Photovoltaic project analysis tools

A cash flow calculator for PV projects
PVcalcMore than a dozen variables can be entered to calculate the effective return of a photovoltaic ('PV') project, e.g. fixed cost, running cost (lease, insurance), financing cost. You can select whether to finance with an annuity, or a simple loan where you build up reserves as you go. There is a tutorial.
Solar irradiation map
irradiation mapSolar irradiation averages are presented on a map. The data is from the University of Massachusettes Amherst, Lowell Solar Energy Engineering.