Some of the biggest U.S. power companies said they are pushing ahead with investments in renewable and gas-fired electricity and are including climate change as a part of their corporate strategy, regardless of the Trump administration’s plans to roll back Obama-era environmental rules. President Donald Trump has pledged to boost the energy industry by cutting regulation, and on Tuesday his administration took one of its biggest steps yet toward that goal. The head of the Environmental Protection Agency signed a proposal to repeal the first federal limits on carbon emissions at power plants, which would vacate the Obama administration’s cornerstone plan to slow global warming. Some sizable power companies, such as American Electric Power Co. , NRG Energy Inc. and Southern […]