by DavidSGordon » 27 Jan 2011, 14:08
I'm in the California Foothills and the island of Mindanao... I have both solar panels (electric and water heating) and a single wind-generator since 2000. We actually sell power to PG&E in California and are self-sufficient in Mindanao.
NOW, I'm confused with YOUR math... you say the Rep. suggests a monthly savings of $35 (25% of $140) which would be $420 / year. If materials / installation are $18,000 less $2000 tax-credit: it would take 35 years to pay off $16,000 at $420 / year.
980 Kwh/ mo is some pretty heavy usage... I'd suggest trying to reduce that. CFT's, lowering your AC setting, no lights if NOT in room, un-plugging "stand-by" appliances, and upgrading insulation.
At our 2000 sq ft California RANCH we only burn 400 Kwh per month, and that includes an 800 sq ft barn (admittedly we heat with a wood-stove). We have 15, Sanyo 200 watt panels (3kw total) and generate an avg 900 kwh / month. SO, we're selling BACK almost 500 kwh mo. to the "grid" on the photo-cells alone. The 1kw wind generator averages another 20 kwh / month.
I THINK the company YOU are working with is selling the EXCESS electrical-power back to the power-company behind your back !!
GOOD LUCK