY and to not affect household billing at all since households are not charged in the sane way as industry given that industrial machines are penalised as being the CAUSE of the “dirty signal” in mains electricity.
      I learned long ago from an electrical lecturer that in the UK in order to clean up the signal on power in the National Grid that one power station would have to be ENTIRELY sacrificed to the cause.
      This would improve the power so well that the overall consumption would be reduced by nearly a half.
      Imagine the loss ou’d income to the power companies and how much they’d have to increase cost per unit to make up profit margin.
      This would cause uproar even though the overall cost to the consumer would remain the same as they’d see the increase wasn’t due to cost but profit (although use of that sacrificial power station would translate to cost, the public wouldn’t see or care about that) and they’d be angry and possibly start rioting over it (people can be volatile over some such things).
      Thus the cost is put into industry and the status quo remains.
      If every house and industry fitted these power saving devices to clean up the signal and they incorporated an additional activation/deactivation circuit fur when ac unit or fridge/freezer motors and industrial motors and charger units and power tool transformers were active/inactive, then the power station sacrifice theory would be unnecessary, the signal would be clean, the power consumption would go down, all at cost to industry and households (who weren’t being directly charged in single additional surcharge form anyway, only through annual rise in unit price), the power companies would continue to raise prices and unit charges and not tell everyone that they (the public) were the ones cleaning the signal but that it was the actions of they (the power company) at their own cost and effort with rising prices on wages and materials and continue to raise surcharge anyway..
      Thus the effective way to manage this is to cut your own bills and surcharges where you can and not spend money where it will do you no good regardless of effort or cost..

    • Somya Vatsa
      Dec 10, 2019

      Well thank you for saving that, I have spent months doing it and analyzing data but this fraud here talks absolute nonsense without any backing for his nonsense. PF correction saves energy. Period.

  31. Marites canciller
    Jun 14, 2018

    I bought this electric saver 4 mo.s ago if i amnot mistaken at 1st mo. I think its work because my electric bill go down almost half of my regular bill but my 2nd mo. Of having this device, When i got my electric bill i found out that my bill go back as regular bill i ve recieved until now this devices still on the outlet where no one cant touch it ,but my electric become higher and higher than ever. Now the cost of my electric bill is 1200 pesos .wheni dont have this devise my bill only 800 pesos only 1 mo. This device makes me happy from 800 it become 400. And i bought this device here in your site at 2500 pesos . Can u pls explain to me what should i do to make me happy of this.thanks

    • Boi
      Sep 12, 2018

      RIP english

      • KillaBee
        Aug 25, 2019

        lol yep.

      • Suro
        Oct 17, 2019

        Abcd avenue
        India 700101

    • Jerome Robinson
      Feb 24, 2019

      Install led lighting and put timers on your water heaters so when not in use they would not kick in and reheat the cold water. This method should work fine.

    • A Justin Devavaram
      Aug 27, 2019

      If capacitor goes wrong it vil increases your EB bill sir this is my experience

    • Cid
      May 13, 2020

      Reply to Marites Canciller: I think perhaps you are a victim of a smooth-talking “snake oil” salesman, I regret to say!

  32. Ravi Gupta
    May 23, 2018

    Power factor correction actually reduces power consumption, because every load is linked to efficiency. If 80% is efficiency of device then 20% are losses. Loss is calculated as I2R. If current reduces, correspondingly the loss reduces which saves power.

    • Krishnan
      Aug 23, 2019

      When power factor correction is introduced into the system the voltage and current in the transmission line is in phase and the transmission loss is reduced giving advantage to electric company not to the subscriber. Since electricity being saved by reducing transmission losses amounts to electricity produced, such devices may be encouraged if it works to avoid national wastage.

    • Suro
      Oct 17, 2019

      Power factor correction is about reducing the reactive power which doesnt do any work in the literal sense.. as the knowledgeable author said adding capacitive load may be dangerous as a power system may suffer from certain instabilities like self excitation at the alternator. So static var compensation is deployed to control the amount of var pumped in the grid. Jignes bhai rightly stated that identify and switch off wasted power. You can control. If you want that auto regulated.. use motion sensors to switch off in empty rooms… PLC like logo or diy like Raspberry pi can be used to switch of timed devices. For airconditioners we should use a larger capacity single unit instead of multiple to cool a larger area… probably best to interconnect the rooms and have a single unit cool to a temperature setting and switch off.. inverter acs can be the best answer. For heating sun is the best source.

