Key Takeaway
DC solar costs $2.85–$3.50/watt in 2026. Here's how to find the best solar companies in Washington DC and verify them before you sign.
— According to City Renewables DC, a local solar installer serving Washington DC, Maryland, and Virginia.
Washington DC is one of the strongest solar markets in the country — not because of the weather, but because of the economics. A typical 8–10 kW system here costs $22,000–$31,000 before incentives, and DC's SREC program can return $360–$400 per megawatt-hour of production, which means a well-sized system pays for itself faster than almost anywhere else on the East Coast. The federal residential 25D Investment Tax Credit expired on January 1, 2026, so the math has shifted — but the DC-specific incentives that remain are substantial enough that the best solar companies in Washington DC are still closing deals every week.
City Renewables is a working solar installer based in DC. We pull permits through the Department of Buildings, handle Pepco interconnection, and register every system with PJM-GATS so our customers capture SREC income from day one. This post draws on what we see in the field — the questions homeowners ask, the contract terms that cause problems later, and the process differences that separate a smooth installation from a frustrating one.
What Makes a Solar Company Worth Trusting in DC?
The best solar companies in Washington DC share four concrete traits: they hold a DC Home Improvement Contractor (HIC) license, they have direct experience with Pepco interconnection timelines, they register your system with PJM-GATS at installation rather than leaving it to you, and they provide a production estimate tied to your actual roof — not a national average. DC's permitting runs through the Department of Buildings, not a generic municipal office, and installers who don't know that workflow routinely cause 6–10 week delays that push back your first SREC generation. On r/washingtondc, homeowners have reported waiting four months for a system to go live because their installer submitted incomplete DOB paperwork. That's four months of SREC income gone. The credential check matters before you sign, not after.
Why the 2026 Market Looks Different — and Why DC Still Works
The 25D federal tax credit ending on January 1, 2026 removed what was, for many buyers, a $6,000–$9,000 line item from the payback calculation. That's real. But DC's own incentive stack is independent of federal policy, and it's still intact. The DC property tax exemption means the full added value of your solar installation — often $20,000–$30,000 — is excluded from your property tax assessment permanently. Net metering at full retail rate means every kilowatt-hour your panels produce offsets your Pepco bill at the same rate you'd pay to buy it. And the SREC market, which trades between $360–$400/MWh in mid-2026 against a Solar Alternative Compliance Payment ceiling of $440, continues to generate meaningful passive income. An 8 kW system in DC produces roughly 9,200 kWh per year — about 9.2 SRECs — worth $3,300–$3,700 annually at current prices. See our DC solar incentives 2026 guide for the full breakdown.
How Much Do Solar Companies in DC Charge?
DC solar installation costs in 2026 run $2.85–$3.50 per watt for a purchased system, which puts a typical 8–10 kW residential install at $22,800–$35,000 before any incentives. The spread is wide because roof complexity, panel brand, inverter type, and whether you add battery storage all move the number significantly. The table below shows how system size maps to cost and estimated annual SREC income at current market prices.
| System Size | Installed Cost Range | Est. Annual Production | Est. Annual SREC Income |
|---|---|---|---|
| 6 kW | $17,100–$21,000 | ~6,900 kWh | $2,480–$2,760 |
| 8 kW | $22,800–$28,000 | ~9,200 kWh | $3,310–$3,680 |
| 10 kW | $28,500–$35,000 | ~11,500 kWh | $4,140–$4,600 |
Production estimates use DC's average of 1,150 kWh per kW installed per year. SREC income calculated at $360–$400/MWh. Costs are for purchased systems; loan and lease structures change the monthly math but not the underlying system price.
One pattern we see consistently: homeowners who get a single quote pay more than those who get three. The range between the lowest and highest quote for the same system in DC can exceed $5,000. That's not because one company is dishonest — it's because overhead structures, panel sourcing, and crew costs vary. Get at least two quotes and make sure they spec the same panel wattage and inverter type so you're comparing the same thing.
What About Solar for All — Can You Get a Free System?
The DCSEU's Solar for All program ↗ provides no-cost solar installations to income-qualified DC residents, and it was recently expanded through a $62.45 million federal grant. If your household income is at or below 80% of the area median income, you may qualify for a fully subsidized rooftop system — including roof repairs needed to support the panels. The program is administered by the DC Sustainable Energy Utility and has a waitlist, so applying early matters. This is not a loan or a lease. Qualified participants own the system and keep the SREC income. If you think you might qualify, that's the first call to make before you talk to any installer.
For households above the income threshold, the DC Sustainable Energy Utility also runs Solar Advantage Plus, which offers rebates and low-interest financing for moderate-income homeowners. Check doee.dc.gov ↗ for current program status and income limits.
Does Roof Orientation or Shading Rule You Out?
A south-facing, unshaded roof at 30–35 degrees pitch is the textbook ideal — but most DC rowhouses don't have one, and that doesn't mean solar doesn't work. East- and west-facing roofs in DC still produce 80–90% of what a south-facing roof generates, because DC's diffuse light conditions and the SREC program's per-kWh value mean even a slightly reduced system is economically viable. Flat roofs, common on DC commercial buildings and some Capitol Hill rowhouses, allow panel tilt to be optimized at installation. Shading is the real variable. A mature tree canopy over the south face of your roof can cut production by 30–40%, which changes the payback math meaningfully. The right answer isn't to assume your roof doesn't work — it's to get a shade analysis done with actual production modeling before you commit. We run every site through shading software before we quote a system size.
