The U.S. Department of Energy’s (DOE) Loan Guarantee Program opens up a significant source of funding for domestic clean energy projects looking for long-term financing.  By providing a loan guarantee, DOE enables commercial banks to lend to renewable energy projects--simultaneously minimizing bank risk and maximizing the length of the loan to encourage development renewable energy. Launched under Title XVII of the Energy Policy Act of 2005, the loan guarantee program looks to expand commercial use of clean energy technologies in order to create sustainable economic growth, environmental benefits, and secure energy supplies.