Pennsylvania Joins States Requiring Renewable Energy

From DailyLocal.com, news that Pennsylvania governor Ed Rendell has signed a bill requiring that within fifteen years, 18% of electricity sold in the state come from renewable sources. Apparently, the bill has faced controversy, as environmental groups believe the standards set allow too much "fossil fuel and incineration." I'm assuming this refers to the "Tier 2" energy sources: "energy derived from new energy efficiency measures, coal waste or electricity generated by utilizing by-products of the pulping process and wood manufacturing process, among others."