Having skin in the energy conservation and renewable energy game in several states since 1979, and experiencing its successes and failures, my observation is that "renewable energy portfolio standards" vary among the 29 states that have them and many of them lack the incentives needed to sustain advancement of renewable energy. At best, some of them are most accurately characterized as token or feel good.
California Governor Brown's recent trip to China and yesterday's meeting in SF with German Minister of the Environment Barbara Hendricks to form alliances are examples of what states need to do to move forward.
Ever since Saint Ron removed Carter's PV array from the White House roof in January 1981, the Federal gubmit has been part of the problem and not part of the solution on this issue. The remainder of the 20th century witnessed Germany and Japan accelerating past Murka on renewable energy technology and implementation. It has been up to the states to advance the cause ever since then and I concur with the author that Trump is making the Feds an even bigger part of the problem than his recent predecessors have, making meaningful action at the state level more critical then ever.