How It Works

The STEMS unit blocks the transient power surges that come down the electrical line from the electrical source. These transient power surges shorten the service life of all electrical equipment. Light bulbs burn out more often, motors on refrigerators’, freezers, furnace blower motors, ceiling fans, washers, dryers to name a few may fail prematurely. Audio and video equipment will have shorter life as transient power surges come thru the electrical system and destroy the electrical components.

One of the components in the STEMS unit takes these transient power surges to electrical systems ground, therefore blocking the surges from entering the electrical system (breaker panel) the STEMS unit is attached to.

The energy saving portion of the STEMS unit comes from the high end capacitors within the STEMS unit. Capacitors reduce the AMP need for the motors in the electrical system. To understand how this works we must first understand the basics of how an electric meter works. Electrical systems in the USA are a 60 hertz system. That means AC (alternating current) electricity goes back and forth on the electric wire 60 times per second. An electric meter records the amount of electricity that is delivered, but only charges for what is used. That is where the back and forth motion works in the AC electrical system.

For instance 100 AMPs are delivered to the electrical system and only 20 Amps are used. The electric meter only charges for the 20 AMPS used. The STEMS unit will reduce the AMPS that the electric meter charges for, therefore putting more electricity back onto the electrical grid. However electric bills don’t show AMPS used, they charge for kilowatts (KW) used.

Remember a KW of usage is that moment in time. KW’s are added up second by second to have a sum total at the end of an hour, thus the kilowatt hour (KWH).

To determine a KW the formula is volts x amps / 1000 = KW. For instance an electrical system is 240 volts using 20 amps at this second of time / 1000 = 4.8 KW’s / 60 seconds = .080 KWH at that second in time. The next second the electrical system uses 27 amps which means 240 volts x 27 amps / 1000 = 6.48 KW’s / 60seconds = .108 KWH, and so on. At the end of an hour all the .080 + .108’s are totaled to give that KWH of usage for 1 hour. This goes on 24 hours per day 7 days per week. At the end of the electrical billing cycle all the 1 hour KWH’s are totaled to give what the electrical system has used for the billing cycle.

When the STEMS unit reduces the AMP need to the electrical system the KWH reduces at the end of the billing cycle. That is how the STEMS unit works.