Yes… you have a 12kW array… his proposal has him getting a 2.5kW array… it produces a MAXIMUM of 14.4kWh.I have a 12kw array and it will produce 80kwh a day currently on perfectly sunny days. I know location and time of year etc will change that but it is producing way over any estimate I've ever got. It's also clipping my inverter during the day for about 2-3 hours after my batteries are charged so there is even more potential there, just don't have the inverter power to use it.
Grrr! Just when I think I understand what they are trying to sell me....Yes… you have a 12kW array… his proposal has him getting a 2.5kW array… it produces a MAXIMUM of 14.4kWh.
No where close to what you have.
By multiplying 2.8kW x effective number of (100% max) sun hours in a day.
For my San Jose, CA location, this calculator shows 2.14 hours effective sun in December, 7.82 hours in June.
Solar Irradiance Calculator
www.solarelectricityhandbook.com
2.14 x 2.8kW = 6.0 kWh
7.82 x 2.8kW = 21.9 kWh
I wouldn't worry about it. Not until you give it a(n actual) try and work out
a) How much power you're actually going to need and
b) How to go about cleverly reducing the need :·)
As I said, you heat with wood *. Very good starting point.
If you cook and heat water with gas, use LED lights, and so on, a 3kW array and some 15kW of batteries could be plenty.
* Joel Garreau's excellent book, The Nine Nations of North America (1981) puts Nova Scotia (culturally) in New England :·)
The symbol for which is... a wood stove.
Obviously, just looking at the cover will give you the general idea (quite clever, hey :·) but it's quite well written and worth reading.
So if I double the panels, I double the possible kWh?