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Electric Power Monthly

Data for May 2018  |  Release Date: July 24, 2018  |  Next Release: August 24, 2018 
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Table 6.1. Electric Generating Summer Capacity Changes (MW), April 2018 to May 2018





As of End of April 2018 Activity During May 2018 as Reported to EIA As of End of May 2018 Net Change in Capacity - Current Month and Prior Periods Changes in and Total Net Summer Capacity -- Outlook Based on Reports to EIA
Planned Capacity Additions Planned Capacity Reductions Planned Net Change Planned Total Net Summer Capacity
Technology Capacity Source Total In-Service Capacity Actual Capacity Additions Actual Capacity Reductions Total In-Service Capacity Current Month Year to Date Past 12 Months Next Month Next 12 Months Next Month Next 12 Months Next Month Next 12 Months At End of Next Month At End of Next 12 Months
......... Onshore Wind (Summer Capacity) Utility Scale Facilities 88,593.9 3.0 20.9 88,576.0 -17.9 1,061.7 5,299.7 709.9 7,159.5 25.0 25.0 684.9 7,134.5 89,260.9 95,710.5
......... Offshore Wind (Summer Capacity) Utility Scale Facilities 29.3 0.0 0.0 29.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29.3 29.3
...... Wind (Summer Capacity) Utility Scale Facilities 88,623.2 3.0 20.9 88,605.3 -17.9 1,061.7 5,299.7 709.9 7,159.5 25.0 25.0 684.9 7,134.5 89,290.2 95,739.8
......... Solar Photovoltaic Utility Scale Facilities 26,726.6 456.1 0.0 27,182.7 456.1 2,275.9 5,254.9 232.4 4,209.5 0.0 1.2 232.4 4,208.3 27,415.1 31,391.0
......... Solar Thermal without Energy Storage Utility Scale Facilities 1,352.5 0.0 0.0 1,352.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1,352.5 1,352.5
......... Solar Thermal with Energy Storage Utility Scale Facilities 405.4 0.0 0.0 405.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 405.4 405.4
...... Solar Subtotal Utility Scale Facilities 28,484.5 456.1 0.0 28,940.6 456.1 2,275.9 5,254.9 232.4 4,209.5 0.0 1.2 232.4 4,208.3 29,173.0 33,148.9
...... Conventional Hydroelectric Utility Scale Facilities 79,961.2 13.2 109.3 79,865.1 -96.1 -192.7 -52.7 0.0 245.3 0.0 6.1 0.0 239.2 79,865.1 80,104.3
......... Wood/Wood Waste Biomass Utility Scale Facilities 8,864.3 0.0 25.2 8,839.1 -25.2 -223.3 -172.5 0.0 167.9 0.0 24.8 0.0 143.1 8,839.1 8,982.2
......... Landfill Gas Utility Scale Facilities 2,096.5 0.0 17.2 2,079.3 -17.2 -28.8 -24.3 0.0 4.2 1.7 3.7 -1.7 0.5 2,077.6 2,079.8
......... Municipal Solid Waste Utility Scale Facilities 2,245.0 0.0 0.0 2,245.0 0.0 -1.8 -1.8 0.0 0.0 10.0 10.0 -10.0 -10.0 2,235.0 2,235.0
......... Other Waste Biomass Utility Scale Facilities 777.1 11.0 0.0 788.1 11.0 9.9 16.1 50.4 84.4 0.0 0.4 50.4 84.0 838.5 872.1
...... Biomass Sources Subtotal Utility Scale Facilities 13,982.9 11.0 42.4 13,951.5 -31.4 -244.0 -182.5 50.4 256.5 11.7 38.9 38.7 217.6 13,990.2 14,169.1
...... Geothermal Utility Scale Facilities 2,485.6 0.0 0.0 2,485.6 0.0 -7.0 30.0 0.0 39.9 0.0 0.0 0.0 39.9 2,485.6 2,525.5
... Renewable Sources Subtotal Utility Scale Facilities 213,537.4 483.3 172.6 213,848.1 310.7 2,893.9 10,349.4 992.7 11,910.7 36.7 71.2 956.0 11,839.5 214,804.1 225,687.6
......... Natural Gas Fired Combined Cycle Utility Scale Facilities 251,310.8 2,780.1 51.5 254,039.4 2,728.6 7,663.5 12,062.9 4,722.0 11,907.0 163.0 213.0 4,559.0 11,694.0 258,598.4 265,733.4
......... Natural Gas Fired Combustion Turbine Utility Scale Facilities 127,207.9 242.1 213.5 127,236.5 28.6 31.8 631.5 4.0 2,155.1 26.0 295.1 -22.0 1,860.0 127,214.5 129,096.5
......... Natural Gas Steam Turbine Utility Scale Facilities 76,761.5 1,329.4 1,090.6 77,000.3 238.8 2,289.8 1,197.8 0.0 1.0 701.4 1,625.2 -701.4 -1,624.2 76,298.9 75,376.1
......... Natural Gas Internal Combustion Engine Utility Scale Facilities 4,377.4 12.9 0.0 4,390.3 12.9 105.4 160.4 11.3 545.2 3.9 4.8 7.4 540.4 4,397.7 4,930.7
