Hydrostor’s Willow Rock Energy Storage Center
Art Hunter
Preconstruction
Before any physical work can begin on a project of this scale, Hydrostor does substantial preliminary work to ensure there are minimal impacts to the surrounding communities and environment. Preconstruction assessments completed for the Willow Rock Energy Storage Center evaluated potential impacts on air quality, cultural resources, geologic conditions, soil health, water quality, and other factors and included recommendations on how to mitigate those impacts. An extensive permitting process will involve consulting with the local community, state agencies, and federal agencies before construction begins. A-CAES facilities have a smaller physical and environmental footprint than other energy infrastructure, using five to 20 times less water than pumped hydro and more than 10 times less land than solar for an equivalent amount of energy.
Cavern Construction
The first parts of an A-CAES facility to be built are the underground cavern and its associated air, water, and construction shafts. The storage cavern is constructed in bedrock approximately 2,000 to 2,500 feet belowground. This subsurface work is the most time-consuming portion of construction, taking roughly three years.
Frederic "Rick" Carpenter
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