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South Carolina

An arrow graphic shows that South Carolina has a voluntary renewable energy goal of 2% distributed energy in 2021.

Carve-out: 0.25% of total generation from systems less than 20 kW
Tracking system: None

South Carolina does not have a comprehensive renewable energy portfolio standard, but a goal for distributed generation by 2021. The Distributed Energy Resource Program Act of 2014 established programs such as rebates and shared solar programs for the investor-owned utilities (IOUs) Duke Progress, Duke Energy, and South Carolina Gas and & Electric. The program specifies 1% of aggregate capacity should come from renewable energy facilities 1 MW-10MW, and 1% come from facilities <1MW, with 25% of the care out from systems <20 kW.

Latest Updates

  • Duke Energy Carolinas Solar Rebate Program closed effective January 28, 2017.

Net Metering

The state's net metering program applies to all utilities with more than 100,000 customers, except for electric cooperatives. No new charges or fees can be imposed on net-metering customer-generators until 2021.

System size limit: 20 kW for residential; 1 MW for nonresidential

Aggregate capacity limit: 2% of average retail peak demand for the previous five years

Credit: Net excess generation is credited at the retail rate.

RECs: Not addressed

Meter aggregation: Not allowed

Interconnection

South Carolina's interconnection standards apply to the IOUs, Progress Energy, Duke Energy, and South Carolina Electric and Gas. Please check utility interconnection procedures for specific interconnection and application instructions.

Eligible Systems Type of Interconnection
Systems up to 20 kW Inverter Process
Systems >20 kW and ≤2 MW (2 MW on higher voltage distribution line, 1 MW on lower distribution line) Fast-Track Process
Systems that fail to qualify for the Fast Track Process Study Process

System size limit: Not specified; South Carolina Public Service Commission has jurisdiction over interconnections of renewable distributed energy resources up to 80 MW.

Liability insurance: Residential customers are required to have a minimum of $300,000 coverage in general liability insurance; nonresidential customers are required to have a minimum of $300,000 coverage in general liability insurance.

External disconnect switch: Required

Third Party Ownership

Third party solar power purchase agreements are not allowed in South Carolina.

Community Solar

There is currently no statewide community solar policy or program. Duke Energy, Progressive Energy, and South Carolina Electric and Gas plan to have community/shared solar programs for their retail customers.

State Incentive Programs

Program Administrator Incentive

Solar Energy and Small Hydropower Tax Credit (Corporate)

South Carolina Department of Revenue

Corporations are eligible to receive a tax credit of 50% of their tax liability for the year, up to $3,500.

Utility Incentive Programs

Utility Incentive Limitations

Duke Energy Carolinas Solar Rebates

$1/Wdc for residential and nonresidential solar PV generators 

System size limit is ≤20 kWac for small solar, total participation capacity should be ≤10MWac.

System size range is >20 kWac and ≤1 MWa, total participation should be <30 MWac.

Program ended January 28, 2017

Progress Energy Solar Rebates

$1/Wdc for residential and nonresidential solar PV generators

System size limit is ≤20 kWac for small solar, total participation capacity should be ≤3.25 MWac.

System size range is >20 kWac and ≤1 MWa, total participation <9.75 MWac.

Program ended January 28, 2017

South Carolina Electric and Gas Nonresidential Programs

Nonresidential customers can receive net metering credit at retail rate or bill credit at a set rate

Maximum system size limit is 1 MWac for both net metering and bill credit. See South Carolina Electric and Gas Bill Credit Agreement for credit amount per kWh based on system size.

Resources

The list below provides some resources for each type of policy or program. Please reference and contact relevant authorities and local utilities for the most up-to-date and accurate information on state and utility policies and incentive programs.

Renewable Energy Goal

Interconnection standards

Programs and incentives