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The South Carolina Office of Regulatory Staff is moving to a new location. Although our telephone numbers and email addresses will remain the same, effective May 12, 2025, our new physical and mailing address will be 1901 Main St., Suite 1500, Columbia, SC 29201.

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Alternative Fuel Corridors

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Alternative Fuel Corridors

Motorists traveling along major interstates in South Carolina will now see alternative fuel corridor signs. These signs indicate routes that are part of a national network of corridors that support alternative fueling infrastructure. The Energy Office, worked with the SC Department of Transportation (SCDOT) to install the signs in June 2017.

In July 2016, the U.S. Department of Transportation Federal Highway Administration (FHWA) called on states to nominate national plug-in electric vehicle (EV) charging and hydrogen, propane, and natural gas fueling corridors along major roadways as a part of the “Fixing America’s Surface Transportation” (FAST) Act. The Energy Office submitted a nomination to designate all major interstates in South Carolina.

The FHWA designated 55 routes across the U.S. in November 2016 that will serve as the basis for a national network of alternative fuel corridors spanning 35 states. These designated corridors aim to create and expand a national network of alternative fueling, charging infrastructure, and signage along National Highway Systems corridors.

Parts of I-20, I-26, I-77 and I-85 were designated as “signage ready” in South Carolina; enough infrastructure exists along the designated segments of interstate to facilitate refueling. The FHWA may add more highway sections as additional refueling and charging stations are built.

“We’re happy to be the first in the Southeast and the second state in the U.S. to install the signs along the “signage ready” corridors,” said Maeve Mason, former co-coordinator for the Palmetto Clean Fuels coalition.

These new alternative fuel corridor signs were designed to label the corridors, but not necessarily to direct motorists to refueling infrastructure. The Energy Office and SCDOT are planning to build on corridor designation by adding directional signage to identify the specific exits with alternative refueling stations, not unlike the gas and lodging signs that currently exist along South Carolina interstates.

The new signs, and a list of the designated corridors, can be found on the FHWA website.

 

  • Alternative Fuel Corridor Infrastructure Placement Plan 2021 (PDF)
  • Alternative Fuel Corridor Infrastructure Placement Plan 2020 (PDF)
  • Alternative Fuel Corridor Infrastructure Placement Plan 2019 (PDF)

  • National Alternative Fuel Corridor Council Website

Resources

  • Alternative Fuels Corridor Measurement Tool
  • Alternative Fuels Corridors Handout

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Office of Regulatory Staff

1401 Main Street, Suite 900

Columbia, SC 29201

 

General Information: (803) 737-0800

Consumer Complaints and Inquiries:

(803) 737-5230 (local)

1-800-922-1531 (toll-free within South Carolina)


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