Alternative Energy: Get 1500 Watts Of AC From Solar



Interested in alternative energy resources? Our electricity expert Robert Brenner will explain how you are able to get 1500 watts of AC power.

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Alternative Energy Solutions | Emergency Power Backup

(Based on the book: Power Out! How to Prepare for and Survive a Grid Collapse by Robert Brenner)

Generating Power

A newspaper article described a local homeowner who uses a “trial model ” of those Tesla Powerwall in his house for battery powered backup energy if the grid goes down. My attention piqued –he explained his Powerwall might be utilized to charge cell phones and run his fridge.

In essence, the Tesla battery charge can “keep lights and the kitchen for several hours. ” As an engineer, if I see or read about inventions like this, I immediately wonder just how much power it actually creates, just how many amps it could provide and for a long time?

I don’t want an additional iPhone or iPad charging channel. Until the power comes back up, I wish to keep my food cold and my fridge running.

So I began digging. The Tesla Powerwall supplies 10 kWh for backup or 7 kWh for cycling that is everyday.

The Tesla Company claims 2,000 watts can be generated by the battery charge constantly and 3,300 g for peak use.

About 30 kWh daily is consumed by the house. At a Powerwall release rate of 2 kW each hour, a 7kWh battery pushing an inverter will create AC to this house to get under 4 hours until the battery has been drained.

This could possibly be acceptable at night whenever there are no other energy resources. It’ll provide you some AC to function at minimum load, but the conversion efficacy of 0.94 through the discharge and charge cycles leaves me with more questions than answers.

Powerwall Cost


An 7 kWh Powerwall will put you back around $7,000–the advertised cost of $3,000 didn’t include permits and installation.

How long will one of these keep the furnace or refrigerator running and the lights on? What can or cannot be worked?

It seems the Powerwall is charging ten activates when power is dropped to power an whole house for a couple of hours. Subsequently the battery in the Powerwall must be recharged to 7 kWh–now using a 4 plug (1.6 kW) charger.

This will take 5 hours supposing local power was restored.

An option is to utilize a petrol generator that is $500 but the sound might be unacceptable. Many homeowners in Louisiana have had thieves sneak from early in the afternoon using a running gas lawn mower, set it alongside their generator, then turn off the generator leaving the mower sound while they steal away together using all the homeowner’s emergency power source.

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Advanced Solar Power Inverter


This article implies that solar power won’when grid power goes out t work. This is correct.

After the Fukushima magnitude 9 earthquake, both 49-foot tsunami, and meltdown at a large nuclear power plant, most people in that country without power are requiring the Japanese authorities to get the electricity.

Many possess solar systems consequently an inverter producer in Japan has the ability to sell an inverter. The inverter comes with a power attribute that converts solar DC into grid-quality AC.

For decades, Sunny Boy (SMA) was trying to have U.S. government and utility bureaucrats to allow them to offer a solar-to-AC backup system they had already designed.

Based on the precedence set by Japan, the U.S. stopped stonewalling SMA and now thousands of houses are getting solar using a TL inverter that provides a socket for 1500 watts (12.3 amps) of AC directly in the solar panel.

Homeowners using existing photovoltaic solar are currently investing about $2,400 to replace their own inverters using an SMA TL stable power product. They need that energy reduction insurance.

Photovoltaic Definition: The conversion of solar energy from an array of cells into current.

If the grid goes down to a sunny day? Switch to secure power and get around 1500 W (12.3 amps) that will quickly drive a 700W 6 china fridge to keep the beverages and deli meat chilly.

Turn the fridge temp up unplug the unit and then plug it. After that, gradually rotate the temp setting down to a preferred temperature.

You shouldn’t possess a surge difficulty, and your fridge should continue to hum.

Watch this movie from ColdFustion about how the Tesla Powerwall functions:

Now imagine what you could use a 7.4 kW solar system comprised of 2 arrays and 2 identical inverters. Utilizing two SMA TL inverters may provide you 3,000 watts of power protection as long as the sun beams over the panels.

Oh, bright days!

Backup power solutions are on the market, and the cost of ownership continues to reduce. What a fantastic time to be living and enjoy technology.

What should you consider this emergency backup power technology? Share your ideas together in the comments section below!


Solar Power: Energy Alternative
ALTERNATIVE ENERGY: Power Plants… Literally?
A New Take On Alternative Energy: The Tesla Powerwall

Editor’s Note: This article was originally released on September 15, 2015, and has been updated for relevancy and quality.

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