MARYS LAKE
Substation-AdjacentBoulder County, Colorado · WECC
At a glance
MARYS LAKE is a substation-adjacent datacenter candidate site in Boulder County, Colorado, scoring 54.0/100 DC Readiness — 36th of 83 scored sites in the county. Its nearest substation is MARYS LAKE (0 mi, 115 kV). It sits in the WECC grid region and the PUBLIC SERVICE CO OF COLORADO service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 100 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: Enterprise Zone sales tax exemptions; broadband equipment tax credit.
Site location
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How does MARYS LAKE compare with other sites in Boulder County?
MARYS LAKE ranks 36th of 83 scored candidate sites in Boulder County. Its 54.0/100 is roughly in line with the county average of 54.9. It is roughly in line with the Colorado average of 50.6 and roughly in line with the national average of 53.2.
Against the Colorado average, its strongest sub-score is power availability (56 vs 38) and its weakest is fiber connectivity (58 vs 62). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is MARYS LAKE to power, fiber and other datacenters?
The nearest mapped substation, MARYS LAKE, is about 0 miles away and operates at 115 kV. For connectivity, the nearest internet exchange facility is BLDR-1919 at 26.5 miles. 13 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is BLDR-1919, 26.5 miles away.
What are the flood, water and hazard risks at MARYS LAKE?
At the county level, FEMA's National Risk Index rates Boulder 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 Boulder County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| EC Coal Boulder County | Greenfield | — | — | 3.5 yrs | 62.8 |
| EC Coal Boulder County | Greenfield | — | — | 4.3 yrs | 62.5 |
| EC Coal Boulder County | Greenfield | — | — | 3.5 yrs | 62.5 |
| GUNBARREL | Substation-Adjacent | 230 kV | 300 MW | 3.5 yrs | 62.4 |
| EC Near Valmont | Greenfield | — | — | 3.5 yrs | 62.4 |
| EC Coal Boulder County | Greenfield | — | — | 4.3 yrs | 61.9 |
| EC Coal Boulder County | Greenfield | — | — | 3.5 yrs | 61.7 |
| EC Near Valmont | Greenfield | — | — | 3.5 yrs | 61.1 |
MARYS LAKE: common questions
What is the DC Readiness score of MARYS LAKE?
MARYS LAKE scores 54.0/100 on the GridCensus DC Readiness scale, rated fair. It ranks 36th of 83 scored sites in Boulder County. The Boulder County average is 54.9 and the Colorado average is 50.6.
What is the nearest substation to MARYS LAKE?
The nearest mapped substation is MARYS LAKE, about 0 miles away, at 115 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves MARYS LAKE?
PUBLIC SERVICE CO OF COLORADO (investor owned) holds the retail service territory that contains the site; its holding company is XCEL ENERGY.
What grid region is MARYS LAKE in?
MARYS LAKE is in the WECC region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
How far is MARYS LAKE from an internet exchange?
The nearest internet exchange facility is BLDR-1919, about 26.5 miles away; 13 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, “MARYS LAKE, Boulder County, CO”, https://gridcensus.com/datacenter-sites/colorado/boulder-county/marys-lake-c943258a (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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Every site and score for MARYS LAKE, Boulder County is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.