Puerto Rico Gov. Ricardo Rosselló on Thursday signed into law a 100% renewable energy mandate that the hurricane-battered island must meet by 2050. The Public Energy Policy Law of Puerto Rico, passed last month by territory legislators, directs the Puerto Rico Electric Power Authority to source 40% of its power from renewables by 2025 and cease burning coal in 2028 on its way to 100% renewables. The signing comes days after a Department of Energy official recommended the installation of a large gas generator in San Juan, but admitted it "may be at odds" with the 100% goal. PREPA's CEO told reporters it is evaluating the proposal in its revised integrated resource plan