The Northern California Power Agency, located in Roseville, California

Roseville, California

-2010:The 2010 United States Census reported that Roseville had a population of 118,788. The population density was 3,279.4 people per square mile...

, is a joint powers agency

Joint Powers Authority

A Joint Powers Authority is an entity permitted under the laws of some states of the USA, whereby two or more public authorities can operate collectively. Joint Powers Authorities may be used where:*an activity naturally transcends the boundaries of existing public authorities...

 formed in 1968 to provide its members with electrical energy purchasing, aggregation, scheduling and management.

The NCPA owns and operate several power plants in a 96% emission-free generation portfolio, including two geothermal units at The Geysers

The Geysers

The Geysers is a complex of 22 geothermal power plants, drawing steam from more than 350 wells, located in the Mayacamas Mountains north of San Francisco, California.The largest in the world, the Geysers has...

 and several hydroelectric

Hydroelectricity

Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy...

 units.

Members

• Alameda Municipal Power
• Bay Area Rapid Transit
  Bay Area Rapid Transit
  Bay Area Rapid Transit is a rapid transit system serving the San Francisco Bay Area. The heavy-rail public transit and subway system connects San Francisco with cities in the East Bay and suburbs in northern San Mateo County. BART operates five lines on of track with 44 stations in four counties...
  
  
• City of Biggs
  Biggs, California
  Biggs is a city in Butte County, California, United States. The population was 1,707 at the 2010 census, down from 1,793 at the 2000 census.- Geography :Biggs is located at ....
  
  
• City of Gridley
  Gridley, California
  Gridley is a city in Butte County, California, United States. The population was 6,584 at the 2010 census, up from 5,382 at the 2000 census.-History:...
  
  
• City of Healdsburg
  Healdsburg, California
  Healdsburg is a city located in Sonoma County, California, in the United States. As of the 2010 United States Census, the city had a population of 11,254...
  
  
• City of Lompoc
  Lompoc, California
  Lompoc is a city in Santa Barbara County, California, United States. The city was incorporated in 1888. The population was 42,434 at the 2010 census, up from 41,103 at the 2000 census....
  
  
• City of Palo Alto
  Palo Alto, California
  Palo Alto is a California charter city located in the northwest corner of Santa Clara County, in the San Francisco Bay Area of California, United States. The city shares its borders with East Palo Alto, Mountain View, Los Altos, Los Altos Hills, Stanford, Portola Valley, and Menlo Park. It is...
  
  
• City of Ukiah
  Ukiah, California
  The average high temperature is 73.5 °F . Average low temperature is 46.1 °F . Temperatures reach 90 °F on an average of 65.6 days annually and 100 °F on an average of 14.4 days annually. Due to frequent low humidity, summer temperatures normally drop into the fifties at night. Freezing...
  
  
• Lodi Electric Utility (lodielectric.com)
• Port of Oakland
  Port of Oakland
  The Port of Oakland was the first major port on the Pacific Coast of the United States to build terminals for container ships. It is now the fifth busiest container port in the United States, behind Long Beach, Los Angeles, Newark, and Savannah...
  
  
• Redding Electric Utility (reupower.com)
• Roseville Electric (rosevilleelectric.org)
• Silicon Valley Power
  Silicon Valley Power
  Silicon Valley Power is a not-for-profit municipal electric utility owned and operated by the city of Santa Clara, California, USA.-History:...
  
  
• Truckee Donner PUD (tdpud.org)
• Turlock Irrigation District (tid.org)

These two agencies are listed as "Associate Members":

• Placer County Water Agency (pcwa.org)
• Plumas-Sierra Rural Electric Cooperative (psrec.coop)