RESIDENTIAL

Solar Energy for Homeowners

Discover Where Your Home is Wasting Energy and How to Fix It

Energize Delaware offers two options to help homeowners assess and improve energy efficiency: the Home Performance with ENERGY STAR® (HPwES) program and the Home Energy Check-Up & Counseling (HEC2) service. Explore each to find the right fit for your home.

All About Solar

An In-Home Energy Check-Up is a fast, easy way to increase the energy efficiency of your home and help you start saving immediately. An Energy Advisor will come to your home and check the condition of its insulation, heating and air-cooling system, lighting, appliances and more to identify simple ways to help save energy and money. The process for the check-up includes:

How Solar Works

Solar panels use silicon to convert sunlight into electricity. This electricity starts as Direct Current (DC) and is converted to Alternating Current (AC) by an inverter so it can be used in homes and buildings. During the day, panels power your home first, and excess electricity is sent to the grid. Utilities often credit you for the surplus via net metering.

Is Solar Affordable?

Yes—costs have dropped significantly over the last decade, and financing options plus federal, state, and utility incentives make solar more accessible. If rooftop solar isn’t feasible, community solar is a great alternative.

Is Solar Safe?

When properly installed and grounded, solar panels are safe. Local inspections usually ensure compliance. Visit our Consumer Protection page for installer tips.

Why Install Solar?

Solar lowers electric bills, increases property value, and reduces your carbon footprint. If you’re grid-connected, net metering lets you earn credits for excess electricity.

Installation Options

Most systems are roof-mounted, but ground-mounted systems are available for larger properties or where rooftops aren’t suitable.

How is Solar Measured?

Panels are rated in watts (W), with most being ~300W. Systems are usually measured in kilowatts (kW). Example: 20 panels x 300W = 6,000W or 6kW.

Battery Backup

Add a battery to store solar power for night or outages. Costs range from $12,000–$22,000 and may qualify for federal tax credits.

Solar Installation Process

Choose an installer, confirm your utility’s interconnection process, and use tools like PVWatts or Delmarva calculators to verify system capacity. See our Delaware Solar Installers page

Is Solar for Me?

Solar panels are very popular in Delaware! They work year-round, even on cloudy days. Delaware receives more solar exposure than Pennsylvania, New Jersey, and parts of Maryland. However, performance depends on your specific property. Factors like roof angle, shading, and direction can influence energy output.

Before You Install – Compare your solar potential to your past 12 months of electricity usage. Use the tools below to calculate energy production estimates. These are estimates, not guarantees.

PVWatts Calculator – Offered by the National Renewable Energy Laboratory, this tool estimates solar production based on your system’s specs (size, tilt, location). Enter your installation address, adjust settings, and review your estimated annual solar output. 

Try the PVWatts Calculator Here

Delmarva Power Solar Calculator – Delmarva Power customers can use this calculator to estimate production, cost, savings, and payback. Enter your address or log in to your account to get started.

Try the Delmarva Solar Calculator

Is Solar Available in My Area?

You can install solar panels on your roof or property. Be sure your utility allows interconnection before proceeding.

Delmarva Power

  • Offers net metering and requires interconnection applications via the Green Power Connection team.
  • All applications must go through their online portal.
  • Tools Available on Their Site:
    • Heat Map: Shows installed/pending system capacity
    • Hosting Capacity Map: Displays remaining grid capacity
    • Restricted Circuit Map: Identifies areas with limited or no interconnection
  • If you’re in a restricted area, contact Delmarva’s Green Power Connection team.

Delaware Electric Cooperative (DEC)

  • Allows net metering for systems meeting their technical standards.
  • Applications differ for systems below and above 100 kW.
  • After installation, DEC installs a net meter to track production.
  • Some areas are restricted—DEC provides a map of eligible (green), conditional (yellow), and restricted (red) zones.
  • Contact DEC directly to verify your area. DEC’s Community Solar Program also offers access to solar for $10/month.

