Associated Press: Homeowners who waited until this year to install rooftop solar panels and take advantage of a hefty new government subsidy might not get the payback they anticipated. As federal subsidies are rolled out, states under severe economic strain and utilities have slashed their own solar incentives, and as a result, cut the expected discount by thousands of dollars in some cases. “It’s two steps forward, one step back,” said Jeff Wolfe, the CEO of Vermont-based solar installer …