The SUN DA095-A 95 watt amorphous module comes from one of the leading science and technology companies in the world. Call me for information. I can’t publish it.\n\nIf you spend $300/mo. on electric Kwh alone (about a $400/mo. total bill) and you pay 7¢/Kwh you will need 355 of these modules (35,000 watts) and 4,500 Sq. ft. of space (roof or ground). The cost will be $26,980 and the payback will be 7 years for the modules only. You will need an inverter, mounting racks, charge controllers and batteries, etc. All that could add another 40% and then there is the installation for at least a dollar a watt or another $35,000. Now the cost is $72,000 and the payback is 20 years. Yeah, yeah, yeah I forgot inflation, the rising cost of electricity, etc.\n
Solar Incentives in your States
\nIf you have any incentives in your state www.dsireusa.com the cost and payback of just the modules, 7 years, could be half that, just 3.5 years, but incentives are running out. This is a very half ass attempt to calculate payback but at least its understandable, I think, for about anyone. Unfortunately it points to the need to get the cost of solar down to about 50¢/watt. The vast majority of the issues with the cost of solar is the amount of Kwhrs it takes to run our current air conditioners, lighting, refrigerators and freezers, water heaters, etc. If we could use this energy more efficiently and less often it could make a world of difference but…\n\nNow I will turn off the Christmas tree lights that have been on all day and night, a half dozen lights that have been on all night ( couple all day), my computer, oh yeah and the idiot box, all day and night as well.\n
\nYou know when I started this I thought the $1.20/watt modules above with the 30% tax credit, hence 80¢/watt, would make some great numbers appear. I know my simplistic calculations would make allot of people cringe. But apparently, unless you are off grid, especially with the Federal tax credit, which does not restrict non UL modules and do it yourself installations, off-the-grid solar is for real because running a generator costs about 40¢/Kwh. or 6 times the cost of the average Kwhr from a U.S. Utiltiy Co.\n\nStill allot of off grid people have put off solar, even for off grid, because of the up front cost, but that cost is likely to come down because of: oversupply of modules, inverters, solar batteries, etc. in the grid connect market (this may happen sooner than you might think). We will sell anyone a solar system regardless of whose paying for it but there is no secret that we enjoy the off grid market sales the most. The installations, locations, and especially the people who install and own them are fascinating. Most importantly, they are for real.\n\nMaybe if you live in some place where the peak hourly rate for electricity is like 28¢/Kwh or 4 times the national average then with all the available incentives the payback would be 5 or maybe 3 years, then it sounds very good. There is such a place, parts of Los Angeles. There might be more.