Electric cars, nuclear power, cracking down on methane leaks, more wind and solar. It's going to take all of it and more to reduce carbon emissions to reach Wolf's goals.
The groups say preparations for construction of a commercial-scale wind turbine by the Ohio National Guard have already violated the Endangered Species Act.
Natural gas will be a chief energy export in Pennsylvania for years to come. But the state's vast and largely untapped wind resources could also add to the state's reputation as a major energy player.