Electric Substations in Rhode Island
40 named substations in Rhode Island, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.
At a glance
How is Rhode Island's substation network split by voltage?
By maximum voltage, the named substations break down as 4 at 345–499 kV; 34 at 115–229 kV; 2 withvoltage not recorded. 10% of Rhode Island's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 115 kV is level with the national median of 115 kV.
How does Rhode Island compare with other states?
Rhode Island ranks 45th of 50 states and DC by number of named substations and 45th by named substations at 345 kV or above. It also has 445 scored datacenter candidate sites with an average DC Readiness score of 56.3 (national average 53), and an average power sub-score of 33.8 against 37.4 nationally. Most of those sites (445) are in the ISO-NE market.
Which substations in Rhode Island have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| KENT COUNTY | 345 kV | 8 | — |
| OCEAN STATE | 345 kV | 3 | — |
| SHERMAN ROAD | 345 kV | 5 | CONNECTICUT LIGHT & POWER CO |
| WEST FARNUM | 345 kV | 9 | FITCHBURG GAS AND ELECTRIC LIGHT COMPANY |
| ADMIRAL STREET | 115 kV | 2 | — |
| BLACKBURN SWITCHING STATION | 115 kV | 4 | — |
| CANONICUS SWITCHYARD | 115 kV | 4 | — |
| CHASE HILL | 115 kV | 2 | — |
| CLARKSON STREET | 115 kV | 2 | — |
| DAVISVILLE | 115 kV | 2 | — |
| DEXTER | 115 kV | 4 | — |
| DRUMROCK | 115 kV | 6 | — |
| FRANKLIN SQUARE | 115 kV | 9 | — |
| GATE II | 115 kV | 3 | — |
| HARTFORD AVENUE | 115 kV | 6 | — |
| JEPSON | 115 kV | 5 | — |
| JOHNSTON | 115 kV | 2 | — |
| KENYON | 115 kV | 2 | — |
| KILVERT STREET | 115 kV | 2 | — |
| LINCOLN AVENUE | 115 kV | 2 | — |
| NASONVILLE | 115 kV | 1 | — |
| NAVY 1 | 115 kV | 2 | — |
| OLD BAPTIST ROAD | 115 kV | 2 | — |
| PAWTUCKET | 115 kV | 3 | — |
| POINT STREET | 115 kV | 2 | — |
| PUTNAM PIKE | 115 kV | 2 | — |
| RIVERSIDE | 115 kV | 3 | — |
| SOCKANOSSET | 115 kV | 2 | — |
| SOUTH STREET | 115 kV | 3 | — |
| STAPLES | 115 kV | 2 | — |
| TOWER HILL | 115 kV | 2 | — |
| WAMPANOUG | 115 kV | 2 | — |
| WARREN | 115 kV | 3 | — |
| WASHINGTON | 115 kV | 2 | — |
| WEST KINGSTON | 115 kV | 3 | — |
| WOLF HILL | 115 kV | 2 | — |
| WOOD RIVER | 115 kV | 2 | — |
| WOONSOCKET | 115 kV | 8 | FITCHBURG GAS AND ELECTRIC LIGHT COMPANY |
| NEW LONDON AVENUE | — | 0 | — |
| WARWICK | — | 0 | — |
Every named substation in Rhode Island
All 40 named substations, grouped by voltage band.
345–499 kV · 4
115–229 kV · 34
- ADMIRAL STREET
- BLACKBURN SWITCHING STATION
- CANONICUS SWITCHYARD
- CHASE HILL
- CLARKSON STREET
- DAVISVILLE
- DEXTER
- DRUMROCK
- FRANKLIN SQUARE
- GATE II
- HARTFORD AVENUE
- JEPSON
- JOHNSTON
- KENYON
- KILVERT STREET
- LINCOLN AVENUE
- NASONVILLE
- NAVY 1
- OLD BAPTIST ROAD
- PAWTUCKET
- POINT STREET
- PUTNAM PIKE
- RIVERSIDE
- SOCKANOSSET
- SOUTH STREET
- STAPLES
- TOWER HILL
- WAMPANOUG
- WARREN
- WASHINGTON
- WEST KINGSTON
- WOLF HILL
- WOOD RIVER
- WOONSOCKET
voltage not recorded · 2
Frequently asked questions
How many electric substations are in Rhode Island?
HIFLD records 134 substations in Rhode Island, of which 40 carry a station name. That is the 45th-most named substations of any state in the dataset.
What is the highest-voltage substation in Rhode Island?
4 named substations in Rhode Island share the top voltage of 345 kV, including KENT COUNTY, OCEAN STATE, SHERMAN ROAD.
Which substation in Rhode Island connects the most transmission lines?
WEST FARNUM has the most connected transmission lines of the named substations listed here, with 9 at up to 345 kV.
How many substations in Rhode Island are 345 kV or higher?
4 of 40 named substations (10%) operate at 345 kV or above, compared with 8% nationally. Rhode Island ranks 45th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Rhode Island are at substations?
58 of the 445 scored candidate sites in Rhode Island are substation sites — locations generated at an existing substation. Scored sites across Rhode Island average 56.3 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Rhode Island, A to Z.
More on Rhode Island, and states with similar counts
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Electric substations in Rhode Island”, https://gridcensus.com/substations/rhode-island (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for substations in Rhode Island 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.