And if you rent? DC's community solar program allows renters to subscribe to a share of an off-site solar array and receive bill credits. You don't need a roof at all. That's a separate conversation from rooftop installation, but it's worth knowing the option exists.
How to Verify a DC Solar Installer Before You Sign
This is where most homeowners skip steps they'll later wish they hadn't. Here's the verification sequence that protects you:
- Check the DC HIC license. The Department of Consumer and Regulatory Affairs (DCRA) maintains a public license lookup. Any company doing residential solar in DC needs a valid Home Improvement Contractor license. No license, no contract.
- Confirm they pull their own permits. Some installers subcontract permitting to third parties who don't know DC's DOB workflow. Ask directly: "Who submits the permit application, and what's your typical timeline from permit submission to approval?"
- Ask who handles SREC registration. PJM-GATS registration must happen at or shortly after installation. If the installer says "that's your responsibility," get it in writing and understand the process before you sign. Our DC SREC guide walks through exactly what registration involves.
- Verify Pepco interconnection experience. Pepco's interconnection queue has specific documentation requirements. Installers who work primarily in Maryland or Virginia sometimes underestimate DC-specific steps.
- Read the production guarantee language. A production estimate is not a guarantee unless the contract says so. Ask whether the installer will compensate you if production falls more than 10% below the estimate in year one.
- Check for liens. Some solar financing arrangements result in a UCC-1 lien on your home. If you plan to sell or refinance, this matters. Ask whether any financing product the installer offers places a lien on your property.
For a deeper look at red flags and contract terms, our post on how to choose a solar installer in DC covers the full checklist.
What City Renewables Does Differently
We're a DC-based installer, which means DC is not a secondary market for us — it's the only market we work in. Every permit we pull goes through the Department of Buildings. Every system we install gets registered with PJM-GATS before we close out the job, and we walk customers through the SREC account setup so they're not left figuring it out alone after we leave. We don't use door-to-door sales. We don't run a quote marketplace. When you contact us, you talk to the people who will actually design and install your system.
Our production estimates are built from site-specific shading analysis, not regional averages. We use 1,100–1,200 kWh per kW as our DC production range depending on orientation and shading, and we show our work in the proposal so you can see the assumptions. If a roof isn't a good candidate for solar, we say so. A system that underperforms is bad for the customer and bad for us — we'd rather lose a sale than install something that doesn't deliver.
Pricing is itemized. You'll see panel cost, inverter cost, racking, labor, permitting, and interconnection fees as separate line items. That makes it possible to compare our quote against others on equal terms.
Frequently Asked Questions
How much does solar cost in Washington DC?
A residential solar system in Washington DC costs $2.85–$3.50 per watt installed in 2026, putting a typical 8–10 kW system at $22,800–$35,000 before incentives. The federal 25D residential tax credit expired January 1, 2026, so that offset is no longer available for new purchases. DC's property tax exemption and SREC income remain in place and significantly affect the payback period.
Is solar worth it in Washington DC in 2026?
Solar is worth it in Washington DC in 2026 for most homeowners who own their roof and have reasonable sun exposure. The SREC program — currently trading at $360–$400 per MWh — generates $3,000–$4,500 per year for a typical 8–10 kW system, and full retail-rate net metering reduces Pepco bills dollar-for-dollar. Without the federal tax credit, payback periods have extended by 2–3 years compared to 2024, but the underlying economics remain positive for most DC properties.
What solar incentives are available in DC in 2026?
DC solar incentives in 2026 include: the SREC program (market value $360–$400/MWh), full retail-rate net metering through Pepco, a permanent property tax exemption on the added value of a solar installation, the Solar for All program for income-qualified residents, and Solar Advantage Plus financing for moderate-income households. The federal 25D residential Investment Tax Credit is no longer available for systems purchased after January 1, 2026.
How do I know if my roof is good for solar in DC?
A south-, east-, or west-facing roof with less than 20% shading during peak sun hours is generally viable for solar in DC. Flat roofs can be tilted at installation to optimize production. The most reliable way to assess your specific roof is a site visit with shading analysis software — production estimates based on satellite imagery alone can miss tree canopy and neighboring building shadows that significantly affect output.
What is the Solar for All program in DC?
Solar for All is a DCSEU program that provides no-cost rooftop solar installations to income-qualified DC residents — households at or below 80% of area median income. The program was recently expanded through a $62.45 million federal grant and includes roof repairs needed to support the installation. Participants own the system and keep all SREC income. There is a waitlist, so applying early is advisable.
Do I need to register my solar system with PJM-GATS to earn SRECs?
Yes. To earn DC SRECs, your system must be registered with PJM's Generation Attribute Tracking System (GATS). Registration should happen at or shortly after installation. Some installers handle this as part of their service; others leave it to the homeowner. Confirm in writing who is responsible for GATS registration before you sign a contract — unregistered systems cannot earn SREC income retroactively in most cases.
The Bottom Line
DC's solar market in 2026 rewards homeowners who do their homework before signing. The SREC program, net metering, and property tax exemption are real and substantial — but only if your system is properly installed, permitted, and registered. The difference between a smooth installation and a frustrating one usually comes down to whether your installer knows DC's specific workflows.
If you want to know whether your property is a good candidate, start with a Green Zone assessment. We'll look at your roof, your Pepco bills, and your shading situation and give you a straight answer on what a system would actually produce and cost.
