Maine Solar and Wind Rebate Program (“Efficiency Maine”)
In 2005, the state of Maine implemented a solar and wind energy rebate incentive program to entice consumers to use alternative energy throughout the state.
“Renewable energy sources like solar and wind not only save money on utility and heating bills today; they also ease concerns about future energy costs. At the same time, they help preserve Maine’s environment and fight global warming by avoiding the burning of fossil fuels” … Efficiency Maine
The program in Maine is comparable to that in many other states such as California and Massachusetts. The rebate is offered on systems up to 100kW (that's a really big system!). For photovoltaic solar (you know, the big panels on the roof) as well as wind systems, you can claim up to $2,000. For solar thermal water heaters you can claim 25% of the cost of installation or $1,000 (whichever is less).
Here's the catch: The yearly state budget is limited. For 2009-2011 the budget is $1 million, and after that it will drop down to $500,000 if special funds from ARRA do not continue. State funding comes for a small tax on utility energy use. If you are interested in the rebate, you must apply and be accepted prior to the installation (you don't want to spend all that money to find out you can't get the rebate).
In addition to the state rebate, you can claim up to 30% of the cost of the installation on your federal taxes, as well.