Sources reviewed · 3 regulation sources
What to know in Delaware.
Delaware’s net-metering rules require applicable safety/performance standards and compliance with the electric supplier’s interconnection tariff.
Delaware Electric Cooperative publishes its own solar interconnection process and meter installation information.
The regulatory definitions include Delmarva accounts; the cooperative has separate instructions. Check your specific provider and the latest rule amendments instead of assuming identical credit treatment statewide.
Who provides electricity here?
Narrow possible delivery utilities by ZIP or confirm yours
Find the delivery utility on your electric bill first. A retail supplier or on-site solar seller may be a different company; your delivery utility handles the local grid connection.
Explains distribution versus competitive supply and Delmarva jurisdiction; municipal providers and Delaware Electric Cooperative need their own contacts.
Electric Consumer Information — Delaware Division of the Public AdvocateBrowse 41 reported provider records in Delaware
41 records
Electric delivery utilities 11
- Delmarva PowerInvestor Owned · EIA 5027
Reported counties (3)
Kent, New Castle, Sussex
- Delaware Electric CooperativeCooperative · EIA 5070
Reported counties (2)
Kent, Sussex
- City of Dover - (DE)Municipal · EIA 5335
Reported counties (1)
Kent
- City of Newark - (DE)Municipal · EIA 13519
Reported counties (1)
New Castle
- Town of Middletown - (DE)Municipal · EIA 12478
Reported counties (1)
New Castle
- City of Milford - (DE)Municipal · EIA 12540
Reported counties (2)
Kent, Sussex
- Town of Smyrna - (DE)Municipal · EIA 17457Residential service not separately reported
Reported counties (2)
Kent, New Castle
- City of Seaford- (DE)Municipal · EIA 16852Residential service not separately reported
Reported counties (1)
Sussex
- City of Lewes - (DE)Municipal · EIA 10935Residential service not separately reported
Reported counties (1)
Sussex
- New Castle Municipal Serv CommMunicipal · EIA 13424Residential service not separately reported
Reported counties (1)
New Castle
- Town of Clayton - (DE)Municipal · EIA 3732Residential service not separately reported
Reported counties (1)
Kent
Electricity suppliers / retail marketers 28
- Reliant Energy Northeast LLCRetail Power Marketer · EIA 57037
Reported counties (0)
County coverage not reported in this source
- Direct Energy ServicesRetail Power Marketer · EIA 54820
Reported counties (0)
County coverage not reported in this source
- CleanChoice Energy, Inc.Retail Power Marketer · EIA 58951
Reported counties (0)
County coverage not reported in this source
- SmartEnergy Holdings, LLCRetail Power Marketer · EIA 58956
Reported counties (0)
County coverage not reported in this source
- Residents Energy, LLCRetail Power Marketer · EIA 59809
Reported counties (0)
County coverage not reported in this source
- Inspire Energy Holdings, LLCRetail Power Marketer · EIA 59310
Reported counties (0)
County coverage not reported in this source
- WGL Energy Services, Inc.Retail Power Marketer · EIA 20659
Reported counties (0)
County coverage not reported in this source
- Palmco Power DE, LLCRetail Power Marketer · EIA 61349
Reported counties (0)
County coverage not reported in this source
- Rushmore Energy, LLCRetail Power Marketer · EIA 59807
Reported counties (0)
County coverage not reported in this source
- Just Energy Solutions Inc.Retail Power Marketer · EIA 4100
Reported counties (0)
County coverage not reported in this source
- Spark Energy, LPRetail Power Marketer · EIA 17710
Reported counties (0)
County coverage not reported in this source
- Constellation NewEnergy, IncRetail Power Marketer · EIA 13374
Reported counties (0)
County coverage not reported in this source
- Nordic Energy Services, LLCRetail Power Marketer · EIA 59088
Reported counties (0)
County coverage not reported in this source
- Think Energy, LLCRetail Power Marketer · EIA 65310
Reported counties (0)
County coverage not reported in this source
- Clearview Electric Inc.Retail Power Marketer · EIA 58974
Reported counties (0)
County coverage not reported in this source
- XOOM Energy Delaware, LLCRetail Power Marketer · EIA 58632
Reported counties (0)
County coverage not reported in this source
- Discount Power Inc - (CT)Retail Power Marketer · EIA 59993
Reported counties (0)
County coverage not reported in this source
- Ambit Energy Holdings, LLCRetail Power Marketer · EIA 56212
Reported counties (0)
County coverage not reported in this source
- NextEra Energy Services, LLCRetail Power Marketer · EIA 7279
Reported counties (0)
County coverage not reported in this source
- RPA Energy, Inc.Retail Power Marketer · EIA 63695
Reported counties (0)
County coverage not reported in this source
- Park Power LLCRetail Power Marketer · EIA 59797
Reported counties (0)
County coverage not reported in this source
- Stream Energy Delaware, LLCRetail Power Marketer · EIA 61201
Reported counties (0)
County coverage not reported in this source
- Titan Gas LLCRetail Power Marketer · EIA 59065
Reported counties (0)
County coverage not reported in this source
- Atlantic Energy LLCRetail Power Marketer · EIA 60583
Reported counties (0)
County coverage not reported in this source
- ResCom Energy, LLCRetail Power Marketer · EIA 59848
Reported counties (0)
County coverage not reported in this source
- Greenlight Energy Inc.Retail Power Marketer · EIA 59810
Reported counties (0)
County coverage not reported in this source
- First Point Power, LLCRetail Power Marketer · EIA 59793
Reported counties (0)
County coverage not reported in this source
- MidAmerican Energy Services, LLCRetail Power Marketer · EIA 59931
Reported counties (0)
County coverage not reported in this source
On-site energy sellers 2
- Tesla Inc.Behind the Meter · EIA 57313
Reported counties (0)
County coverage not reported in this source
- Sunrun Inc.Behind the Meter · EIA 59647
Reported counties (0)
County coverage not reported in this source
No matching providers in this reporting snapshot. Check the official directory above.
