On Apr 3, 3:43*pm, "HeyBub" wrote:
Smitty Two wrote:

A friend of mine had a system put on his roof a year ago. He has no
batteries, so the meter runs backwards during the day and forwards at
night. He spent $18,000, and he's saving $60 a month. Hardly a
respectable return, financially.

Within six months, we're planning to have a system of equivalent
output that's 1/3 the size at 1/3 the cost. That should be approaching
viability from an investment standpoint, particularly with the gov't
incentives now in effect.

The sun delivers 740 watts/sq meter of energy to the earth. At the equator.