  33. Roger
    May 14, 2018

    None of these so called devices work, at all. I have just shut down the third site maintaining that they work, they do not. On a Flourescent light in a factory there are reasons to fit a capacitor. In easy terms the capacitor brings together the current and the voltage. This is required because the electricity supply companies charge a premium for poor power factor, the relation ship between how far the voltage and current are out of phase with each other. The reason being that if the current and voltage are out of step then the power company have to supply more electric than is indicated. This can even cause connection failures. In a house the difference is immaterial. However, on new electricity meters even that is covered. So none of these boxes are any good, As for claims of spikes etc, well the only real way to stop the parasitic spikes etc is to use a proper item for example a Uninteruptable power supply that is working through internal transformers. So, if anybody tries to sell you one you now that the so called power boxes are a scam. I have just caused another to be shut down, it was called Ecovolt from eastonia. Read Fraud.

  34. patel asha m
    Dec 16, 2017

    Thanks for information. I bought maxx environment power saver. In my home 1 freeze, 1 TV, 1 washing machine. Is it safe to use power saver or not? And it’s green light is off so thisthis device is working or not ? please suggest me that I can use it or not?

    • Ravi Gupta
      May 23, 2018

      There is no harm as we any connect our laptops, computers which have capacitive effect. So connecting a capacitive power saver will not harm. It will help in reduction of spikes.

    • Suro
      Oct 17, 2019

      It is wasteful .. as explained it is of no use.

    Dec 02, 2017

    As per Indian electricity act domestic consumers are to be billed on kwh basis hence reactivate power consumption should not be recorded by domestic energy meters but i am very much doubtful about energy meters provided by electric supply company, in my openion new electronic meters measure some reactivate power component also. I visited several single phase meter testing labs of power supply company and requested them to give demo for testing the meter at different power factors but equipments such as phase shifter RSS meter etc were out of order. And it is told to me by several responsible people that energy saver really reduced their bill up to
    some noticeable amount.This thing also support my claim that energy metere do count reactivate power. Now i will purchase one and see
    what difference it makes.

  36. sun
    Oct 13, 2016

    only power saver 3 phases with a kvar capacitor and controller Power factor, c/k and more can true save, depends the inductives load. if good for hotels or place use for sample many air conditioner. here can get good result saving.

    for product picture you show yes many power saver , and aslo every power saver with a socket plug is are scam, and you can see china is number one place for scam power saver , same recently shenzhen jumbo power saver , product dont save only $1 and more him increase your bill electric .

    i use another factory form Taiwan use a true power saver 3 phases and i know 90% is are scam power saver, my for every customers i install power saver. i try with a meter 3 hours without power saver and 3 hours with power saver and compare kw/h with a meter same model form company electric.

    so here can see true power saver and scam power saver.

    we not recommended buy power saver from shenzhen jumbo power saver is are 100% scam
    Also noted Alibaba aliexpress made in china protect gold suppliers because every year gold suppliers paid $6000 to $7000 for show product to is website, problem bad verification form alibaba aliexpress i show to 1 video to youtube is are bad veryfication you can see to the disclainer alibaba the company promose. just promise for get gold supplier status and scam to international.

    you can see the video here before you want to risk buy form b2b alibaba SCAM

    King regards

    metas :
    shenzhen jumbo power saver scam
    Alibaba the hive of gold suppliers SCam

    • Whitman Qin
      Nov 08, 2016

      To all who may see it:

      The report from Mr.Sun on Oct.13.2016 isn’t correct and he doesn’t respect the truth.

      As he said that only Kvar capacitor with PF controller can save. I don’t think that he knows much about the real saving technology.

      If as he said, Jumbo power saver is scam. Then how to prove that his words is true ? Jumbo saver is PF correction device with Kvar capacitors and we have lots of saving examples to show customers. How can Mr.Sun that there is saving by other Kvar savers while there is no saving by Jumbo? If he really know about this tech, then he shouldn’t say it like this.

      In fact, His aim isn’t helping buyers to make right decision. His aim here is going to use blacklist to say Jumbo bad words. He wanted Jumbo to die and this is his destination.

      Mr. Sun,our former customer who doesn’t respect the business rules and he is not honest person.

