Last updated: October 20, 2023, with data from the Electric Power Annual, October 2023. Learn more: Electric Power Monthly: Chapter 1: Net Generation Electric Power Annual: Chapter 3: Net Generation Monthly Energy Review: Electricity Energy Explained: Electricity in the United States

5 Other (utility-scale) sources includes non-biogenic municipal solid waste, batteries, hydrogen, purchased steam, sulfur, tire-derived fuel, and other miscellaneous energy sources. Most pumped storage systems use fossil fuels or nuclear energy for pumping water to the storage component of the system. 4 Pumped storage hydroelectricity generation is negative because most pumped storage electricity generation facilities use more electricity than they produce on an annual basis. 3 Other gases includes blast furnace gas and other manufactured and waste gases derived from fossil fuels. Smaller PV systems are usually installed on building rooftops.

Most small-scale PV systems are at or near the location where the electricity is consumed and many are net metered systems.

2 Small-scale solar photovoltaic (PV) systems are electricity generators with less than one megawatt (MW) of electricity generating capacity, which are not connected at a power plant that has a combined capacity of one MW or larger. 1 Utility-scale electricity generation is electricity generation from power plants with at least one megawatt (or 1,000 kilowatts) of total electricity generating capacity.

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