[BobL]

“...At best, solar panels can be purchased at $4-5 per watt, IIRC.”

Not anymore. With the federal rebate, you can get grid-tie systems installed for around $2.00 per watt. Obviously systems that can take batteries cost more...and then the batteries themselves even more.

http://www.wholesalesolar.com/gridtie.html

[Donald Rumsfeld Fan]

Not anymore. With the federal rebate, you can get grid-tie systems installed for around $2.00 per watt. Obviously systems that can take batteries cost more...and then the batteries themselves even more.

what are the maitenance costs and how often do you need to climb onto the roof to clean then?