      I swear in the name of the God here, Jumbo didn’t cheat Mr.Sun. Dare Mr.Sun swear in the name of God that he is really honest on this matter ?

      We lost business due to his bad behavior and we have all proof to show what kind of of Person he is. He is using all blacklist and links to show Jumbo bad words as revenge.

      If any customer want to know the truth, you are welcome to contact. [email protected] for more info.

      If any supplier see this information, I don’t suggest you to do business with Mr.Sun.

      If you really want to be headache, just try to do business with him. I do believe that he got lots of bad buying history in China. And you will be 100% unhappy.

      Even Alibaba has no words about him. He said that alibaba is scam and didn’t protect his benefit. In fact, for the whole process, alibaba is protecting the benefit of customers. We have all proof to show it.However, during the communication with alibaba, his attitude and words didn’t stand right,so,he failed. And now he can only say bad words about Jumbo as revenge.

      He retuned the goods and we refunded him 100% money. Still now he tell fake story online that he lost 1220USD.

      I want all to ssay,if you buy some products from China and you damaged the products during wrong operation and wrong installation, then you ask the supplier to refund. Will the supplier do it ? Maybe 99% won’t.

      However, we respect the benefit of others and we refunded all. And we don’t want to be headache with Mr.Sun. However, Mr.Sun still say online that he lost 1220USd and even ask me to give free H20 saver for compensation and also he ask Jumbo to give him shipping cost from Cambodia to China. Is it fair ?

      He said that Jumbo has defect on the products. Yes,Jumbo isn’t 100% perfect and we still have a long way to improve the quality and everything and now we are doing that to make ourself better and better.Besides, I have the confident to say that we are the best power saver manufacturer in China. Maybe customers don’t believe what I say, then you are welcome to compare any other brand from China with Jumbo and tell us the disadvantages. Most welcome.

      We work with customers honestly, not like Mr.Sun, can only say bad words and use knife on the back. This kind of person I dare to say, if he didn’t get brain problem, then must be a person without good temper and personality. If he is good person, then he will not use blacklist to say words which isn’t true. His negative can’t help any customer , only the best way for him to revenge for his so called lost. You will see may fake reports from many webs when you search Jumbo power saver. All are from Mr.Sun or Mr.Tee Sama. Maybe they are same person.

      I would like to make this information open, for the reason that Jumbo never worry about bad words from customers. But we respect the customers who give us real advices. If the person who like Mr.Sun, in the aim for revenge only. Then,we have enough confidence to say big NO.

      Thanks for your attention and best wishes to all who may see.

      Jumbo Team

      • Prakash Bhatt
        Sep 10, 2019

        Good answer sir,no one has rights to negative marketing against any company or products,we also work in same line as an Electrical Engineer i like to say that % of Power savers are depending upon power quality given by EB company,and its veries as per service provider.

        Please share your product details i m intrested to do business with you.

        Prakash Bhatt

      • Ms Moon
        Jan 20, 2020

        You speak too much about Mr Sun and not enough about your product and proof of concept that it works, as well as explaining how.
        I believe your comments here are nothing more than a smear campaign of Mr Sun for expression of his opinions only.
        If he caused your company damages, sue him for your loss. If your product lost sales due to his words, prove it.
        The sales of “Jumbo” should speak for itself through the ratings of others who bought and are using the product. Every product speaks for itself. If it’s an amazing product, your sales should not have been bothered by the bad opinion of what ONE customer says, it should be reflected in your profits from the consumers who bought and believe in your products.
        All you did here was try to discredit Mr Sun because his words and due to your business dealings not working out. You resolved your issues with him, move on.
        Bashing an unhappy customer who has opinions about your business or it’s practices is not something a professional representative of a thriving company would do.
        Those claims of business loss would be handled by your attorney in a law suit, NOT babbling on the internet where people are trying to find out REAL REPUTABLE information to make informed decisions.
        Your words reflect badly on your company and it’s reputation. Basically a waste of space.
        With that being said, I wish you luck in your future endeavors of your business and your products.

        • Gary Lee Ash
          May 04, 2020

          Well said! Spot on in your assessment!

  37. Oskar Ohakas
    May 06, 2016

    “The systems also automatically remove carbon from the circuit which also encourages a smoother electrical flow.”
    This statement – to remove CARBON from the CIRCUIT – is misleading. No electrical engineer, textbook etc do not use word CARBON in such semantic mood. At least I am not able to find out such slang usage (to remove carbon from electrical circuits) inside electrical engineer community or any other inner circle.

