Re: $2/kwh is a lot of money
I'm not sure I understand how your payback can be so slow..
I've just had a solar array installed. With a 9.2kWh lithium ferrite battery and a 4.2kW peak capacity solar array, I'm expecting break even to be somewhere between 9 and 9.5 years, although the coming price hike in october will probably reduce the payback time.
Without the extra expense of the battery, which doubles the cost, the payback period was going to be between 11 and 12 years. Without a battery, the payback takes longer despite the fact you've spent less because instead of using all the electiricty generated, you end up selling electricity to the grid, and then at night paying between 4 and 7 times as much as you were paid tper kWh o buy electricity when you need it.
Biting the hand that feeds IT
