| Table 4.9. Total Capacity of Distributed and Dispersed Generators by Technology Type |
| 2005 through 2011 |
| Capacity (MW) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Internal Combustion | Combustion Turbine | Steam Turbine | Hydro | Wind | Photovoltaic | Storage | Other | Wind and Other | Total | Number of Generators |
| Distributed Generators | |||||||||||
| 2005 | 4,025.0 | 1,917.0 | 1,830.0 | 999.0 | -- | -- | -- | -- | 995.0 | 9,766.0 | 17,371 |
| 2006 | 3,646.0 | 1,298.0 | 2,582.0 | 806.0 | -- | -- | -- | -- | 1,081.0 | 9,411.0 | 5,044 |
| 2007 | 4,624.0 | 1,990.0 | 3,596.0 | 1,051.0 | -- | -- | -- | -- | 1,441.0 | 12,702.0 | 7,103 |
| 2008 | 5,112.0 | 1,949.0 | 3,060.0 | 1,154.0 | -- | -- | -- | -- | 1,588.0 | 12,863.0 | 9,591 |
| 2009 | 4,339.0 | 4,147.0 | 4,621.0 | 1,166.0 | -- | -- | -- | -- | 1,729.0 | 16,002.0 | 13,006 |
| 2010 | 886.8 | 186.0 | 109.9 | 97.4 | 98.9 | 236.3 | -- | 372.7 | -- | 1,988.0 | 15,630 |
| 2011 | 791.1 | 115.5 | 64.9 | 97.9 | 36.7 | 314.8 | 0.2 | 264.3 | -- | 1,685.4 | 20,941 |
| Dispersed Generators | |||||||||||
| 2005 | 4,290.0 | 335.0 | 126.0 | 2.0 | -- | -- | -- | -- | 13.0 | 4,766.0 | 11,373 |
| 2006 | 6,524.0 | 346.0 | 157.0 | 3.0 | -- | -- | -- | -- | 8.0 | 7,037.0 | 9,536 |
| 2007 | 7,866.0 | 268.0 | 102.0 | 31.0 | -- | -- | -- | -- | 30.0 | 8,297.0 | 11,057 |
| 2008 | 9,335.0 | 86.0 | 248.0 | 34.0 | -- | -- | -- | -- | 70.0 | 9,773.0 | 12,262 |
| 2009 | 9,751.0 | 329.0 | 204.0 | 81.0 | -- | -- | -- | -- | 108.0 | 10,475.0 | 13,928 |
| 2010 | 2,771.2 | 64.4 | 13.8 | 8.4 | 6.3 | 95.2 | 7.0 | 17.9 | -- | 2,984.2 | 16,874 |
| 2011 | 2,916.9 | 40.3 | 14.6 | 6.0 | 3.2 | 2.7 | 8.0 | 7.9 | -- | 2,999.6 | 14,123 |
| Distributed and Dispersed Generators | |||||||||||
| 2005 | 8,315.0 | 2,252.0 | 1,956.0 | 1,001.0 | -- | -- | -- | -- | 1,008.0 | 14,532.0 | 28,744 |
| 2006 | 10,170.0 | 1,644.0 | 2,739.0 | 809.0 | -- | -- | -- | -- | 1,089.0 | 16,448.0 | 14,580 |
| 2007 | 12,490.0 | 2,258.0 | 3,698.0 | 1,082.0 | -- | -- | -- | -- | 1,471.0 | 20,999.0 | 18,160 |
| 2008 | 14,447.0 | 2,035.0 | 3,308.0 | 1,188.0 | -- | -- | -- | -- | 1,658.0 | 22,636.0 | 21,853 |
| 2009 | 14,090.0 | 4,476.0 | 4,825.0 | 1,247.0 | -- | -- | -- | -- | 1,837.0 | 26,477.0 | 26,934 |
| 2010 | 3,658.0 | 250.4 | 123.7 | 105.8 | 105.2 | 331.5 | 7.0 | 390.6 | -- | 4,972.2 | 32,504 |
| 2011 | 3,708.0 | 155.8 | 79.5 | 103.9 | 39.9 | 317.5 | 8.2 | 272.2 | -- | 4,685.0 | 35,064 |
| Distributed and Dispersed generator data in 2005 include a significant number of generators reported by one respondent, which may be for residential applications. Prior to 2010, data contains generators over and under 1 MW, from 2010 forward, data contains only generators under 1 MW. Distributed generators are commercial and industrial generators which are connected to the grid. Dispersed generators are commercial and industrial generators which are not connected to the grid. Both types may be installed at or near a customer`s site, or at other locations. They may be owned by either the customers of the distribution utility or by the utility. Other includes generators for which technology is not specified. Totals may not equal sum of components because of independent rounding. Source: U.S. Energy Information Administration, Form EIA-861, "Annual Electric Power Industry Report." |