In “The new climate deniers” (Commentary, April 3), Rich Lowry discusses the merits of the anthropogenic global warming theory. It doesn't matter whether the theory is correct or not because nothing can be done about it. All the renewable energy schemes are faulty. In the Great Plains, the output of a wind farm is 30 percent of nameplate. If more energy is needed, excess must be generated and put in hydraulic storage, to go through water turbines when the wind dies down. This alone requires a nameplate capacity of 3.3 times power needs. Allowing for the inefficiencies in the water pumps, pipeline losses, water turbines and electrical facilities, the total nameplate capacity of the wind farms must be 5.5 to 6 times the actual power grid demand.