Langley Gulch Power Plant

To responsibly plan for our energy future and ensure a reliable supply of electricity, Idaho Power is constructing the Langley Gulch Power Plant and associated transmission lines. This clean, highly-efficient natural gas-fired power plant will be built on a remote site in Payette County, Idaho. Construction will begin in August 2010 and the plant is scheduled for operation in July 2012.
Other current project activities include:


Development of design and construction drawings and specifications

  • Various permitting activities
  • Engineering design for the water pipeline from the Snake River to the project site
  • Selection of an engineering firm and contractor for the gas pipeline construction.

The new power plant was identified as a need in the 2004 and 2006 Integrated Resource Plans (IRP), and as a committed resource in the 2009 IRP. It is supported by the Idaho Public Utilities Commission (IPUC) and is being added to our diversified portfolio of resources which also includes energy efficiency measures and alternative energy resources such as wind, solar, geothermal and biomass.

Langley Gulch will improve electric service reliability and help Idaho Power integrate and deliver intermittent renewable resources to all customers.


Idaho Power is balancing the need to meet growing electricity demand with our ongoing commitment to provide our customers reliable, responsible, fair-priced electricity while maintaining a balanced generation resource portfolio. Building this new power plant helps ensure customers have the electricity they need to secure the same comfortable lifestyles for future generations.                                                        From:

More information is available at: