Johns Prairie Industrial Park
IndustrialMason County, Washington · WECC
Johns Prairie Industrial Park is an industrial datacenter candidate site in Mason County, Washington, interconnecting through WECC. It screens at 51.1/100 DC Readiness and a 6.9 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Sales tax exemption on DC equipment and construction for eligible facilities; no state income tax.
Site location
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Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Mason County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ Mason | Greenfield | — | — | 1.7 yrs | 61.5 |
| SHELTON | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 61.3 |
| UNKNOWN201448 | Substation-Adjacent | 230 kV | 300 MW | 6.9 yrs | 59.8 |
| UNKNOWN207537 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 58.6 |
| UNKNOWN207536 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 57.9 |
| BENSON | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 57.7 |
| BELFAIR | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 57.4 |
| UNKNOWN207535 | Substation-Adjacent | 115 kV | 100 MW | 6.9 yrs | 57.2 |
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Johns Prairie Industrial Park, Mason County. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.