Datacenter Sites in King County, Washington
King County has 375 scored datacenter candidate sites averaging 57.7/100 DC Readiness, with a catalogued aggregate of 34,610 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
375
Candidate sites
57.7/100
Avg DC Readiness
34,610 MW
Catalogued capacity
theoretical aggregate
Relatively Moderate
Hazard rating
Site-selection context for King County
Yessales_tax_exemption
Datacenter tax incentive
8.87¢/kWh
Commercial electricity
7.33¢/kWh
Industrial electricity
16
Fiber providers
Low-Medium
Water stress
$38,716
Land price / acre
300
Cooling degree days
5,000
Heating degree days
48°F
Mean annual temp
Incentive detail: Sales tax exemption on DC equipment and construction for eligible facilities; no state income tax.
By site type
Top datacenter sites in King County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MAPLE VALLEY | Substation-Adjacent | 500 kV | 1,000 MW | 6.9 yrs | 67.8 |
| COVINGTON | Substation-Adjacent | 500 kV | 1,000 MW | 6.9 yrs | 67.1 |
| OZ King | Greenfield | — | — | 1.7 yrs | 66.3 |
| ECHO LAKE | Substation-Adjacent | 500 kV | 1,000 MW | 6.9 yrs | 65.8 |
| OZ King | Greenfield | — | — | 1.7 yrs | 65.7 |
| OBRIEN | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 64.9 |
| RAVER | Substation-Adjacent | 500 kV | 1,000 MW | 6.9 yrs | 64.6 |
| TAP206230 | Substation-Adjacent | 500 kV | 1,000 MW | 6.9 yrs | 64.3 |
| EC Coal King County | Greenfield | — | — | 1.7 yrs | 63.8 |
| SAMMAMISH | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 63.6 |
| OZ King | Greenfield | — | — | 1.7 yrs | 63.1 |
| BERRYDALE | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 63.0 |
| KLAHANIE | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 63.0 |
| NOVELTY HILL | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 62.9 |
| OZ King | Greenfield | — | — | 1.7 yrs | 62.8 |
| EC Coal King County | Greenfield | — | — | 1.7 yrs | 62.7 |
| EC Coal King County | Greenfield | — | — | 1.7 yrs | 61.9 |
| EC Coal King County | Greenfield | — | — | 1.7 yrs | 61.4 |
| UNKNOWN202951 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.7 |
| UNKNOWN201899 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.7 |
| UNKNOWN202945 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.6 |
| PHANTOM LAKE | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.6 |
| EASTGATE | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.6 |
| MIDLAKE | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.5 |
| UNKNOWN201979 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 60.5 |
King County datacenter FAQ
- How many datacenter sites are in King County?
- 375 scored datacenter candidate sites, averaging 57.7/100 DC Readiness.
- Does King County offer datacenter tax incentives?
- Sales tax exemption on DC equipment and construction for eligible facilities; no state income tax.
- What is the natural-hazard risk in King County?
- FEMA's National Risk Index rates King County as "Relatively Moderate" (score 28).
- What are industrial electricity rates in King County?
- Average industrial electricity is 7.33¢/kWh and commercial is 8.87¢/kWh in King County.
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for King County, Washington. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.