In an effort to cut carbon emissions, more and more of the electricity we use is being produced by the wind and sun. In the PJM Interconnection, the 13-state grid that includes Pennsylvania, wind and solar production grew from 4.1% in 2021 to 5.7% in 2024, according to preliminary data from the Energy Information Administration. And various state and federal policies want to push that number up to 50% or more in the years ahead. At a time of growing electric demand, nearly all the new power plants proposed for PJM are wind and solar.