New York Times: Through a government-funded scheme, home owners can get favorable long-term loans to pay for solar panels and other energy-saving devices whose upfront costs are high. But, as Todd Woody of the New York Times reports, the two government entities that guarantee home loans, Fannie Mae and Freddie Mac, regard those loans as liens; they must be cleared if the house is resold. The policy is creating difficulties for families who have already taken out the loans and is putting off others who might want to take advantage of them.