St. Mary's, MD: data center power outlook

Grid position at a glance

Serving utilities

SOUTHERN MARYLAND ELEC COOP INC, VIRGINIA ELECTRIC & POWER CO

ISO / market

PJM (PJM Interconnection)

Highest grid access

230 kV

Substations in county

27

Industrial retail rate

12.5¢/kWhState-level EIA-861 industrial average. The map colours by this, not by a per-county rate.

Per-utility rates in county

No per-utility rate on fileLowest to highest industrial rate among the utilities serving this county (EIA-861 Sales to Ultimate Customers). A spread, not the county’s rate, and it covers only the serving utilities that report one.

Interconnection queue

None on record

Proposed generation

None on file (EIA-860M)Units filed with EIA as planned or under construction (Form EIA-860M). Declared intent from the federal inventory, not the interconnection queue and not guaranteed capacity.

Grid carbon intensity

716 lb CO2/MWh

Water withdrawals

8.6 Mgal/dAll uses, freshwater. Water already withdrawn locally, not water available for a new load.

Construction labor near site

216,271 employed in construction within ~120 km (50 of 51 counties reporting)A large build needs hundreds of skilled construction workers on site for one to three years. A county with few of them within commuting range means bussing crews in, per diem, and housing, which is real cost and schedule risk. This counts people employed in construction within about a 120 km drive (BLS QCEW), summed across nearby counties. It is not labor known to be available: most are already committed to other projects, and no public data reveals who is free.

Grid conditions in St. Mary's

What follows is a screening-grade read of St. Mary's, Maryland, built only from named public datasets. At 230 kV, St. Mary's sits in the transmission class that a large load would look to. The mapped layer packs 27 substations into St. Mary's, a dense spread of options.

Interconnection over St. Mary's runs through the PJM market (PJM Interconnection) and its rules. For St. Mary's, the rate shown is the state industrial average of 12.5 cents per kWh (EIA-861), a state figure and not a county-specific one.

Across the covered feeds, St. Mary's, Maryland carries no interconnection-queue project, from either real quiet or a feed not yet loaded. St. Mary's, Maryland has no EIA-860M generation on file, which reads as zero rather than as a gap. St. Mary's sits under a balancing authority that eGRID puts at 716.09 lb CO2 per MWh.

St. Mary's withdrew 8.61 million gallons per day for all uses in the USGS 2015 data, which counts demand, not headroom. About 216,271 people are employed in construction within a 120 km commute of St. Mary's (BLS QCEW), which frames staffing distance rather than free labour.

For St. Mary's, treat this as screening-grade county context useful for narrowing a search rather than settling a site. Taken together, the figures for St. Mary's, Maryland describe the grid around a prospective site, drawn from public data with their gaps left visible on purpose. To move past screening in St. Mary's, Maryland, a specific address needs its own interconnection study, which this page does not attempt. The figures for St. Mary's, Maryland refresh as their public datasets do, and the exact sources and dates sit in the source log below this section.

Sources