Pima, AZ: data center power outlook

Grid position at a glance

Serving utilities

AJO IMPROVEMENT CO, AK-CHIN ELECTRIC UTILITY AUTHORITY, ARIZONA PUBLIC SERVICE CO, BUCKEYE WATER C&D DISTRICT, ELECTRICAL DIST NO2 PINAL COUNTY, ELECTRICAL DIST NO3 PINAL COUNTY, ELECTRICAL DIST NO4 PINAL COUNTY, ELECTRICAL DIST NO8 MARICOPA, GILA RIVER INDIAN UTILITY AUTHORITY (GRICUA), HARQUAHALA VALLEY PWR DISTRICT, HOHOKAM IRR & DRAIN DIST, MARICOPA COUNTY M W C DIST #1, OCOTILLO WATER CONSERV. DIST., SULPHUR SPRINGS VALLEY E C INC, TOHONO O'ODHAM UTILITY AUTHORITY, TONOPAH IRRIGATION DISTRICT, TRICO ELECTRIC COOPERATIVE INC, TUCSON ELECTRIC POWER CO, USBIA-SAN CARLOS PROJECT, WAPA-- WESTERN AREA POWER ADMINISTRATION, WELLTON-MOHAWK IRR & DRAIN DIST

ISO / market

NON_ISO (Not in an organized wholesale market)

Highest grid access

345 kV

Substations in county

74

Industrial retail rate

8.1¢/kWhState-level EIA-861 industrial average. The map colours by this, not by a per-county rate.

Per-utility rates in county

10 of 21 serving utilities: 1.9 to 15.7¢/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

1,447 lb CO2/MWh

Water withdrawals

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 Water already withdrawn locally, not water available for a new load.

Construction labor near site

25,607 employed in construction within ~120 kmA 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 Pima

Everything here about Pima, Arizona comes from public federal and state records, with the gaps left visible. Pima reaches 345 kV, a high-voltage transmission class, at its strongest mapped point of grid access. With 74 substations mapped, Pima offers interconnection points across many locations.

Because Pima, Arizona sits outside an organized market, capacity and interconnection are handled by the utility and bilateral deals, not a market operator. The rate for Pima is the 8.1 cents per kWh state industrial average (EIA-861), the same figure the map colours by. Across Pima, reported per-utility industrial rates cover 10 of 21 serving utilities: 1.9 to 15.7¢/kWh, offered only as context beneath the state figure.

Across the covered feeds, Pima, Arizona carries no interconnection-queue project, from either real quiet or a feed not yet loaded. EIA-860M lists nothing planned or under construction for Pima, Arizona, which is a national filing and so a real zero. The balancing authority covering Pima carries a grid carbon intensity of 1,446.934 lb CO2 per MWh in eGRID.

Reported freshwater withdrawals for all uses in Pima are 300.05 million gallons per day in the USGS 2015 compilation, existing demand rather than water free for a new load. Around Pima, some 25,607 people work in construction within about a 120 km commute (BLS QCEW), a measure of reach, not of available crews.

These numbers for Pima are screening-grade context for the whole county, drawn from public data with the gaps left visible. Read the figures for Pima, Arizona together rather than one at a time: grid access matters less without substations near it, and a quiet queue reads differently inside an organized market than outside one. The next step for Pima, Arizona is an address-level interconnection study; the county figures here only narrow where to look. For Pima, Arizona, the source log below records where each figure comes from and when it was pulled, keeping the provenance visible.

Sources