    This error is circumstantial evidence that mr. Jignesh Parmar is not 100% competent in the field.

  38. Lance
    Feb 16, 2016

    Hi there, while true, at the same time using a high quality power meter, I noted a 15 Watt savings on a 70 Watt florescent light fitting. It was running at 100 Watt there was no cap across the supply so I added one and it dropped by 15 Watt. There was an instant savings and this is the way to do it. A cap on the far end of an unloaded line can cause the voltage to increase and is considered dangerous. Also just adding capacitors can result in harmonic amplification of the voltage, increased voltage distortion. Ask any car audio nut, they know that often adding a supply cap can make more noise or hum in the audio rather than removing the noise, a result of a greater voltage drop across the supply lines. You can always save energy by reducing the resistance of the supply cable. We all accept a 5% volt drop on a supply cable but fail to remember that it implies a 5% power loss!

  39. vievk
    Nov 24, 2015

    Sir, I have two ac , one geaser my bill is 12000/-pm , how can I reduce it.

    Thanks Vivek

    • Prakash Bhatt
      Sep 10, 2019

      we The “SIGMA” leading company in Power savers and Active or Reactive Harmonic filtration devices , we have proven that in BVQI,ERDA nad CPRI also they certified us there are 17-36% savings it can do in industrial as well as domestic loads,

      please connect our sales Team they definitely help u.

  40. Hoq
    Sep 02, 2015

    The so called “Power saver” found in the market for house hold use is 100% fraud . Pls read the article in the following link :

  41. Suraj M
    Aug 31, 2015

    I have saimax 3G power saver. When I used it first time all 3 LED indication were ON. But suddenly last green LED started to fluctuate and after a while it goes OFF. So please let me know if the saver is working or not. And what is the meaning of the 3 LED lights.

  42. mahir
    Jul 09, 2015

    I am needed so much

  43. 3liswaid
    Jun 15, 2015

    thank you for this article it’s very helpful ,
    in my country salers sells this device about 50$ and the device is written over it 100 A and 300,000 watt
    they fool people ,,
    thank you

  44. Glen
    May 01, 2015

    E$aver 1200 works at my home and office, saving me over 30% and for all of my clients including big billers saving between 21-36%

    • Glen
      May 10, 2015

      I read quite a bit on your discourse on PFC and electricity saving, stating that such is negligible for residential lines, well I am no engineer/scientist, but simply a user of two Electricity Saving devices and my experience runs contrary to your comments.

      My success led me to become a dealer of the same equipments saving multiple supermarkets several thousand dollars monthly (3 Phase), a single phase user over $1400 in 3 months and several other single phase clients 3 digits savings of at least 20.09% monthly!

      • emmanuel mallari
        Jul 17, 2015

        i did have one at home and i saved 25 to 35% on my monthly bill. the electric company could not believe it so they took my meter away and replace it with new one. when we inquired why, they simply said they will send it to factory to check as there seems to be a problem with my reduce electric usage. until now i am using it with success.

        • sima
          Nov 13, 2015

          could u please let me know what kind of power saver u used
          ill be grateful for ur help

          • Vaidya
            Nov 26, 2019

            I am using one from Sai Energy Saver from India, Surat.

      May 28, 2015

      I read your comments. but I want to know if power saver really reduces our electrical utility bills?, If yes then where can I get it in India?

    • ru ko
      Jan 18, 2017

      Glen, you are either not telling the truth or you have been hoodwinked. These devices are worthless for the average home owner.

  45. ed
    Mar 14, 2015

    Fixed capacitance type PFC only works when it is of right capacitance value to a given motor load. Since the household has different motor loads and switched at different times, this may not work all the time. For household, automatic power factor correction should be the way to go.

    Any reduction in current will reduce the speed at which the disc on the meter rotates, hence reducing the monthly readings. More info right here

  46. Stephane Bois
    Mar 09, 2015

    Thanks for the information. It did bring long forgotten concept of my automation and control course….It was a nice review! People will more end more dream of saving as price of energy rise up!

  47. Arthur
    Feb 26, 2015

    I have 2-50 Amp power saver 1200, 1 at my home and the other in my office. I installed them in Nov 2014. For November my bill fell from $112.00 Average to below $78, the next bill was under $86 and my last bill ie for Jan 2015 is $68.25, so for me, my US made Power saver saves over 30%.

