Joseph Lofthouse wrote:
Creighton Samuiels wrote:I haven't run the numbers, but I would strongly suspect that photovoltic panels have dropped enough in price that it now makes sense to use extra panels to electrically heat water,
Solar electric panels are about 20% or less efficient at converting sunlight to electricity.
Solar thermal panels are about 80% efficient at converting sunlight to heat.
It would be really hard for the solar electric panels to compete in any application that was generating heat.
Pearl Sutton wrote:
One of the things I want is DIY installation, any idea if this is something I can do? I hate dealing with insatiably techs, they tend to piss me off...
Creighton Samuiels wrote:
Peter VanDerWal wrote:
You don't need a huge array if your house is efficient.
Granted, but living in Arizona probably helps in that regard.
Mick Fisch wrote:making corn into ethanol is also a bad use of land. When they started doing it all the food prices took a pretty hefty jump as I recall. You just can't get enough alcohol out of an acre of corn to be worth it. If later, we can get the conversion rate improved a 1000% or so, then maybe.