Sully, SD: data center power outlook

Grid position at a glance

Serving utilities

CAM WAL ELECTRIC COOP, INC, CITY OF ONIDA - (SD), DAKOTA ENERGY COOP INC, MONTANA-DAKOTA UTILITIES CO, MOREAU-GRAND ELECTRIC COOP INC, NORTHWESTERN ENERGY - (SD), OAHE ELECTRIC COOP INC, WAPA-- WESTERN AREA POWER ADMINISTRATION, WEST CENTRAL ELECTRIC COOP INC - (SD)

ISO / market

SPP (Southwest Power Pool)

Highest grid access

345 kV

Substations in county

6

Industrial retail rate

8.7¢/kWhState-level EIA-861 industrial average. The map colours by this, not by a per-county rate.

Per-utility rates in county

4 of 9 serving utilities: 1.9 to 11.3¢/kWhLowest 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

872 lb CO2/MWh

Water withdrawals

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 Water already withdrawn locally, not water available for a new load.

Construction labor near site

1,068 employed in construction within ~120 km (9 of 15 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 Sully

This page gathers the public grid evidence for Sully, South Dakota that bears on a large new load. The highest mapped voltage in Sully is 345 kV, in the high-voltage transmission class. Sully carries 6 substations in the mapped layer, spread across the county.

For Sully, the SPP market (Southwest Power Pool) is the operator that handles interconnection and capacity. The state industrial average retail rate is 8.7 cents per kWh, drawn from EIA-861 and applied to Sully at the state level rather than as a county rate. The serving utilities in Sully that publish a rate range 4 of 9 serving utilities: 1.9 to 11.3¢/kWh, a spread kept separate from the state average.

Sully, South Dakota has nothing in the interconnection queue across the feeds covered here, quiet or uningested. The federal EIA-860M inventory files no planned or under-construction generation in Sully, South Dakota, a real zero rather than a gap. Grid carbon intensity for Sully, via its balancing authority, is 871.526 lb CO2 per MWh in eGRID.

USGS 2015 puts freshwater withdrawals across Sully at 11.99 million gallons per day for all uses, a measure of use, not spare supply. Within roughly a 120 km commute of Sully, about 1,068 people are employed in construction (BLS QCEW), which speaks to how far crews for a multi-year build would travel, not to labour known to be free.

Read the Sully figures as screening-grade context: they describe the surrounding grid, not a specific parcel. The numbers for Sully, South Dakota qualify one another, so grid access, substation density, market membership, and rate are meant to be read as a set, not in isolation. Past this screening view, siting in Sully, South Dakota turns on a study of a particular address, something no county-level page can stand in for. Every number shown for Sully, South Dakota traces to a public source listed below, with its retrieval date, so the provenance is auditable rather than asserted.

Sources