Table 4.6. Utility-Scale Capacity Additions, Retirements and Changes by Energy Source, 2017 (Count, Megawatts)


Generator Additions Generator Retirements
Energy Source Number of Generators
Generator Nameplate Capacity
Net Summer Capacity Net Winter Capacity Number of Generators Generator Nameplate Capacity Net Summer Capacity Net Winter Capacity
Coal -- -- -- -- 30 6,947.8 6,309.7 6,421.0
Petroleum 35 61.7 61.3 61.3 68 836.0 716.1 764.7
Natural Gas 98 10,546.1 9,306.6 9,943.4 60 4,646.0 3,736.8 3,802.7
Other Gases -- -- -- -- -- -- -- --
Nuclear -- -- -- -- -- -- -- --
Hydroelectric Conventional 6 207.2 207.6 205.2 6 109.6 109.5 109.5
Wind 67 6,304.9 6,317.9 6,317.9 7 59.9 58.1 58.3
Solar Thermal and Photovoltaic 552 5,055.0 4,959.2 4,856.5 -- -- -- --
Wood and Wood-Derived Fuels 2 129.5 101.0 99.0 8 81.1 70.6 70.7
Geothermal 1 37.0 37.0 37.0 26 138.8 77.6 82.4
Other Biomass 26 80.4 66.7 66.9 26 51.7 37.3 37.6
Hydroelectric Pumped Storage -- -- -- -- -- -- -- --
Other Energy Sources 22 122.4 122.1 122.1 1 20.0 20.0 20.0
Total 809 22,544.2 21,179.4 21,709.3 232 12,890.9 11,135.7 11,366.9

 


Other Changes to Existing Capacity
Energy Source  
Generator Nameplate Capacity
Net Summer Capacity Net Winter Capacity
Coal   -4,767.2 -4,217.3 -4,280.6
Petroleum   -4,378.3 -3,852.7 -3,858.2
Natural Gas   2,548.5 2,295.0 3,717.1
Other Gases   -85.9 -81.1 -89.0
Nuclear   1.3 64.1 54.0
Hydroelectric Conventional   22.5 -314.6 -284.1
Wind   -102.5 -47.9 -44.7
Solar Thermal and Photovoltaic   -72.7 -85.5 -155.9
Wood and Wood-Derived Fuels   -152.9 -135.6 -124.0
Geothermal   29.6 7.3 12.6
Other Biomass   7.8 8.9 11.2
Hydroelectric Pumped Storage   -- 31.7 20.3
Other Energy Sources   789.2 738.6 725.7
Total   -6,160.6 -5,589.1 -4,295.6

 

Notes: Coal includes anthracite, bituminous, subbituminous, lignite, and waste coal, coal synfuel, refined coal, and coal-derived synthesis gas.
Petroleum includes distillate fuel oil (all diesel and No. 1, No. 2, and No. 4 fuel oils), residual fuel oil (No. 5 and No. 6 fuel oils and bunker C fuel oil), jet fuel, kerosene, petroleum coke (converted to liquid petroleum, see Technical Notes for conversion methodology), waste oil, synthetic gas, and propane.
Other Gases also includes blast furnace gas and other manufactured and waste gases derived from fossil fuels.
Hydroelectric Conventional capacity includes conventional hydroelectric power excluding pumped storage facilities.
Wood and wood-derived fuels include wood/wood waste solids (including paper pellets, railroad ties, utility poles, wood chips, bark, and wood waste solids), wood waste liquids (red liquor, sludge wood, spent sulfite liquor, and other wood-based liquids), and black liquor.
Other Biomass include municipal solid waste, landfill gas, sludge waste, agricultural byproducts, other biomass solids, other biomass liquids, and other biomass gases (including digester gases, methane, and other biomass gases).
Other Energy Sources include batteries, hydrogen, purchased steam, sulfur, tire-derived fuels and other miscellaneous energy sources.
Capacity by energy source is based on the capacity associated with the energy source reported as the most predominant (primary) one, where more than one energy source is associated with a generator.
In the case of some wind, solar and wave energy sites, the capacity for multiple generators is reported in a single generator record and is presented as a single generator in the generator count.
Other Changes to Existing Capacity reflect uprates, derates, repowerings, and changes to previously reported generator capacity.
* = Value is less than half of the smallest unit of measure.

Source: U.S. Energy Information Administration, Form EIA-860, 'Annual Electric Generator Report.'