I requested a new quote from them this month, and it's so much more in reach. The proposal they gave us has the south facing roof covered in 19 300W panels, although more could fit on the flat peak. This would be more likely to get by the preservationists. I've attached the documents comparing the two estimates, but here are the key points. (These numbers are for the smaller array, but the size could increase which would improve the numbers even more.)
- Since 2011, the cost per watt on similarly capable panels (19% efficient) has dropped almost in half
- subsidies have dropped from $1.75 per watt to $0.80 - and dropping
- despite the subsidy drop the net cost to us has dropped from ~$12k to ~$5k
- even with Basra using 2150W for heating in his 7 month wintering, we can cover 40% of our electric use. Without his environmental disaster, I have to image it'd be closer to 70-80%
- the return on investment, even on a smaller 5kW array has dropped to 6 years, from 9-11 years
- the 25 year savings (length of the panel warranty) would total ~$30k
We haven't decided for sure if we are doing it yet but the estimate alone gives me a huge nerd boner. It's crazy how quickly affordable renewable energy is becoming, even in a a cloudy place like Buffalo. Imagine a distributed grid powering Buffalo throughout the day and the Falls powering us at night. No one would ever have to breath in the disgusting Huntley coal fumes again.
Very. Cool. or should I say. Very. Warm!
I say we should go for it because it will only raise the value of the house.