Independent Weekly: If you cut down a forest to save a mountain, does it count as eco-friendly? That’s the crux of the debate going on before the N.C. Utilities Commission that could shape the state’s definition of renewable energy. In the 2007 renewable energy measure, Senate Bill 3, the state mandates that 12.5 percent of the energy sold in 2012 come from renewable sources. Duke Energy is trying to meet that requirement by burning both wood scraps and whole trees cut into chips to generate power at two …