AP Photo/Reed Saxon, File Installers from California Green Design install solar electrical panels on the roof of a home in Glendale, California. O n March 28, President Trump signed an executive order to repeal President Obama’s Clean Power Plan, which mandated emission reductions from power companies (an estimated 650 million tons by 2025 alone). But since 29 states plus Washington, D.C., have set requirements to adopt more renewable energy (known as renewable portfolio standards), how much impact will Trump’s order have? Despite Trump’s embrace of coal, there is a fair amount of evidence that too many states are too far along on a renewable energy path for Trump to reverse their momentum. The Lawrence Berkeley National Laboratory estimates that the states that have set goals for adopting renewable energy have collectively met 95 percent of their targets. Solar production was up 95 percent in 2016 alone, and that followed several years of rapid expansion, according to GTE Research...