Top Ten Utility Green Power Programs

(as of December 2010)

Which utilities are having the greatest success with their green power programs? NREL has compiled extensive data on utility green power programs and produced the following "Top Ten" lists of program characteristics and results: total sales of renewable energy to program participants; total number of customer participants; customer participation rates; and the lowest premium charged to support new renewables development.


Download Information Release:
NREL Highlights 2010 Utility Green Power Leaders

Previous Top Ten Lists -
December 2010, December 2009, December 2008, December 2007, December 2006, December 2005, December 2004, December 2003, December 2002, December 2001, June 2001, November 2000, April 2000



Green Pricing Program Renewable Energy Sales
(as of December 2010)
Rank Utility Resources Used Sales (kWh/year) Sales (aMW)a
1 Austin Energyb Wind, landfill gas 754,203,479 86.1
2 Portland General Electricc Wind, biomass, geothermal 735,745,202 84.0
3 PacifiCorpbde Wind, biomass, landfill gas, solar 587,373,391 67.1
4 Sacramento Municipal Utility Districtb Wind, hydro, biomass, solar 395,537,564 45.2
5 Xcel Energybf Wind, solar 388,837,429 44.4
6 Puget Sound Energybg Wind, landfill gas, biomass, small hydro, solar 314,892,507 35.9
7 Connecticut Light and
Power/United Illuminating
Wind, hydro 229,408,999 26.2
8 CPS Energyh Wind 186,880,675 21.3
9 National Gridi Biomass, wind, small hydro, solar 167,149,902 19.1
10 We Energiesb Wind, landfill gas, solar 164,546,605 18.8
  1. An "average megawatt" (aMW) is a measure of continuous capacity equivalent (i.e. operating at a 100% capacity factor).
  2. Product is Green-e Energy (www.green-e.org) certified.
  3. Marketed in partnership with Green Mountain Energy Company.
  4. Some Oregon products marketed in partnership with 3Degrees Group Inc.
  5. Includes Pacific Power and Rocky Mountain Power.
  6. Includes Northern States Power, Public Service Company of Colorado and Southwestern Public Service.
  7. Residential product marketed in partnership with 3Degrees Group Inc.
  8. Data period: February 2010 thru January 2011.
  9. Includes Niagara Mohawk, Massachusetts Electric, Narragansett Electric, and Nantucket Electric.


Total Number of Customer Participants
(as of December 2010)
Rank Utility Program(s) Participants
1 Portland General Electrica Clean Wind, Green Source, Renewable Future 77,907
2 PacifiCorpbc Blue Sky Blockd, Blue Sky Usaged, Blue Sky Habitatd 76,322
3 Xcel Energye WindSourced, Renewable Energy Trust 66,401
4 Sacramento Municipal Utility District Greenergyd 51,498
5 PECOf PECO WIND 32,629
6 Puget Sound Energyg Green Power Programd 29,398
7 Connecticut Light and
Power/United Illuminating
CTCleanEnergyOptions 24,283
8 Iberdrola USA: NYSEG and RG&Ef Catch the Wind 23,011
9 We Energies Energy for Tomorrowd 22,306
10 National Gridh GreenUp 21,475
  1. Marketed in partnership with Green Mountain Energy Company.
  2. Includes Pacific Power and Rocky Mountain Power.
  3. Some Oregon products marketed in partnership with 3Degrees Group Inc.
  4. Product is Green-e Energy certified.
  5. Includes Northern States Power, Public Service Company of Colorado and Southwestern Public Service.
  6. Marketed in partnership with Community Energy Inc.
  7. Residential product marketed in partnership with 3Degrees Group Inc.
  8. Includes Niagara Mohawk, Massachusetts Electric, Narragansett Electric, and Nantucket Electric.


