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In general, these generators are relatively inefficient and are costly to operate, but provide high- value service during peak demand periods. These so-called peaking units are generally natural gas or petroleum fueled generators. Peak load generating units help to meet electricity demand when demand is at its highest, or peak, such as in late afternoon and as when electricity use for air conditioning and heating increases during hot weather and cold weather respectively.Many of the large hydro facilities, several coal plants, and an increasing number of natural gas-fired generators, particularly those in combined power applications, also supply base load power. Geothermal and biomass units are also often operated in base load because of their low fuel costs. Nuclear power plants generally operate as base load service, because of their low fuel costs and the technical limitations on load responsive operation. A base load generating unit runs continuously, producing electricity at a nearly constant rate throughout most of the day. Base load generating units normally supply all or part of the minimum, or base, demand (load) on the electric power grid. ![]() Three major types of generating units vary by intended usage: #Military base locations generation zero map full#In general, power plants do not generate electricity at their full capacities at every hour of the day. To ensure a steady supply of electricity to consumers, operators of the electric power system, or grid, call on electric power plants to produce and place the right amount of electricity on the grid at every moment to instantaneously meet and balance electricity demand. Most solar photovoltaic systems installed on building rooftops are small-scale systems.Ĭlick to enlarge Electricity generating capacity
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