Rural Utilities in Grant County, Washington: A Power Supply Running Tight

From cheap abundance to managed scarcity

Grant County's electricity has been genuinely, exceptionally cheap for decades -- Grant PUD's rates run at roughly a third of the national average and about half the Washington state average, thanks to the county's own share of Columbia River hydropower generated at the Wanapum and Priest Rapids dams. That combination of cheap power and available industrial land is what drew Microsoft and Yahoo to build the area's first data centers in Quincy starting in 2007, and Dell, Intuit, Sabey, and H5 followed over the ensuing years. Today the Quincy area hosts at least 27 data-center buildings, several of them large multi-building campuses.

That growth eventually outran the supply. By 2025, Grant PUD's 8 data-center operators together drew roughly 280 average megawatts -- about 37% of the county's entire electrical load -- prompting the utility's commissioners to vote in March 2025 to impose load-growth caps rather than continue selling power on an open-ended basis. Data-center customers were projected to hit those new caps by the third or fourth quarter of 2025. The underlying constraint is structural: Grant PUD receives roughly 63% of Wanapum and Priest Rapids Dam output, and the utility has long projected using the entirety of that share by 2026. A new high-capacity transmission line from Wanapum Dam to Quincy is under construction to help, but it isn't projected to be finished until 2029.

What this means beyond data centers

This capacity story is specific to Grant PUD's service territory and load mix, not a general Washington-wide utility crisis -- but for anyone evaluating land in or near the Quincy corridor with plans for a use that needs meaningful new or expanded electric service (an agricultural processing facility, a greenhouse operation, a workshop or small manufacturing use, or any other higher-draw use), it's worth confirming directly with Grant PUD what current service-application timelines and capacity availability actually look like, rather than assuming the county's decades-old reputation for cheap, abundant power still means fast, unconstrained new hookups everywhere in the county.

Ordinary residential-scale service for a home on a rural parcel is a different question from the large-load capacity issue described here, and nothing in this page should be read as suggesting a typical home build in Grant County faces the same constraints as an industrial data-center campus. But if your plans for a Grant County parcel involve anything beyond standard residential load, this is exactly the kind of county-specific utility-capacity question worth raising with Grant PUD before finalizing a purchase.

The separate cryptocurrency-mining rate story

Grant County was also an early cryptocurrency-mining hub, again drawn by cheap hydropower. When miners' loads began growing faster than the utility could plan around, Grant PUD created a distinct 'evolving industries' rate class in 2018-2019 specifically covering crypto mining -- a rate that roughly tripled standard bills for the class, phased in through three staged increases, ultimately topping out at 13.7 cents/kWh for small-scale mining operations and 7.9 cents/kWh for large-scale ones. Nine cryptocurrency companies challenged the rate structure in federal court; the U.S. Court of Appeals for the Ninth Circuit affirmed Grant County's authority to impose it in a March 2021 ruling. More than a dozen mining operations have operated in the county at various points since, together drawing a combined 27 megawatts by one recent count -- itself only a fraction of the total requests the PUD has fielded since 2017. Anyone considering a Grant County parcel specifically for crypto mining or another unusually power-intensive use should expect this kind of specialized rate review, not standard commercial service.