As of 2009, the $2,000 cap on the Federal Solar Tax Credit is lifted. You will get 30% of total system costs back (equipment and installation). This means you would save $7,500 on a solar system worth $25,000. Combine this with state and local rebates, Solar Renewable Energy Credits (SRECs), and total costs can be cut in half. Take advantage of incentives while they last.
Data from One Block Off the Grid shows that the average solar home in New Jersey earns between $5,000 and $7,000 by selling their SREC credits every year.
To find out what state and local incentives apply to you (they can vary between ZIP codes), you should signup for free solar guidance.