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Electric Power Annual 2010 Data Tables

With Data for 2010   |  Release Date:  November 09, 2011   |  Next Release Date: November 2012

Table 4.4.B.Winter Net Internal Demand, Capacity Resources, and Capacity Margins by North American Electric Reliability Corporation Assessment Area, 2010 Actual, 2011-2015 Projected
(Megawatts)
Interconnection NERC Regional
Assesment Area		 Net Internal Demand[1] -- Winter
    Actual Projected
    2010/
2011		 2011/
2012E		 2012/
2013E		 2013/
2014E		 2014/
2015E		 2015/
2016E
Eastern Interconnection FRCC 45,954 44,196 44,750 45,350 45,923 46,503
NPCC 44,172 44,924 44,637 44,422 44,216 44,354
Balance of
Eastern Region		 389,351 384,993 390,736 394,849 396,861 401,086
MAPP 4,877 4,746 4,686 4,929 4,977 5,062
MISO 80,311 71,233 67,389 69,591 69,906 70,755
PJM 115,535 119,806 127,464 127,243 128,662 129,699
SERC 148,062 148,990 150,504 151,921 152,244 153,879
SPP 40,566 40,218 40,693 41,165 41,073 41,691
ERCOT TRE 55,917 50,158 49,817 51,900 53,503 54,719
Western
Interconnection		 WECC 99,515 104,740 105,879 107,570 109,542 111,261
All Grids Contiguous
U.S.		 634,909 629,011 635,819 644,091 650,044 657,923
Interconnection NERC Regional Assesment Area Capacity Resources[2] -- Winter
    Actual Projected
    2010/
2011		 2011/
2012E		 2012/
2013E		 2013/
2014E		 2014/
2015E		 2015/
2016E
Eastern
Interconnection		 FRCC 57,358 55,786 57,282 58,030 61,245 60,543
NPCC 70,557 74,946 75,937 77,155 77,850 77,706
Balance of
Eastern Region		 595,627 570,224 578,991 581,968 582,872 580,949
MAPP 6,941 7,078 7,038 7,118 7,118 7,088
MISO 129,241 107,051 101,737 101,796 101,815 101,838
PJM 190,000 182,643 189,777 191,426 192,016 192,022
SERC 207,558 208,978 214,974 215,492 215,346 213,657
SPP 61,888 64,474 65,466 66,137 66,577 66,345
ERCOT TRE 77,660 77,256 78,440 78,535 80,695 82,095
Western
Interconnection		 WECC 156,413 161,583 168,816 172,598 175,807 176,112
All Grids Contiguous
U.S.		 957,615 939,795 959,466 968,287 978,469 977,406
Interconnection NERC Regional
Assesment Area		 Capacity Margin (percent)[3] -- Winter
    Actual Projected
    2010/
2011		 2011/
2012E		 2012/
2013E		 2013/
2014E		 2014/
2015E		 2015/
2016E
Eastern Interconnection FRCC 19.9 20.8 21.9 21.9 25.0 23.2
NPCC 37.4 40.1 41.2 42.4 43.2 42.9
Balance of
Eastern Region		 34.6 32.5 32.5 32.2 31.9 31.0
MAPP 29.7 32.9 33.4 30.7 30.1 28.6
MISO 37.9 33.5 33.8 31.6 31.3 30.5
PJM 39.2 34.4 32.8 33.5 33.0 32.5
SERC 28.7 28.7 30.0 29.5 29.3 28.0
SPP 34.5 37.6 37.8 37.8 38.3 37.2
ERCOT TRE 28.0 35.1 36.5 33.9 33.7 33.3
Western
Interconnection		 WECC 36.4 35.2 37.3 37.7 37.7 36.8
All Grids Contiguous
U.S.		 33.7 33.1 33.7 33.5 33.6 32.7
[1] Net Internal Demand represent the system demand that is planned for by the electric power industry's reliability authority and is equal to Internal Demand less Direct Control Load Management and Interruptible Demand.
[2] Capacity Resources: Utility and nonutility-owned generating capacity that is existing or in various stages of planning or construction, less inoperable capacity, plus planned capacity purchases from other resources, less planned capacity sales.
[3] Capacity Margin is the amount of unused available capability of an electric power system at peak load as a percentage of capacity resources.
Notes:
• NERC region and reliability assessment area maps are provided on EIA's Electricity Reliability web page: http://www.eia.gov/cneaf/electricity/page/eia411/eia411.html
• Projected data are updated annually.
• Peak load represents an hour of a day during the associated peak period.
• The Winter peak period begins October 1 and extends through May 31.
• Historically the MRO, RFC, SERC, and SPP regional boundaries were altered as utilities changed reliability organizations. The historical dataseries for these regions have not been adjusted. Instead, the Balance of Eastern Region category was introduced to to provide a consistenttrend of the Eastern interconnection.
• E - Estimate
Source: U.S. Energy Information Administration, Form EIA-411, "Coordinated Bulk Power Supply and Demand Program Report."