......... Natural Gas with Compressed Air Storage Utility Scale Facilities 110.0 0.0 0.0 110.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 110.0 110.0
......... Other Natural Gas Utility Scale Facilities 122.1 0.0 0.0 122.1 0.0 0.3 0.3 1.4 40.8 0.0 0.0 1.4 40.8 123.5 162.9
...... Natural Gas Subtotal Utility Scale Facilities 459,889.7 4,364.5 1,355.6 462,898.6 3,008.9 10,090.8 14,052.9 4,738.7 14,649.1 894.3 2,138.1 3,844.4 12,511.0 466,743.0 475,409.6
......... Conventional Steam Coal Utility Scale Facilities 249,535.1 0.0 1,350.0 248,185.1 -1,350.0 -11,265.1 -15,759.9 0.0 17.0 3,196.0 7,291.4 -3,196.0 -7,274.4 244,989.1 240,910.7
......... Coal Integrated Gasification Combined Cycle Utility Scale Facilities 815.0 0.0 0.0 815.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 815.0 815.0
...... Coal Subtotal Utility Scale Facilities 250,350.1 0.0 1,350.0 249,000.1 -1,350.0 -11,265.1 -15,759.9 0.0 17.0 3,196.0 7,291.4 -3,196.0 -7,274.4 245,804.1 241,725.7
...... Petroleum Coke Utility Scale Facilities 1,468.9 0.0 0.0 1,468.9 0.0 2.2 2.2 0.0 0.0 0.0 0.0 0.0 0.0 1,468.9 1,468.9
...... Petroleum Liquids Utility Scale Facilities 31,740.6 163.3 2.0 31,901.9 161.3 -321.3 -1,000.7 3.0 22.1 173.8 182.8 -170.8 -160.7 31,731.1 31,741.2
...... Other Gases Utility Scale Facilities 2,375.8 0.0 0.0 2,375.8 0.0 -81.1 -81.1 0.0 0.0 0.0 0.0 0.0 0.0 2,375.8 2,375.8
... Fossil Fuels Subtotal Utility Scale Facilities 745,825.1 4,527.8 2,707.6 747,645.3 1,820.2 -1,574.5 -2,786.6 4,741.7 14,688.2 4,264.1 9,612.3 477.6 5,075.9 748,122.9 752,721.2
...... Hydroelectric Pumped Storage Utility Scale Facilities 22,809.7 57.0 0.0 22,866.7 57.0 58.0 58.0 0.0 57.0 0.0 0.0 0.0 57.0 22,866.7 22,923.7
...... Flywheels Utility Scale Facilities 47.0 31.2 0.0 78.2 31.2 36.2 36.2 0.0 0.0 0.0 0.0 0.0 0.0 78.2 78.2
...... Batteries Utility Scale Facilities 696.0 19.5 0.0 715.5 19.5 10.3 60.9 44.6 112.8 0.0 0.0 44.6 112.8 760.1 828.3
... Energy Storage Subtotal Utility Scale Facilities 23,552.7 107.7 0.0 23,660.4 107.7 104.5 155.1 44.6 169.8 0.0 0.0 44.6 169.8 23,705.0 23,830.2
... Nuclear Utility Scale Facilities 99,642.1 0.0 13.2 99,628.9 -13.2 -5.7 13.3 0.0 0.0 0.0 1,284.9 0.0 -1,284.9 99,628.9 98,344.0
... All Other Utility Scale Facilities 1,775.2 0.0 0.0 1,775.2 0.0 356.3 356.3 0.9 48.8 0.0 0.0 0.9 48.8 1,776.1 1,824.0
TOTAL UTILITY SCALE FACILITIES 1,084,332.5 5,118.8 2,893.4 1,086,557.9 2,225.4 1,774.5 8,087.5 5,779.9 26,817.5 4,300.8 10,968.4 1,479.1 15,849.1 1,088,037.0 1,102,407.0
                                 
......... Estimated Small Scale Solar Photovoltaic Small Scale Facilities 17,228.3     17,552.2 323.9 1,328.1 3,292.8                
...... Estimated Total Solar Photovoltaic All Facilities 43,954.9     44,734.9 780.0 3,604.0 8,547.7                
... Estimated Total Solar All Facilities 45,712.8     46,492.8 780.0 3,604.0 8,547.7                

NOTES:
Planned Capacity Additions reflect plans to begin operating new units and plans to uprate existing units.
Planned Capacity Reductions reflect plans to retire or derate existing units.
Actual Capacity Additions reflect new units, uprates to existing units, corrections to previously reported capacities, and additions not previously reported.
Actual Capacity Reductions reflect retirements of and derates to existing units, corrections to previously reported capacities, and reductions not previously reported.
Capacity from facilities with a total generator nameplate capacity less than 1 MW are excluded from this table.

Sources: U.S. Energy Information Administration, Form EIA-860, 'Annual Electric Generator Report' and Form EIA-860M, 'Monthly Update to the Annual Electric Generator Report.'
Estimated small scale solar photovoltaic capacity is based on data from Form EIA-861M, Form EIA-861 and from estimation methods described in the technical notes.