Cost Guide · Updated April 2026
How Much Do Solar Panels Cost in Maryland? (2026)
The average solar panel system costs $2.64 per watt in Maryland as of April 2026. For the average 13.86 kW system, that's $36,609 before incentives, with prices ranging from $31,118 to $42,100. After Maryland's state and county incentives, the effective cost is significantly lower — and the average homeowner saves $72,859 over 25 years.
Cost by System Size in Maryland
Most installers price solar by the watt, so a larger system costs more in total but less per watt. Here's how costs break down across common system sizes in Maryland, using the April 2026 EnergySage average of $2.64/watt.
| System Size | Gross Cost | After MD Incentives* | Est. Annual Savings | Best For |
|---|---|---|---|---|
| 5 kW | $13,200 | ~$5,700 | $800–$1,000/yr | Small home, low usage |
| 7 kW | $18,480 | ~$10,980 | $1,100–$1,400/yr | Average MD home |
| 8 kW | $21,120 | ~$13,620 | $1,300–$1,600/yr | Above-average usage |
| 10 kW | $26,400 | ~$18,900 | $1,600–$2,000/yr | High-usage home or EV |
| 13.86 kW (MD avg.) | $36,609 | ~$29,109 | ~$2,400/yr | Average MD household |
| 15 kW | $39,600 | ~$32,100 | $2,500–$3,000/yr | Large home, high usage |
* "After MD Incentives" reflects Maryland MSAP grant (where eligible), SREC value, and sales tax exemption only. County credits (up to $5,000) can reduce cost further. Federal ITC expired December 2025.
How to estimate your system size: Divide your annual electricity usage (kWh) by 1,200. If your home uses 12,000 kWh per year, you likely need a 10 kW system. Your installer will refine this using satellite data and your actual usage history.
Cost by City in Maryland
Solar costs vary across Maryland cities because of differences in average utility rates, system sizes, local permitting, and market competition. Cities served by Pepco typically need larger systems and see higher savings — cities on BGE or Potomac Edison tend to have slightly lower costs per system.
| City | Avg. Cost/Watt | Avg. System Size | Gross Cost | 25-yr Savings Est. |
|---|---|---|---|---|
| Gaithersburg | $2.58/W | 14.33 kW | $36,972 | $91,140 |
| Silver Spring | $2.61/W | 12.83 kW | $33,419 | $77,541 |
| Bethesda | $2.57/W | 14.26 kW | $36,611 | $77,778 |
| Rockville | $2.58/W | 14.09 kW | $36,369 | $89,279 |
| Bowie | $2.60/W | 14.42 kW | $37,540 | $77,375 |
| Annapolis | $2.65/W | 14.77 kW | $39,128 | $75,923 |
| Glen Burnie | $2.69/W | 14.20 kW | $38,178 | $79,104 |
| Frederick | $2.63/W | 13.80 kW | $36,294 | $37,057 |
| Baltimore | $2.94/W | varies | varies | varies |
| Washington DC | $2.50–$3.50/W | 11.39 kW | ~$28,500 | $57,402 |
Why Frederick has lower 25-year savings despite similar costs: Frederick is served by Potomac Edison at ~$0.14/kWh — a lower electricity rate than Pepco or BGE. Lower rates mean smaller bill savings, even with the same system size. Gaithersburg's high savings are driven by Pepco's ~$0.18–$0.20/kWh rate, making each solar kWh worth more.
What's Included in the Installation Cost
When you get a solar quote, the price per watt covers the complete installed system — not just the panels. Here's what you're paying for:
What's NOT included: Battery storage is a separate cost — adding a Tesla Powerwall or similar battery typically adds $10,000–$18,000. Roof repairs or replacements before installation are also separate. Some quotes may not include monitoring system hardware — ask your installer to confirm.
7 Factors That Affect Your Solar Cost in Maryland
Your quote will be higher or lower than the state average depending on these variables. Understanding them helps you evaluate whether a quote is competitive.
1. System Size
The largest cost driver. Larger systems cost more in total but less per watt. A 15 kW system might cost $2.50/W while a 5 kW system costs $2.80/W from the same installer — bulk pricing applies.
2. Panel Brand & Efficiency
Premium brands (SunPower, Panasonic, LG) cost more per watt but produce more power per square foot. Budget-tier panels cost less but may require more roof space for the same output. QCELLS and Canadian Solar offer solid mid-range value.
3. Inverter Type
String inverters (single unit, lower cost) vs. microinverters (one per panel, higher cost but better performance with partial shading). Microinverters typically add $1,000–$3,000 to the total but perform better on complex roofs.
4. Roof Condition & Complexity
A simple south-facing roof with no shading is cheapest to install on. Multiple roof angles, dormers, tile roofing, or partial shading add labor and complexity. Roofs needing repair before installation add cost.
5. City & County
Permitting fees and processes vary by county. Montgomery County has a permit fee waiver for solar. Some county permitting departments process faster than others, affecting installer labor costs. Local incentives also vary by county.
6. Installer You Choose
Prices vary 15–25% between installers for the same system. Getting at least 3 quotes is essential. Cheaper isn't always better — compare warranties, equipment brands, and customer reviews alongside price.
7. Timing & Seasonal Demand
Spring and summer are peak installation seasons in Maryland — installers are busier and may be less negotiable on price. Winter installations can sometimes yield better pricing as demand softens.
