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 for TCAP, a coalition of cities and other political subdivisions that purchase electricity in the deregulated market for their own governmental use. Because high energy costs can impact municipal budgets and the ability to fund essential services, TCAP, as part of its mission, actively promotes affordable energy policies. High energy prices also place a burden on local businesses and home consumers.