You're a DC politician. You want to do something to promote jobs growth. You want to do something to make a reduction in carbon emissions more feasible and rapidly implementable. And you'd love the idea of being able to give some kind of tangible value to your constituents.
Thus, Home Star is born. The idea would be that homeowners would (either directly in the form of a voucher, or via overseeing programs, or via tax credits) get significant financial credit toward the cost of accredited home energy efficiency retrofits. Stopping up air loss, improving insulation, upgrading appliances, etc. It's not rocket science, but it takes someone pretty knowledgeable to do it right. And...