There are several Rebates and Tax incentives available for Maryland residents:
Maryland Residents can expect to be eligible for a rebate of $1,000 not based on size of system installed. Maryland Business's can also receive state rebates, with a maximum of $50,000. This rebate is called the Maryland Solar Energy Grant Program. Details can be found by clicking here. Green Street Solar handles all of the application process.
Maryland counties have enacted tax credits of up to $5,000 per solar electric system.
In addition to the Maryland State Rebate, the Federal Government offers a 30% on the total amount spent installing your solar electric system. There is no limit on the amount. See more detail on federal tax credits for solar.