Operations & Maintenance

​EN worker takes log readings during operator rounds at Stone Creek Hydro Project.

Energy Northwest supports power utilities in the areas of operations and maintenance of generating facilities and electric utility automation. With safety, reliability and cost consciousness always at the forefront, EN specializes in providing quality hydroelectric and wind O&M services throughout the Northwest.

Our O&M strategy strives to enhance performance and reduce maintenance costs. It includes day-to-day operations, regular technical inspections and annual preventative maintenance to help ensure optimal performance of the facility.

In 2020, EN began operations at Stone Creek Hydroelectric Project, a 12-megawatt hydro project on the Clackamas River approximately 45 miles southeast of Portland, Ore. The facility is owned by the Eugene Water & Electric Board, Oregon's largest customer-owned utility. 

​In 2020, EN set up operations for the first time in Idaho at the Dworshak Small Hydro Project, a 3-MW project, for the Idaho Water & Resources Board. 

During 2014 EN took over operations of the 15-MW Tieton Hydroelectric Project at Rimrock Lake in Yakima County, under contract with the city of Burbank, Calif.

In 2017 Energy Northwest set up operations for the first time in Oregon, taking over operation of two powerhouses on the Bull Run River for the city of Portland. Each about 25 miles southeast of the city, one of the dams was built in 1929 and has a 25-megawatt powerhouse, and the other in 1962 with a 12.5-MW powerhouse. Portland residents receive all of their drinking water from the reservoirs provided by these two dams.​​​​​​​​

 O&M Projects

Portland Hydroelectric Project

37.5 megawatts
Bull Run River, near Portland, Ore.
Operated by EN since 2017​


Tieton Hydroelectric Project

15 megawatts
Rimrock Lake, Yakima County, Wash.​
Operated by EN since 2014


Stone Creek Hydroelectric Project

12 megawatts
Clackamas River near Portland, Ore
Operated by EN since 2020​


Dworshak Small Hydroelectric Project

3 megawatts
Orofino, Idaho
Operated by EN since 2020