Delaware Municipal Electric Corporation (DEMEC)

  • Represents 8 municipalities: Newark, New Castle, Middletown, Clayton, Smyrna, Milford, Lewes, and Seaford.
  • Interconnection is available in many of these areas; contact your local utility directly for guidance.
  • The Residential Municipal Green Energy Program offers grants for solar to customers contributing to the Municipal Green Energy Fund. Check DEMEC’s website for participating municipalities.

City of Dover

  • Solar interconnection applications are governed by the Electric Service Handbook (Section 3 & 4).
  • The Electric Engineering Division reviews all applications and may require a pre-interconnection study.
  • Contact info is available on the Utility Contact Information page.

DEC Community Solar Program

  • Residential members can access solar for an additional $10/month.
  • Commercial members can purchase blocks of renewable energy.
  • Learn more at DEC’s Community Solar Program site.

Consumer Protection Tips

As solar has become more popular and accessible, so has solar advertising and sales activity. Solar can be a great investment, but it’s more important than ever to be an informed consumer. These tips will help you navigate solar offers and avoid common pitfalls.

Tip #1: Always Compare Multiple Quotes
Get at least three quotes before choosing a solar provider. This gives you a chance to compare equipment, financing options, and contract terms—and positions you to negotiate better deals.

Tip #2: Understand Your Financing Options
Whether you purchase, finance, lease, or sign a Power Purchase Agreement (PPA), your choice impacts which incentives you can access and how your system affects your long-term finances. If you own your system, you may qualify for federal tax credits and can sell SRECs. Leased systems typically exclude you from those benefits.

Tip #3: Know the Length and Terms of Your Contract
Before signing, ask:

  • When will payments begin?
  • Will payments increase?
  • Are there buyout options?
  • What happens at the end of the contract?
  • Can the system be transferred if you sell your home?


Tip #4: Pick a Reputable Company

  • Read online reviews
  • Ask for references
  • Confirm how long they’ve operated in Delaware
  • Know whether you’re speaking to the actual company or a subcontractor

Tip #5: Watch for Common Misinformation

Be cautious of:

  • Claims of being from your utility company
  • Deadlines that sound urgent or forced
  • “Get paid to go solar” sales pitches

Verify all claims with your electric provider, tax advisor, or official solar resources.

Tip #6: Confirm Your Incentives
Estimates for incentives (like tax credits) are just that—estimates. Make sure you:

  • Qualify for the incentives listed
  • Know when and how incentives are issued
  • Are aware of application steps required to claim them


Tip #7: Understand the Cost Per Watt
Comparing quotes? Use this formula:

  1. Multiply system size in kW by 1,000 to convert to watts
    Example: 6.5 kW x 1,000 = 6,500 watts

  2. Divide total system cost (before incentives) by wattage
    Example: $19,100 / 6,500 watts = $2.94/watt

  3. Compare across quotes for value—but also factor in experience, warranties, and efficiencyle.

Contact the Delaware Division of the Public Advocate
Advocating for fair utility rates and services:


Always do your homework. A little time upfront can save you thousands—and ensure your solar experience is smooth and worthwhile.

Owning vs. Leasing Solar

  • Purchasing Solar Panels – Buying a solar system is a long-term investment that offers significant savings over time. You can either pay upfront or finance through a loan. One key metric to consider is the payback period—the time it takes for your electricity savings, SREC earnings, and incentives to equal your system’s cost. Most homeowners see a payback in 7–10 years. With systems lasting 25+ years, that’s a decade or more of pure savings. You own the panels and the SRECs. You’re eligible for tax credits, rebates, and grants. You’re also responsible for any maintenance (though some installers offer service plans).
 
  • Solar Leasing – A lease allows you to go solar with little or no upfront cost. The solar provider installs and owns the system, and you make fixed monthly payments to use the power it generates. Think of it like leasing a car. Be sure to understand the contract duration and whether your payments will increase over time. The third-party provider owns the equipment and SRECs. You typically won’t qualify for most incentives. Maintenance is handled by the provider.

 

  • Selling Your Home? If you lease, selling your home can get tricky. Buyers must either assume the lease or negotiate new terms, which may complicate the sale.
 
  • Low-to-Moderate Income Solar Program – The State of Delaware Division of Climate, Coastal and Energy offers funding to eligible residents that may cover part or all of a solar installation. Click here for more information.