Green Power Sales as a Percentage of Total Retail Electricity Sales (in kWh)
(as of December 2010)
Rank Utility Program(s) % of Load
1 Waterloo Utilitiesa Renewable Energy Programb 22.6%
2 Edmond Electricc Pure and Simple 9.9%
3 Portland General Electricd Clean Wind, Green Source, Renewable Future 8.1%
4 City of Palo Alto Utilitiese Palo Alto Greenb 7.4%
5 River Falls Municipal Utilities Renewable Energy Programa 7.2%
6 Austin Energy Green Choiceb 6.3%
7 Madison Gas and Electric Green Power Tomorrow 4.5%
8 Pacific Power-Oregon Onlyf Blue Sky Blockb, Blue Sky Usageb, Blue Sky Habitatb 4.3%
9 Sacramento Municipal Utility District Greenergyb 3.9%
10 Park Electric Cooperativeg Green Power Program 3.4%
  1. Power supplied by WPPI Energy.
  2. Product is Green-e Energy certified.
  3. Power supplied by Oklahoma Municipal Power Authority.
  4. Marketed in partnership with Green Mountain Energy Company.
  5. Marketed in partnership with 3Degrees Group Inc.
  6. Some Oregon products marketed in partnership with 3Degrees Group Inc.
  7. Power supplied by Basin Electric Power Cooperative.


Price Premium Charged for New, Residential Customer-Driven Renewable Power
(as of December 2010)
Rank Utility Resources Used Premium (¢/kWh)
1 Indianapolis Power & Light Companya Wind 0.14
2 Edmond Electricbc Wind 0.27
3 Avista Utilities Wind, landfill gas, hydro 0.33
4 City of Onawa Wind 0.40
5 Flathead Electric Cooperatived Wind 0.50
5 Moorhead Public Service Wind 0.50
5 Sacramento Municipal Utility Districta Wind, hydro, biomass, solar 0.50
8 OG&E Electric Servicese Wind 0.72
9 Emerald People's Utility District Landfill gas, wind, biomass 0.80
10 Xcel Energy (Minnesota only)ac Wind 0.84
  1. Product is Green-e Energy certified.
  2. Power supplied by Oklahoma Municipal Power Authority.
  3. Premium is variable; customers in these programs are exempt or otherwise protected from changes in utility fuel charges.
  4. Power is supplied by Basin Electric Power Cooperative.
  5. 0.72¢/kWh represents the average price premium paid. The premium varies from .7¢/kWh to .9¢/kWh, based on purchase quantities.


Customer Participation Rate
(as of December 2010)
Rank Utility Program(s) Customer Participation Rate Program Start Year
1 City of Palo Alto Utilitiesa Palo Alto Greenb 21.5% 2003
2 Portland General Electricc Clean Wind, Green Source, Renewable Future 12.6% 2002
3 Farmers Electric Cooperative of Kalona Green Power Project 11.2% 2009
4 Madison Gas and Electric Green Power Tomorrow 9.0% 1999
5 Sacramento Municipal Utility District Greenergyb 8.7% 1997
6 City of Naperville, ILd Renewable Energy Program 8.0% 2005
7 Silicon Valley Powera Santa Clara Green Powerb 7.8% 2004
8 Pacific Power - Oregon Onlyg Blue Sky Blockb, Blue Sky Usageb, Blue Sky Habitatb 6.9% 2000h
9 River Falls Municipal Utilitiese Renewable Energy Programb 6.4% 2001
10 Lake Mills Light & Watere Renewable Energy Programb 5.3% 2001
  1. Marketed in partnership with 3Degrees Group Inc.
  2. Product is Green-e Energy certified.
  3. Marketed in partnership with Green Mountain Energy Company.
  4. Marketed in partnership with Community Energy Inc.
  5. Power supplied by WPPI Energy.
  6. Some products marketed in partnership with 3Degrees Group Inc.
  7. Blue Sky Habitat & Blue Sky Usage programs began in 2002.


Community Solar Programs
(as of December 2010)
Utility/Provider Program Program Size (kW) Program Start
Ashland, Oregon Solar Pioneers II 63 2008
Bainbridge Island, Washington Solar for Sakai 5 2009
Ellensburg, Washington Community Solar Project 27 2006
Florida Keys Electric Cooperative Simple Solar 117 2008
Holy Cross Energy/Clean Energy Collective Mid Valley Solar Array 80 2010
Sacramento Municipal Utility District SolarShares 1,000 2008
St. George, Utah SunSmart 250 2009
United Power Sol Partners Cooperative Solar Farm 10 2009

For more information on community solar programs, see: http://apps3.eere.energy.gov/greenpower/markets/community_re.shtml.



For More Information -
Online Report: Utility Green Pricing Programs: What Defines Success?. NREL/TP-620-29831, August 2001. (PDF 1.1 MB)


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