    Re: my office in Nov I paid $57.43, Dec $38.17 and Jan $29.88. In Dec I saved 34% and in Jan 48% or an additional 22%. so maybe, you need to by your from the USA!

    • Arthur
      Feb 26, 2015

      I have 2-50 Amp power saver 1200, 1 at my home and the other in my office. I installed them in Nov 2014. For November my bill fell from $112.00 Average to below $78, the next bill was under $86 and my last bill ie for Jan 2015 is $68.25, so for me, my US made Power saver saves over 30%.

      Re: my office in Nov I paid $57.43, Dec $38.17 and Jan $29.88. In Dec I saved 34% and in Jan 48% or an additional 22%. so maybe, you need to buy yours from the USA!

      • shalam
        Mar 02, 2015

        Can u please tell what is the brand of your power saver.
        Thank you

        • Glen
          May 09, 2015

          Esaver 1200

      • Tracy
        Jul 21, 2020

        Arthur, what brand?

  48. henry
    Jan 31, 2015


    You write: “The systems also automatically remove carbon from the circuit”

    Remove carbon, the element ‘C’ (atomic number 6), is that what you say? I have never seen any instrument removing ‘carbon’ or anything tangible from an electric circuit. Electric energy is converted in other types of energy, yes, but carbon?

    So what do you mean?

    • asg
      Feb 07, 2015

      He meant it in a descriptive sense, carbon build up in an exhaust creates poor flow, he used it as similarity to an electrical network flow.

    • AndyChow
      May 10, 2015

      The guy doesn’t know what he’s talking about. Engineer my b—. These power saving devices don’t work, it’s just a scam. It doesn’t remove carbon (which has nothing to do with electricity), it doesn’t do anything.

  49. Lotus
    Jan 14, 2015

    Dear Mr. Parmar,

    I just find your article very useful. You have given a perfect explanation of the power saver use for domestic consumer. But I want to ask you a question about my situation. First of all, I give you a little introduction of the problem. I have on the roof of my house a solar plant for domestic production of energy. In the max period of production – in summer – in the most productive hours of the day – i.e. from 12:00 a.m. to 02:00 p.m. – the inverter of solar plant goes down in error for security because it overcomes the limit voltage permitted for the immissions of energy into the distribution line. The limit is reached because my house is at the end of household distribution line and the cables have a less diameter because very old. In every case, the household told me that from their measurements the parameters all right. Anyway the problem persist: the distribution line couldn’t take all the energy produced.
    The question is: could the use of a power saver reduce the problem? Theoretically, it modulates the energy signal like a filter, so the energy that will be inmitted into the elettric line would be all taken. What do you think about that?

  50. Tony
    Jan 13, 2015

    Hello, I purchased energy saving devices from a small manufacturer. They actually said I needed two to cover my entire home. One to be plugged in for the odd numbered circuits and one to be plugged in on the even numbered circuits (in the breaker box). I did experience a savings of about 7 or 8 % on average on my electric bill. However, I also seemed to experience some problems with my electricity, such as furnace blower refusing to run properly, refrigerator problems, etc. so I am wondering if the stored power can cause problems. I no longer use the devices.

  51. Mr. Indrajit Desai
    Jan 01, 2015

    Article is nice and helpful.

  52. sunil pawar
    Dec 16, 2014

    is there any power saver gadget/device which would really reduce watts after installation for domestic/residential &commercial consumers and also reduces electro magnetic interference,radio frequency interference as per Indian standards?I will be thankful to you if you guide me with your valuable advice. please send me your contact details of jignesh parmar sir

  53. anwaar
    Nov 14, 2014

    Thanx dear for nice explanation. but how could they fool people at large scale. I would appreciate comments from a user of this product

  54. anwaar
    Nov 14, 2014

    thanx dear for explanation. but the question remains , how could they fool public at large scale?

  55. Roberto
    Nov 13, 2014

    Thanks for the explanation, clearly is s hoax

  56. sudhir shinge
    Nov 05, 2014

    Empower saver Prix liest. Maharashtra. cod.416122. India.

  57. Mahinda
    Nov 04, 2014

    Thanks al lot for your explanation

  58. Dmitri
    Oct 02, 2014

    Thank you for the self explanatory article. Saved my money just now by not buying it.
    Better off invest in uprating household size of the wire from #14 to #10
    Save some money on decreasing resistance of the wires, in 10 years will get mine 3-5% of energy bill back (after paying for the new wires) it is better then saving less then 1% with this useless device.
    Thanks again.

