The state of Delaware has very limited programs available for conversion to solar energy systems at this time. There are numerous programs available, however, through the federal government.
Programs which are currently available are grants for commercial and institutional applications, for 25-35% of total project costs, including those for research and development. The state tax rebate program ranges provides up to a 35% rebate depending upon application type.
Many financing options are also available through the federal government.
Further information and programs can be found at the DSIRE:Database of State Incentives for Renewables & Efficiency.