Jupiter Power is proposing to build and operate the Cascadia Ridge Resiliency Energy Storage Facility (Cascadia Ridge) in Unincorporated King County, Washington. Cascadia Ridge is a 130-megawatt utility-scale battery energy storage project that will connect to the existing nearby Mt. Si substation. The facility aims to improve the reliability, stability, and resiliency of the regional power grid.
Project Location
Cascadia Ridge Energy Storage will be located across Snoqualmie Pkwy from Snoqualmie Ridge within roughly 45 acres of land just south of the City of Snoqualmie’s Fisher Creek Park in unincorporated King County. The generation tie-line will run south across PSE property and interconnect to the abutting Mt. Si substation.
Project Status
We are currently developing a county permit application to be submitted in late 2025 and have started engaging in preliminary outreach with several local stakeholders.
We plan to start construction in 2027, which would put the project on track to be in service by late-2028.
Further updates to project schedules will be posted on this website.
We plan to start construction in 2027, which would put the project on track to be in service by late-2028.
Further updates to project schedules will be posted on this website.
Photo above: CONSTRUCTION PERSONNEL FINALIZE COMMISSIONING AT A JUPITER BATTERY SITE
Community Benefits
The Cascadia Ridge Energy Storage Facility will benefit local residents and businesses by improving the power grid and supporting the local economy. Major benefits will include:
- Improved reliability, efficiency, and resiliency of the regional power grid without an increase in electricity bills.
- Increased integration of existing and future renewable resources like solar and offshore wind projects across the PNW.
- Benefits of a major financial investment in the project with the potential for significant, predictable local government revenue.
- Industrial-level investments without some of the emission and community impacts of other industrial investments.
Photo above: jupiter power storage site facility in west texas.
Photo above: array of batter storage containers at one of Jupiter Power’s projects in Texas.
Why battery storage?
- Emergency support:
Batteries are an excellent way to deploy energy instantaneously for us in times of need. - Customer demand:
Homes and businesses need reliable energy at all times. Morning and evening hours are typically when the largest amount of energy is needed from the grid to serve customers. During these times, we can pull energy from batteries to meet the high demand. - Maintain stability:
Supply and demand of energy fluctuate throughout the day and changes in either can affect grid stability. Batteries help even out the fluctuation of energy on the grid.