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An arrow graphic shows that Delaware’s renewable portfolio standard increases from 2% in 2013, to 25% in 2025/2026.

Carve-out: 3.5% of retail electricity sales must come from solar PV
Tracking system: PJM- Generation Attribute Tracking System (GATS)


Delaware's RPS applies to investor-owned utilities (IOUs), retail electric suppliers, municipal utilities, and rural electric cooperatives. Exemptions can be made under certain circumstances. The 3.5% PV requirement is a part of the main target. Delaware's Green Energy Program requires utilities to offer rebates for solar PV systems. The state's Green Energy Endowment Program provides grants to support third party financing. Midmarket customers may be eligible for low-interest financing from the Energize Delaware Revolving Loan Fund. Customer-generators interested in selling Solar Renewable Energy Credits (SRECs) into the Delaware spot market must be certified by the Delaware Public Service Commission (PSC) as an eligible generator.

Latest Updates

  • In November 2016, the Connecticut Public Utilities Regulatory Authority (PURA) required suppliers to compensate customers for net excess generation at the wholesale cost for two annual banking periods starting on April 1st or October 1st as chosen by the customer.

Net Metering

Delaware modified the state net metering significantly in 2017, including expanding it to all customer classes, adding biogas and fuel cells as eligible technologies, addressing the ownership of Renewable Energy Certificates (RECs), and increasing the prior individual system limit of 25 kW. The state further extended net metering to farm service customers on residential rates, removed provisions requiring annual forfeiture of Net Excess Generation (NEG), and expanded the aggregate program capacity limit to 5% of electric supplier's aggregated customer monthly peak demand in 2009.

System size limit: 2 MW for Delmarva; 500 kW for Delaware Electric Cooperative (DEC): 100 kW for farm customers on residential rates

Aggregate cap: 5% of electric supplier's aggregated customer monthly peak demand

Credit: Sum of volumetric energy components of delivery service charges

RECs: Customers retain ownership of RECs

Meter aggregation: Customers are allowed to aggregate meters to subscribe to a portion of a community-owned system


Delaware does not have a statewide interconnection standard. Delmarva, the state's only Investor Owned Utility (IOU) has four levels of interconnection based on system size and system type. The 2011 new guidelines apply to interconnections of all types of distributed generation systems of less than 10 MW to the electric distribution system for the utility. An interconnection may be eligible for review if small generator facilities use lab-certified equipment or field-approved interconnection equipment.

Eligible Systems Type of Interconnection
≤10 kW 10 kW Inverter Process

Voltage-Differentiated: <5 kV to ≤ 69 kV

Applicable System Size (Regardless of Location): 500kW to 4 MW

Applicable System Size (Regardless of Location): 500kW to 5 MW

Fast-Track Process
Through 20 MW Study Process

System size limit: 10 MW (limit of Delmarva's standard interconnection agreement)

Liability insurance: Varies by system size and/or type

External disconnect switch: Required

Third Party Ownership

Third party power purchase agreements are allowed in Delaware. Third party financing is supported by the state’s Green Energy Endowment program.

Community Solar

Community solar is allowed under the state's Community Net Metering Provisions. Owners of community solar facilities may assign net metering credits to any customer's account. Subscribers on the same distribution feeder as the system are compensated at the full retail rate. Subscribers on a different distribution feeder are compensation at a standard offer service rate.

State Incentive Programs

Program Administrator Incentive
Energize Delaware Revolving Loan Fund Delaware Sustainable Energy Utility (DESEU) DESEU provides low-interest financing for solar projects to credit-qualified businesses through the Energize Delaware Revolving Loan Fund program. DESEU also serves as an SREC aggregator for customer-sited solar projects certified by the Delaware PSC and administers the bid process for the Delmarva SREC Procurement Program
Green Energy Endowment Program Department of Natural Resources and Environmental Control Provides cash grants to customers that have constructed, purchased, leased, or who have executed a power purchase agreement and have placed the system in service. The state reserves 40% of the program’s funds for non-residential projects. The grant amount shall be "no more than is necessary to promote deployment of renewable energy technologies."

Utility Incentive Programs

Delmarva Power also administers an SREC procurement program. The program uses a public competitive solicitation process to procure SRECs under 20-year contracts. In 2015, the weighted average bid prices for SRECs were $60.40 for systems smaller than 30 kW, $96 for systems between 30 and 200 kW, and $53.26 for systems between 200 kW and 2,000 kW.

Utility Incentive Limitations
Delmarva Green Energy Fund

$0.85/W for first 5 kW

$0.25/W >5 kW


$1.75/W for first 5 kW
$1.00/W ≤50 kW

Systems <50 kW
Rebate capped at $24,000
Delaware Electric Cooperative Green Energy Fund $0.85/W for first 5 kW
$0.25/W >5 kW

Total rebate limited to $5,000 for customers with average peak monthly demand of less than 50 kW

$7,500 for customers with average peak monthly demand above

Municipal Utility Green Energy Fund programs 33.3% of installed cost Capped at $30,000


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 Portfolio Standard

Net metering and interconnection

Programs and incentives