[Oeva-list] OT: Real or Scam? Electricity Saver

Tim Kutscha tim_kutscha at yahoo.com
Tue Jul 15 12:31:05 PDT 2008

Hi Patrick,

It looks like this device does "power factor correction" (PFC) for inductive loads.  See the following:


As far as your electric bill, I believe the power company charges large customers like industry based on their power factor (PF), especially if it is less than 1.  For residential (home) customers, I've read that the power company doesn't care about PFC and charges people the same, whether their load is power factor corrected or not.  I'm guessing the electric meters used to measure the power factor are more expensive.

Because many battery chargers for EVs are switching power supplies, they should have power factor correction to maximize the current they can pull from the wall.  I think this is why the chargers from Manzanita Micro are called PFC-20/30/etc...


----- Original Message ----
From: "patrick0101 at gmail.com" <patrick0101 at gmail.com>
To: oeva <oeva-list at oeva.org>
Sent: Tuesday, July 15, 2008 11:31:20 AM
Subject: [Oeva-list] OT: Real or Scam? Electricity Saver

Have any of you seen or used something like this?  Do you know if it works as advertised. I could not find it on snopes. 


From their FAQ

How Does the Power-Save Unit Work?
The Power-Save reduces the amount of power drawn from the utility by storing (in its capacitors) otherwise lost electricity (watts) caused by the inductive motors in your home. (Some examples of inductive motors are Air Conditioning units, refrigerators, freezers, washers, dryers, dishwashers, pool pumps, vacuum cleaners, furnace blower motors, fans etc.) The technology applied by the Power-Save 1200™ Unit supplies that stored electricity back to your inductive loads, thus causing you to decrease your demand from the utility. If you decrease your demand from the utility, your meter slows down, and you use less electricity. The thought is, you've already paid for that electricity, why pay for it and waste it when you can pay for it, store it, and reuse it again. This whole process is called power factor optimization.

Sunlight will never cost $4/gallon 

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