Energize Delaware Residential Solar Loan Program

We offer low-interest loans to help finance customer-owned solar systems. Loan amounts range from $5,000 to $30,000, covering up to 70% of the total project cost. The loan term is 10 years, with a 3.9% interest rate.

To qualify for the Energize Delaware Solar Loan, applicants must meet the following criteria:

  • Delaware Resident: Applicants must be a resident of Delaware.
  • Property Ownership: The applicant must be the property owner and the property must be owner-occupied. Eligible properties include detached or attached one to four unit residences (such as duplexes and townhomes). Commercial properties are not eligible.
  • Minimum Credit Score: A minimum credit score of 650 is required.
  • Debt-to-Income Ratio: The maximum monthly debt-to-income ratio is 50%. Applicants must provide proof of income based on their employment status. Acceptable forms of proof include:
    • Employed: Submit the past three months of pay stubs.
    • Self-Employed: Provide a copy of your most recent tax return.
    • Retired: Submit Social Security Statements, Pension Statements, Retirement Account Statements, Annuity Statements or other forms of retirement income.

 

Solar Loan Application Process: To apply for the Energize Delaware Solar Loan, property owners must start the application online at energizedelawareloans.org. Applicants can authorize their contractor to update certain steps, such as system and project cost details, but contractors won’t have access to sensitive information.

 

Application Steps:

Part One: Must be submitted before work begins. If the system is interconnected before Part One is approved, the project will be disqualified. Once approved, both the applicant and contractor will receive an Approval Letter, allowing installation to begin.

Part Two: Must be submitted after system interconnection and within six months of Part One approval. After review of the Project Completion Documents, funds will be disbursed to the contractor, and the applicant will receive an email with payment details.

Apply Here

Community Solar

Community solar refers to large-scale solar projects—typically 1 to 4 megawatts—where electricity is shared among multiple participants. Unlike rooftop systems, these installations are often located on landfills, fields, or warehouse rooftops, and they allow residents and businesses to benefit from solar without installing equipment on their property.

Also known as shared solar, roofless solar, or solar gardens, community solar opens access to clean energy for a wider range of users

Why Choose Community Solar?

  • Homeowners: Ideal for homes with roof issues, limited sun, or financing restrictions.
  • Renters: No roof? No problem. If you move within the same utility area, subscriptions may transfer.
  • Businesses: Subscribe regardless of property ownership. Compare offers, as larger commitments may include cancellation fees or longer terms.

Participation Models

  • Ownership Model: Buy a portion of the array and earn credits for its output—just like owning rooftop solar, but offsite.
  • Subscription Model: Subscribe to a share of the output and receive bill credits. This is the most common setup. Credits reduce your utility bill, and although billing is often separate, some programs now offer consolidated billing.

Cost of Participation

Cost varies by provider, project size, and subscription type. You’ll earn credits based on the actual solar production, which may fluctuate month to month.

Questions to Ask Before Subscribing

  • What is the contract term?
  • Are there cancellation fees?
  • Can I transfer if I move?
  • What is the estimated savings?
  • Will I get one bill or two?

Who Owns Community Solar Projects?

Ownership varies:

  • Utilities may operate projects and offer voluntary subscriptions.
  • Special Purpose Entities (SPEs) allow individuals to invest and benefit from tax incentives.
  • Nonprofits may run projects for their communities.


The asset owner retains rights; the developer handles planning and construction.

Community Solar in Delaware

  • Legalized in 2010, community solar expanded under Senate Bill 2 (2021).
  • Project size is capped at 4 MW.
  • Adoption is growing thanks to clearer rules and more incentives.

Ready to Join a Project?

  1. Review your annual electric usage.
  2. Confirm your utility allows community solar.
  3. Choose a subscription size carefully—oversubscribing won’t benefit you.

For Landowners

Community solar projects require 5–7 acres per MW (20–28 acres for a 4 MW site). Developers may approach you with lease opportunities.

Before signing, consult legal and tax professionals. Understand:

  • Lease duration and terms
  • Rights and responsibilities
  • Long-term land use implications