The nation's capital has some of the best solar incentives in the country.
| ☀️ Peak Sun Hours | 4.2 hrs/day (good — better than many northeastern states) |
| ⚡ Avg Electricity Rate | $0.146/kWh (EIA 2025 — 29% below U.S. average, but rates rising) |
| 🏠 Typical 6 kW System Cost | $20,300 after 30% Federal Tax Credit (ITC) + DC rebate |
| 📈 Payback Period | 7-9 years (with DC SUN rebate and SREC income) |
| 🔌 Net Metering | ✅ Available — full retail rate credit (Pepco net metering) |
| 💰 25-Year Total Savings | $58,000+ (estimate based on 4% annual electricity inflation + SREC income) |
Washington DC is actually one of the best places in the U.S. to go solar — despite what you might think about a dense urban area. Here's why:
The DC Sustainable Energy Utility (DC SEU), known as "DC SUN," offers a solar rebate program that can cover up to $10,000 of your installation cost. This is one of the most generous local rebates in the country. The exact amount changes annually, so check DC SEU's website for current offerings.
DC is part of the PJM Interconnection region, which includes several SREC (Solar Renewable Energy Credit) markets. Depending on market conditions, you can sell SRECs for $20-60 per MWh of solar production. For a 6 kW system producing ~7,500 kWh/year, that's an additional $150-450/year in income.
Pepco (Potomac Electric Power Company) is DC's main electric utility. Pepco offers net metering, allowing you to receive full retail rate credit for excess electricity sent to the grid. This makes solar economics much better than in states with "avoided cost" compensation.
The 30% Federal Investment Tax Credit (ITC) applies to DC solar installations through 2032. For a $29,000 system (before incentives), that's $8,700 back as a tax credit.
DC's rowhouses often have limited roof space. However:
The DC Sustainable Energy Utility (DC SEU) offers rebates for solar installations. The program details change annually, but typically:
DC is part of the PJM Interconnection region. While DC doesn't have its own SREC market, you may be able to sell SRECs in neighboring markets. The value varies by market conditions.
30% of total system cost (through 2032). Applies to equipment, installation, and permitting fees. The credit is non-refundable but can be carried forward to future tax years.
System size: 5 kW (14 × 350W panels, flat roof with tilt racking)
Roof direction: South-facing (optimal tilt via racking)
Electricity rate: $0.146/kWh (Pepco)
Annual production: ~6,500 kWh (NREL PVWatts estimate for Washington DC)
| Item | Amount |
|---|---|
| Annual solar production | 6,500 kWh |
| Value at retail rate ($0.146/kWh) | $949 |
| Estimated SREC income (if applicable) | $200-450 |
| Minus estimated degradation (Year 1 = 100%) | -$33 (0.5%/year) |
| Net annual savings (Year 1) | $1,116-1,366 |
Monthly savings: ~$93-114 | Yearly: $1,116-1,366
With electricity inflation at 4%/year and panel degradation at 0.5%/year:
Note: These are estimates. Actual savings depend on your specific electricity usage, roof orientation, shading, and future electricity rate changes.
DC's urban environment presents unique challenges — but also unique opportunities:
Solution: Even a 3 kW system (about 8-9 panels) can cover 40-60% of a typical DC home's electricity usage. With DC's incentives, the payback period is still short.
Solution: Modern microinverters or power optimizers can minimize the impact of partial shading. A solar professional can assess your specific shading conditions.
Solution: DC's Historic Preservation Review Board (HPRB) has approved many solar installations. Flush-mounted panels on rear-facing roofs are often permissible. Check with DC's Office of Zoning (DCOZ) for guidance.
If you can't install solar on your roof (or if you rent), community solar allows you to subscribe to a solar project in MD or VA and receive credits on your Pepco bill. This is a great option for DC renters.
Yes. Pepco (Potomac Electric Power Company) offers net metering in DC. You receive full retail rate credit for excess electricity sent to the grid, which can be used to offset electricity consumed at night or during winter months.
A typical 5 kW solar system in DC saves about $93-114/month, or $1,116-1,366/year (including potential SREC income). Over 25 years, total savings exceed $58,000 (assuming 4% electricity inflation and 0.5% annual panel degradation). Your actual savings depend on your electricity usage, roof direction, and local rate.
South-facing roofs capture the most annual sunlight in DC. Southeast/southwest-facing roofs capture about 92-95% of south-facing production. East/west-facing roofs capture about 80-85%. North-facing roofs are not recommended for solar in DC due to low winter sun angles.
Not necessarily. With net metering, you can use the grid as a "virtual battery" — sending excess summer production to the grid and drawing it back at night. However, battery storage is valuable if you want backup power during outages (which can happen in DC storms).
Yes! Through community solar, DC renters can subscribe to a solar project in MD or VA and receive credits on their Pepco bill. This allows you to support renewable energy and save on electricity without installing panels on your roof.
Our solar calculator gives you a personalized estimate based on your location, electricity usage, and DC's solar conditions. Takes 30 seconds, no email required.
Calculate My Solar Savings →Electricity rates: U.S. Energy Information Administration (EIA), Washington DC Electricity Profile 2025.
Solar production estimates: NREL PVWatts Calculator, using Washington DC weather data.
Net metering policies: Pepco DC net metering rules.
DC SUN rebate program: DC Sustainable Energy Utility (DC SEU) program details.
Federal tax credit: IRS Form 5695 instructions (2026 revision).
Disclaimer: These are estimates for planning purposes. Actual savings vary based on your specific home, utility, and installation costs. Consult a licensed solar installer for a precise quote.
The average cost of a residential solar system in Washington DC is $15,000-$25,000 before incentives (for a 6-10 kW system). After the 30% federal Investment Tax Credit (ITC), the net cost drops to roughly $10,500-$17,500. Actual costs vary based on roof complexity, panel brand, installer choice, and local permitting fees. Washington DC homeowners should get at least 3 quotes to compare pricing.
All U.S. homeowners qualify for the 30% federal Investment Tax Credit (ITC) through 2032. This credit reduces your federal taxes by 30% of your total system cost. In addition to the federal ITC, some states offer additional rebates, property tax exemptions, or sales tax exemptions on solar equipment. Check with your local utility and the Database of State Incentives for Renewables & Efficiency (DSIRE) for Washington DC-specific programs.
The typical solar payback period in Washington DC ranges from 7 to 12 years, depending on your electricity rate, system size, available incentives, and financing terms. After the payback period, your solar panels essentially produce free electricity for the remaining 15+ years of their 25-30 year lifespan. Higher electricity rates and strong sun exposure lead to faster payback periods.
Yes. According to a study by Lawrence Berkeley National Laboratory (LBNL), homes with solar systems sell for an average of $15,000-$25,000 more than comparable homes without solar. The exact premium depends on your location, system size, and age. Many states including Washington DC offer property tax exemptions for the added value from solar, so you won't pay higher taxes even though your home is worth more.
Solar works best on south-facing roofs with minimal shading, but east-west orientations can still produce 80-90% of optimal output. Key factors include: roof condition (should have 15+ years of life left), tilt angle (30-45 degrees ideal), and shading from trees or nearby buildings. A reputable installer will perform a free site assessment using satellite imagery to estimate your production potential before you commit to anything.