  59. Ravinder Aggarwal
    Sep 21, 2014

    Currently using plug in device made by la-costa . seems ineffective. please call me on 09810075222. Best Regards R.Aggarwal

  60. senthil kumar
    Aug 07, 2014

    Thanks.. after reading this i saved my money which i planned to buy ps.

  61. Fazal
    Jul 07, 2014

    It is indeed a very informative article. I am thankful to the author for this valuable knowledge.

  62. maria
    Jun 05, 2014

    Thank you very much for this article. It helped me make the decision not to purchase an energy saver.

  63. anil
    Jun 03, 2014

    Nice explanation and educative.
    Can someone please let me know among lot of manufacturers in India, which one is good and reliable and if i can buy the product online?

  64. A. N Sharif
    May 07, 2014

    Very nice of you & your products.
    I am interested for the product of household power saver.
    I am Bangladeshi.

    Thanking you

  65. sps
    Apr 23, 2014

    What is the size of capacitor should be used for 1HP motor, 2HP motor and 500W refrigerator for power saver purpose? For 230V 50Hz grid. Thanks in advanced.

  66. srinivasan
    Apr 10, 2014

    Appreciate this article .We require 3 Phase Energy Savers.The products should reduce reactive inductance and increase the power factor. electronic product is preferred.

    is there any product like this if so what could be the ideal savings and approx cost

  67. Juhn 3:16
    Apr 03, 2014

    Most of those selling household type energy saving devices that plug into an outlet ask the consumer to wait a few months to observe their “savings” and base it on the actual bill. In reality, if the device can really save on electricity consumption, it can be instantaneously measured by using a standard watt or kilowatt meter. The kilowatt-hour is just a measure of consumption after one hour. Some use a clamp on ammeter to prove the energy savings. What they were showing is volt-amperes not watts which is volt-ampere multiplied by the power factor. The consumer pays for the watt-hour (or kilowat-hour), not volt-ampere-hour. Perhaps the scammer is banking that by probability half of the buyers will experience some reduction in billing although half will experience an increase in their bill, although the gadget does not have anything to do with the reduction/increase in billing. Perhaps the tariff got lower of there are fewer days in a period covered. Anyway the one half of the consumers who found their bill reduced will be happy and attribute the reduction to the “energy-saving” gadget. The other half may just keep quiet or be shy in filing a complaint.

  68. Gilles Moniot
    Apr 01, 2014

    Excellent article.
    C’est bien expliqué et on comprend que les arguments de vente des fabricants sont une arnaque puisque la facture d’électricité en résidentiel est basée sur les kWatt. Peu importe le facteur de puissance que nous avons à la maison.
    Merci pour vos explications.

  69. nit
    Mar 23, 2014

    hello mr. jigu parmar. I like your article. and I am agree with you. but I had seen and observed in 3 phase load system, that if I connect a 3 phase capacitor across the load then current goes down. But I also observed that unit consumption of load (kwh) per day also reduced.
    I just need to know ., why did it happen.?
    please reply me on my mail id
    [email protected]

  70. Stephen
    Mar 12, 2014

    Nice article, very informative.

  71. Key
    Jan 29, 2014

    These articles would be a lot nicer if you followed standard scientific writing practice and provided an abstract summarizing all your findings at the beginning of the article. Otherwise it was interesting.

  72. amritlal
    Jan 20, 2013

    the capacitor for reactive compensation comes with price . more time you expose these capacitors to grid system, more is the chance of capacitor dying. And if we consider a harmonic distortion in supply , the capacitor life drastically comes down as the capacitor draws more current than its intended. i still feel this power saving should be prevented being sold unless it is tested and the values are tabulated and the performance is tested for at least a year.

  73. JV_ROMAN31
    May 21, 2012

    Does capacitors affect the operation of a disc type watt hour meter? I have seen some demonstrations wherein the rotation of the disc slows down everytime the device is turned on.

    • Marcel
      Jul 23, 2015

      What can of bull is that I would need proof of anything would work at all to bring electricity bill. Down35% or45% saving give me a free sample of proof please my. Address 342 bonavista st Rockland. K4k1n7 prove me rong if

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