For the Math Gurus

[acdii]

If you were to build a solar charging station, that had a 48v to 240v 10000 watt inverter, deep cycle AGM batteries to supply one and half charges per solar cycle and panels to charge with, for say $11,500 initial cost(guestimate), what would the pay off be to free energy for charging the Energi?

 

Base it off national average cost per KW.

[Griswald]

I was told there would be no math...

[murphy]

1.5 charges for an Energi battery requires about 10.5 kWh.

The most the car can handle is 3.8 kW so you don't need a 10 kW inverter.

My cost for electricity is about $0.007 per kWh. For the math challenged that's 0.7 cents per kWh.

[lolder]

I think 22 years at $0.15/kwh electric cost for 10 kwh/day assuming no AGM replacement or other maintenance. Not worth it.

[Texasota]

Recently read this article concerning this topic:

 

http://finance.yahoo.com/news/electric-car-drivers-trading-gas-solar-power-143132977.html

[tr7driver]

I'm on a variable rate power schedule, so I charge from midnight to 6 am at less than $0.03/kWh. I don't see any payback on adding solar to my home. If I charge during the day in the summer, I may be paying $0.15/KWh, but I charge for free during the day at work. I have 830 miles on my C-Max energi, and I have never put gas in it. It still has half of the tank from the dealer fill-up, and I burned most of that in my 170 mile drive home from the dealer.

[acdii]

I based the inverter on the amp rating of the 240V charger. I have a small setup like this in my RC trailer, a larger deep cycle connected to a 2500 watt inverter with a solar panel. Cost just under $300 but gives me 12v and 120v to run my tools, chargers, and lights when at the airfield.