From the Internet
Solar Electrical Online Resources
Important [Links] To Online Resources
Estimating Annual Production Value Tools
This is from MIT. It shows you the # of sun-hours you would expect
to see from your solar panels at varying angles.
PV Watts Calculator
Estimates your annual production based on the Kw size of your
system. For example if you have 4 x 200w panels, enter the DC
value of your sytem at 800w. It takes into account your angle
It will print out energy values over the course of the year in
savings. Be sure to enter 24 cents per kWh in CT, which is really
how much we pay (Jan 2011).
Pages of data from NREL, telling you how much power to expect,
month by month, from an array.