Fred Krupp has long supported a diverse mix of energy supply and a flexible regulatory climate to meet our current needs. But in his enthusiasm for renewables and his distaste for the Trump administration’s broad-based energy policy, he slips up (“‘Energy Dominance’ Needn’t Be Dirty,” op-ed, Sept. 25).
Mr. Krupp cites a Lazard study that claims that wind and solar are the “least expensive” choices for new utility-grade generation capacity. But the study is burdened with so many caveats and contingencies—such as the fluctuating costs of raw materials—that the authors report that their analysis applies only to current circumstances.