Official logo sources · Initials indicate a logo not yet verified. Municipal-owner emblems identify the owning city or village.
Source: EIA-861 final 2025 detailed data · Reporting year 2025. Names and reported counties are historical survey data, not a live address lookup. A county can have several providers, and a listing does not mean every resident can choose it. Small/territory-only reports may not identify residential service separately.
Credits, rebates, and other opportunities.
Check the program’s scope before comparing savings: a tax exemption, equipment rebate, loan and electricity-export payment provide different benefits. Funding, utility territory, income, equipment and installation dates can limit eligibility. Amounts below are not added together or deducted from product prices.
Build a project incentive checklist for Delaware
2 state & utility records
Green Energy Program
Delaware DNREC · Solar
Grants can offset eligible renewable-system installation costs for Delmarva Power customers.
- Benefit
- Grant schedule and available funding apply; cooperative/municipal customers use their own renewable programs.
- Who may qualify
- Delmarva Power site and eligible renewable equipment under Green Energy Program regulations.
- Before applying or buying
- Confirm application/reservation process before installation and submit through the official Green Grant Delaware route.
Solar + Storage Pilot Program
Delaware DNREC · Storage
Pilot guidelines effective August 11, 2026 cover new solar-plus-storage and eligible storage added to existing solar.
- Benefit
- Residential: $250/kWh, maximum $6,000, and no more than 50% of eligible storage cost.
- Who may qualify
- Delmarva Power & Light electric customer; battery paired with qualifying new or existing solar and all Green Energy Program conditions.
- Before applying or buying
- Review the appropriate application pathway with DNREC before committing; grant approval and available funds control payment.
No matching records in this reviewed selection. Check the official program sources for more options.
Delmarva, cooperative and municipal renewable incentives are different programs. The state grant and storage pilot below are for qualifying Delmarva customers. This is a curated starting list, not every local incentive or a guarantee of available funding.
Federal programs in every state
The federal rules below apply nationally. State-administered federal rebates still require the local program to be operating and your project to meet its conditions.
Residential Clean Energy Credit (25D)
Closed / endedNot available for new property placed in service after December 31, 2025. Do not assume a federal 30% credit for a new 2026 solar, wind, geothermal or battery installation.
IRS: Residential Clean Energy CreditEnergy Efficient Home Improvement Credit (25C)
Closed / endedThe federal home-efficiency credit, including qualifying heat-pump improvements, ended for property placed in service after December 31, 2025.
IRS: Energy Efficient Home Improvement CreditHOMES / High-Efficiency Electric Home Rebates
Eligibility / funding conditionsFederally funded home-energy rebates operate through participating local administrators. Check the state program’s launch, current funding, eligible measures and application requirements. This is not a blanket rooftop-solar rebate.
DOE: Home Energy Rebates ProgramWeatherization Assistance Program
Eligibility / funding conditionsIncome-eligible households may receive approved home-weatherization services through local agencies. This is assistance delivered through a program, rather than an automatic reimbursement for equipment you buy.
DOE: How to Apply for Weatherization Assistance
Permits and electrical codes.
The Board of Electrical Examiners says the Fire Commission determines the applicable NEC version and that inspections also use applicable local building codes.
Use the adoption authority linked below to check the effective date and amendments. The newest published NEC edition is not automatically the edition adopted for your project.
Before ordering equipment.
Two conversations. Keep their answers separate.
Track permits and interconnection in a project
- Confirm the permit authority
Ask the city, county, or state electrical office which building, electrical and fire-code editions and amendments apply to this address. Request the solar/ESS permit checklist and inspection sequence.
- Confirm the utility process
Give the serving utility your proposed capacity, inverter model and operating mode. Ask which interconnection application, tariff, export limits, meter changes and written operating authorization apply.
- Document the exact equipment
Collect model-specific certificates, installation manuals, a one-line diagram, site/roof plans, and the battery/inverter pairing if storage is proposed. Check them with the permit authority and utility before ordering.
For the general permitting and inspection process: DOE: Permitting and Inspection for Rooftop Solar .
UL, NEMA, and system acceptance.
Different evidence, different scope.
Check the exact model and approved system configuration. A UL 1973 battery listing or UL 9540A fire-test report does not, by itself, establish UL 9540 certification of a complete storage system.
Open the UL & NEMA referenceScope and system-level certification: UL Solutions: Energy Storage System Testing and Certification .
Official sources.
Open the source for current forms, eligibility, tariffs, and adopted rules. Utility-specific examples apply to that provider.
