PORT MADISON
Substation-AdjacentKitsap County, Washington · WECC
At a glance
PORT MADISON is a substation-adjacent datacenter candidate site in Kitsap County, Washington, scoring 55.6/100 DC Readiness — 88th of 165 scored sites in the county. Its nearest substation is PORT MADISON (0 mi, 69 kV). It sits in the WECC grid region and the PUGET SOUND ENERGY INC service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 50 MW of candidate capacity here.
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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How does PORT MADISON compare with other sites in Kitsap County?
PORT MADISON ranks 88th of 165 scored candidate sites in Kitsap County. Its 55.6/100 is roughly in line with the county average of 56.3. It is roughly in line with the Washington average of 51.7 and roughly in line with the national average of 53.2.
Against the Washington average, its strongest sub-score is power availability (46 vs 37) and its weakest is speed to power (50 vs 50). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is PORT MADISON to power, fiber and other datacenters?
The nearest mapped substation, PORT MADISON, is about 0 miles away and operates at 69 kV. For connectivity, the nearest internet exchange facility is Digital Fortress (SEA) at 9.6 miles. 7 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is CTI Biopharma, 9.6 miles away.
What are the flood, water and hazard risks at PORT MADISON?
At the county level, FEMA's National Risk Index rates Kitsap County "Relatively Moderate".
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 Kitsap County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| SNO-KING | Substation-Adjacent | 500 kV | 1,000 MW | 3.5 yrs | 68.2 |
| SEATTLE CITY EAST PINE | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 64.1 |
| CRESTON NELSON | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 64.1 |
| MASSACHUSETTS STREET | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 64.1 |
| DUWAMISH | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 64.0 |
| UNKNOWN202929 | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 63.9 |
| SOUTH | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 63.9 |
| DELRIDGE | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 63.0 |
PORT MADISON: common questions
What is the DC Readiness score of PORT MADISON?
PORT MADISON scores 55.6/100 on the GridCensus DC Readiness scale, rated good. It ranks 88th of 165 scored sites in Kitsap County. The Kitsap County average is 56.3 and the Washington average is 51.7.
What is the nearest substation to PORT MADISON?
The nearest mapped substation is PORT MADISON, about 0 miles away, at 69 kV. GridCensus catalogs 50 MW of candidate capacity for the site.
Which electric utility serves PORT MADISON?
PUGET SOUND ENERGY INC (investor owned) holds the retail service territory that contains the site; its holding company is MACQUARIE GROUP.
What grid region is PORT MADISON in?
PORT MADISON is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
How far is PORT MADISON from an internet exchange?
The nearest internet exchange facility is Digital Fortress (SEA), about 9.6 miles away; 7 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “PORT MADISON, Kitsap County, WA”, https://gridcensus.com/datacenter-sites/washington/kitsap-county/port-madison-f33566c3 (data as of October 10, 2026).
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.
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