Oh sure, massive photovoltaic installations on rooftops are nothing terribly new, but by and large, the ones we've seen are stuck on massive warehouses or elaborate stadiums in foreign lands. Dow Chemical is doing its darnedest to change all that with the introduction of the POWERHOUSE line of solar shingles. As you'd expect, these solar shingles are aimed at roofers looking to tip their hats to Ma Earth while providing shelter for well-endowed homeowners, and unlike most of the futuristic alternatives, the
