Like natural gas, coal in the Southwest Power Pool is cycled to accommodate wind power

Like natural gas, coal in the Southwest Power Pool is cycled to accommodate wind power
Electricity generation in the Southwest Power Pool (SPP), a regional transmission organization (RTO) covering all or part of fourteen Midwestern states, is mostly provided by three fuels: coal, natural gas, and wind. Several states in SPP have the highest shares of wind generation in the country. In SPP, unlike in other regions, some coal-fired generators are operated similar to natural gas units and are used to balance fluctuations in wind output throughout the day.