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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 4.3.B. Summer 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 (MW)[1] -- Summer
    Actual Projected
    2010 2011E 2012E 2013E 2014E 2015E
Eastern
Interconnection		 FRCC 45,522 42,945 43,389 44,056 44,787 45,770
NPCC 56,232 56,174 56,618 56,902 57,127 57,606
Balance of
Eastern Region		 454,759 442,400 454,051 461,791 467,431 471,764
MAPP 4,493 4,704 4,926 5,216 5,285 5,379
MISO 100,963 90,249 85,157 87,015 87,408 88,128
PJM 136,465 137,341 151,780 153,510 155,793 157,527
SERC 160,896 158,323 159,852 162,247 164,805 166,467
SPP 51,942 51,783 52,337 53,802 54,140 54,263
ERCOT TRE 64,378 62,286 63,880 65,790 68,381 70,231
Western
Interconnection		 WECC 126,944 126,586 127,446 128,925 130,801 133,139
All Grids Contiguous
U.S.		 747,836 730,391 745,384 757,464 768,528 778,510
Interconnection NERC Regional
Assesment Area		 Capacity Resources (MW)[2] -- Summer
    Actual Projected
    2010 2011E 2012E 2013E 2014E 2015E
Eastern Interconnection FRCC 53,370 53,538 54,695 54,815 56,242 57,253
NPCC 67,569 71,943 72,333 74,119 74,761 74,254
Balance of
Eastern Region		 571,719 569,691 575,220 579,720 581,186 578,986
MAPP 7,210 6,563 6,516 6,326 6,321 6,371
MISO 131,691 111,945 106,631 106,690 106,709 106,732
PJM 168,970 181,740 189,601 191,265 191,425 192,011
SERC 200,511 203,220 205,834 207,560 208,362 205,988
SPP 63,337 66,224 66,638 67,879 68,369 67,884
ERCOT TRE 73,857 73,199 74,902 75,063 77,223 78,003
Western
Interconnection		 WECC 158,407 171,032 180,001 186,410 188,386 191,799
All Grids Contiguous
U.S.		 924,922 939,403 957,151 970,127 977,798 980,295
Interconnection NERC Regional Assesment Area Capacity Margin (percent)[3] -- Summer
Actual Projected
    2010 2011E 2012E 2013E 2014E 2015E
Eastern Interconnection FRCC 14.7 19.8 20.7 19.6 20.4 20.1
NPCC 16.8 21.9 21.7 23.2 23.6 22.4
Balance of Eastern Region 20.5 22.3 21.1 20.3 19.6 18.5
MAPP 37.7 28.3 24.4 17.5 16.4 15.6
MISO 23.3 19.4 20.1 18.4 18.1 17.4
PJM 19.2 24.4 19.9 19.7 18.6 18.0
SERC 19.8 22.1 22.3 21.8 20.9 19.2
SPP 18.0 21.8 21.5 20.7 20.8 20.1
ERCOT TRE 12.8 14.9 14.7 12.4 11.4 10.0
Western Interconnection WECC 19.9 26.0 29.2 30.8 30.6 30.6
All Grids Contiguous
U.S.		 19.1 22.2 22.1 21.9 21.4 20.6
[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."