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Datacenter Sites in Charleston County, South Carolina

Charleston County has 113 scored datacenter candidate sites averaging 58.2/100 DC Readiness, with a catalogued aggregate of 8,900 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.

At a glance

Charleston County, South Carolina has 113 scored datacenter candidate sites averaging 58.2/100 DC Readiness, roughly in line with the South Carolina average of 57.1. It ranks 3rd of 46 South Carolina counties by number of sites and 14th by average score. The top-scoring site is Substation-Adjacent site · 10bb6131 at 66.8/100.

113
Candidate sites
58.2/100
Avg DC Readiness
8,900 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Charleston County

Site-selection context for Charleston County

Yessales_tax_exemption
Datacenter tax incentive
10.23¢/kWh
Commercial electricity
8.35¢/kWh
Industrial electricity
10
Fiber providers
Low
Water stress
$11,145
Land price / acre
2,000
Cooling degree days
2,400
Heating degree days
63°F
Mean annual temp

Incentive detail: Sales tax exemption on DC equipment; fee-in-lieu of property tax for $50M+ investments.

How does Charleston County compare with other counties in South Carolina?

By number of scored sites, Charleston County ranks 3rd of the 46 South Carolina counties with a county page, holding 5.5% of the state's 2,061 sites. Its average DC Readiness of 58.2/100 ranks 14th in the state and is roughly in line with the national average of 53.0. Nationally it has the 278th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 88 score 55 or higher.

What types of datacenter sites are in Charleston County?

Substation-Adjacent sites are the most common (65, 58% of the county's inventory), followed by industrial (39) and greenfield (7). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.

What are power cost, hazard, water and fiber conditions in Charleston County?

Industrial electricity averages 8.35¢/kWh and commercial 10.23¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (40). WRI water stress is low. 10 fiber providers report service in the county. The climate runs 2,000 cooling degree days a year with a mean temperature of 63°F. Land is valued around $11,145 an acre.

By site type

Top datacenter sites in Charleston County

Top datacenter sites in Charleston County
SiteTypeVoltageCapacityQueue waitScore
UNKNOWN120969Substation-Adjacent230 kV300 MW3.9 yrs66.8
UNKNOWN120968Substation-Adjacent230 kV300 MW3.9 yrs66.6
UNKNOWN121119Substation-Adjacent230 kV300 MW3.9 yrs66.1
UNKNOWN120996Substation-Adjacent230 kV300 MW3.9 yrs65.9
UNKNOWN121120Substation-Adjacent230 kV300 MW3.9 yrs65.5
UNKNOWN120998Substation-Adjacent230 kV300 MW3.9 yrs65.4
UNKNOWN121113Substation-Adjacent230 kV300 MW3.9 yrs65.1
UNKNOWN120995Substation-Adjacent230 kV300 MW3.9 yrs65.1
UNKNOWN121181Substation-Adjacent230 kV300 MW3.9 yrs65.0
JOHNS ISLANDSubstation-Adjacent230 kV300 MW3.9 yrs63.6
UNKNOWN156712Substation-Adjacent115 kV100 MW3.9 yrs62.7
TAP170088Substation-Adjacent115 kV100 MW3.9 yrs62.7
TAP170089Substation-Adjacent115 kV100 MW3.9 yrs62.7
UNKNOWN120994Substation-Adjacent115 kV100 MW3.9 yrs62.6
UNKNOWN120993Substation-Adjacent115 kV100 MW3.9 yrs62.6
UNKNOWN156701Substation-Adjacent115 kV100 MW3.9 yrs62.5
UNKNOWN121042Substation-Adjacent115 kV100 MW3.9 yrs62.3
EC Near Faber PlaceGreenfield——3.9 yrs62.0
UNKNOWN121043Substation-Adjacent115 kV100 MW3.9 yrs61.5
UNKNOWN121091Substation-Adjacent115 kV100 MW3.9 yrs61.5
TAP142363Substation-Adjacent115 kV100 MW3.9 yrs61.4
UNKNOWN151831Substation-Adjacent115 kV100 MW3.9 yrs61.4
UNKNOWN121044Substation-Adjacent115 kV100 MW3.9 yrs61.3
TAP146649Substation-Adjacent115 kV100 MW3.9 yrs61.3
TAP147103Substation-Adjacent115 kV100 MW3.9 yrs61.3

Every scored site in Charleston County

All 113 sites, best first.

Charleston County datacenter FAQ

How many datacenter sites are in Charleston County?

113 scored datacenter candidate sites, averaging 58.2/100 DC Readiness. That is the 3rd-most of 46 South Carolina counties with five or more sites.

What is the highest-scoring datacenter site in Charleston County?

Substation-Adjacent site · 10bb6131 scores 66.8/100 DC Readiness, the highest of the 113 scored sites in Charleston County (a substation-adjacent site).

Does Charleston County offer datacenter tax incentives?

Sales tax exemption on DC equipment; fee-in-lieu of property tax for $50M+ investments.

What is the natural-hazard risk in Charleston County?

FEMA's National Risk Index rates Charleston County as "Relatively High" (score 40).

What are industrial electricity rates in Charleston County?

Average industrial electricity is 8.35¢/kWh and commercial is 10.23¢/kWh in Charleston County.

More in South Carolina

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 November 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Charleston County, South Carolina”, https://gridcensus.com/datacenter-sites/south-carolina/charleston-county (data as of November 13, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Charleston County, South Carolina 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.

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