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Allison Creek Hydroelectric Project

Construction Update-October 2016

Wednesday, October 5, 2016 was a historic day for Copper Valley Electric as the Cooperative, joined by Governor Bill Walker, Senator John Coghill, Mayor Ruthie Knight, past and present Board members, and several key project contributors, celebrated the completion of the Allison Creek Hydroelectric Project. Construction is finished, commissioning completed, and on Wednesday, around roughly 1:45 pm, CVEA President Paul Kildal flipped the switch to begin generating the first kWh of commercial power from the project! Congratulations to all CVEA employees and members; you are the proud owners of a new hydroelectric project that will lessen our dependence on fossil fuel and benefit our communities for generations to come! Check out the Project Images link above to view the complete photo album of the celebration. 



Project Summary

The high cost of fuel continues to plague CVEA members. We cannot control the cost of fuel. We can, however, work to lessen our reliance on fuel for power generation, and it is with this goal in mind that CVEA continues to work toward its vision to reduce or eliminate our dependence on fossil fuel and to stabilize the Cooperative's cost of generation with regional, sustainable resources.

CVEA believes hydropower is the most viable and cost-effective renewable resource and has continued to aggressively move the Allison Creek Hydroelectric Project forward since efforts began in 2008. 

Allison Creek promises several renewable energy benefits. The project will:

  • displace 725,000 gallons of fuel annually when it is commissioned in 2016

  •  eliminate 12,000 tons of carbon dioxide annually

  •  allow Solomon Gulch Lake to store more water going into the winter 

  • generate 15 million kWhs to increase CVEA's renewable energy portfolio from 50 to 64 percent of total generation requirements

  • provide benefits for generations

This website was created to keep you informed of the progress of the project. You can access historical reports and articles written for Ruralite Magazine to keep members informed. We will keep this page up to date with important information as we move through the construction phase of the project.

Can't find what you are looking for or have a question? Please contact us.

Construction Update-August 2016

The Coffer Dam that diverted water around the Diversion Structure area while work on the structure was completed, was removed the week of August 15. The video above shows crews removing the gravel and clearing the channel, allowing water to fill the area and go through the diversion structure. Work on the control building above the diversion structure continues. As of today, Monday, August 22, all but the final piece of penstock pipe has been installed. Demobilization of the upper laydown area has began. Soon, every aspect of the project will be tested and then the commissioning process will begin. Currently the project remains on track to begin commercial power genreration in October 2016.

Construction Update-May 2016

In May, the Allison Creek Hydroelectric Project team mobilized to complete the final construction season before the newest hydro project in CVEA's generation portfolio is commissioned in the fall of 2016. Goals for this season include:

  • Installation of the remaining 23 pieces of penstock

  • Construction of the final ten percent of the diversion structure

  • Tie-in of electrical and communications from the powerhouse to the diversion structure

  • Sending water to the penstock for the first time

  • Performing operational tests

  • Training of CVEA Operators to run the new power plant

  • Generation of commercial power

‚ÄčFor the most up-to-date photos of the project, click the Project Images link above.

Construction Update-October 2015

The Allison Creek Hydroelectric Project will soon finish its second construction season and the project remains on track for a 2016 start. This year's construction focused around the diversion structure, the penstock and the inside work at the power house. This year, the diversion structure took shape and received over 1000 cubic yards of concrete. We completed the installation of all  penstock pieces, except about 20 that will be installed in 2016. Remember each piece of pipe is approximately 40 feet in length and will ultimately be made up of 171 pieces and will be 1 and 1/4 miles long. The power house started this season as an empty building. It now houses a bridge crane, main shutoff valve, the bifurcation valve, the turbine housing, the pelton wheel, the generator stator and rotar, and other equipment. In addition, the dispatch office and restroom have been built and the heating and ventilation ducting have been installed. It has also been wired for lighting, production of power, communications, controls, cameras, transformers, and much more.

Construction Update-November 2014

The first construction season of the Allison Creek Hydroelectric Project ended mid-November. Every goal of the project was met or exceeded during the first construction season including ground clearing and building of the lower and upper access roads, blasting and building of the tunnel, building of the powerhouse structure, laying the first stretch of the penstock, and installation of the feeder line. 




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