June 25 — Dealing with intermittency often involves building excess capacity. If you build enough wind turbines, they can still generate a lot of electricity even when the wind isn’t blowing very hard. The downside of excess capacity is that generation has to be curtailed, or “turned-down,” when the wind is blowing full speed and generation exceeds demand. As more turbines are built and the rate of curtailment increases, the economic value of each new wind turbine is less than the one before, making it tough for developers to keep expanding.
Is a policy analyst consultant for TCAP, a coalition of political subdivisions in Texas that purchase electricity in the deregulated market for their own governmental use. Because energy costs are typically a significant budget item to our members, TCAP is consistently looking for ways to save our members money, through cost-saving contracts, energy efficiency or demand response programs.