8. Battery Storage Add-on
Adding battery backup (Tesla Powerwall, Enphase, Franklin) adds $10,000–$18,000 to your system cost but provides grid independence. Maryland's RCES Grant (up to $5,000) is available for qualifying battery installations through June 2026.
What You Actually Pay After Maryland Incentives
The gross installation cost is never what you end up paying. Maryland's incentive stack can significantly reduce your effective net investment. Here's a realistic example for an income-eligible homeowner in a county with a tax credit:
| Cost Item | Example: 10 kW System |
|---|---|
| Gross Installation Cost | $26,400 |
| Maryland Solar Access Program (MSAP — if eligible) | − $7,500 |
| County Property Tax Credit (e.g. Montgomery Co.) | − $5,000 |
| Maryland Sales Tax Exemption (6%) | − $1,100 |
| SREC Income (10 years estimated) | − $3,000 |
| Effective Net Cost | ~$9,800 |
Important 2026 note: The 30% federal residential solar tax credit (ITC) expired December 31, 2025. The example above does not include it. The Maryland Solar Access Bridge Fund may partially replace its value for qualifying homeowners — check with the Maryland Energy Administration for current details. For income-ineligible homeowners without county credits, the effective cost will be higher.
Solar Payback Period in Maryland
The payback period is how long it takes for your electricity savings to equal your net installation cost. After payback, you're generating effectively free power for the remaining life of your panels.
| City | Utility | Rate (approx.) | Est. Payback |
|---|---|---|---|
| Gaithersburg | Pepco | ~$0.18–$0.20/kWh | ~8.3 years |
| Bethesda | Pepco | ~$0.18/kWh | ~6.9 years |
| Rockville | Pepco | ~$0.18/kWh | ~8.3 years |
| Silver Spring | Pepco/BGE | ~$0.20/kWh | ~9.6 years |
| Bowie | BGE | ~$0.165/kWh | ~10–11 years |
| Annapolis | BGE | ~$0.165/kWh | ~8–10 years |
| Glen Burnie | BGE | ~$0.165/kWh | ~7–9 years |
| Frederick | Potomac Edison | ~$0.14/kWh | ~11–13 years |
After payback, Maryland's 25-year panel warranties mean most homeowners enjoy 12–18 years of deeply discounted or free electricity. When you factor in Maryland's historically 2–3% annual electricity rate increases, the long-term savings compound significantly.
How to Get the Best Price on Solar in Maryland
1. Get at Least 3 Quotes
This is the single most impactful thing you can do. Prices for the same system from different licensed Maryland installers typically vary 15–25%. A quote of $2.40/W vs $3.00/W on a 13 kW system is a $7,800 difference for identical hardware. Use our free quote form to connect with multiple pre-vetted local installers.
2. Compare Cost Per Watt, Not Total Cost
Installers will often propose different system sizes. To compare apples to apples, always divide the total price by the system size in watts to get your cost per watt. Maryland's competitive market average is $2.64/W — anything below $2.50/W is excellent, $3.00+/W warrants scrutiny unless premium equipment is specified.
3. Check the Equipment Tier
Ask for the panel brand, model, and efficiency rating with every quote. Premium panels (SunPower, Panasonic, LG) justify a higher per-watt price. If two quotes are priced similarly but one uses Tier-1 panels and the other uses a lesser-known brand, the Tier-1 quote is likely better value long-term.
4. Ask About All Available Incentives
A good installer proactively walks you through every incentive you qualify for — MSAP, Bridge Fund, county credits, SREC enrollment, sales tax exemption — and includes their handling of all paperwork in the proposal. If an installer doesn't mention these, ask specifically. It's a meaningful sign of local expertise.
5. Verify Maryland MHIC License & NABCEP Certification
Maryland requires solar installers to hold a Home Improvement Contractor (MHIC) license — this gives you formal recourse if something goes wrong. NABCEP certification is the industry's highest professional standard. Both are required to qualify customers for Maryland's $1,000 clean energy grant and MSAP program.
Pro tip: Use cost per watt as your primary comparison metric. Check it against Maryland's current market average of $2.64/W (EnergySage, April 2026) and the range of $2.50–$3.20/W. If a quote falls outside this range, ask the installer to explain why before proceeding.
Frequently Asked Questions
How much do solar panels cost in Maryland in 2026? ▾
The average cost of solar panels in Maryland is $2.64 per watt as of April 2026, according to EnergySage. For the average system size of 13.86 kW, the gross cost is approximately $36,609 before incentives, with prices ranging from $31,118 to $42,100. After Maryland's MSAP grants, SRECs, sales tax exemption, and county credits, the effective cost can be substantially lower. Solar prices in Maryland have declined about 42% over the past decade.
What size solar system does the average Maryland home need? ▾
The average Maryland home needs a 13.86 kW solar system according to EnergySage. This is above the national average due to Maryland's relatively high electricity consumption. System size varies by city: Pepco-served areas (Gaithersburg, Bethesda, Rockville) typically need 14+ kW due to higher usage, while lower-rate areas like Frederick may need smaller systems. Divide your annual kWh consumption by 1,200 to estimate your needed system size.
How long is the solar payback period in Maryland? ▾
The average payback period in Maryland is 7–10 years depending on city, utility rate, and available incentives. Cities on Pepco (Gaithersburg, Bethesda, Silver Spring) see the shortest payback periods — some as low as 6.9 years — due to higher electricity rates. After payback, homeowners typically enjoy 15–18 years of effectively free electricity within the 25-year panel warranty period.
What factors affect the cost of solar panels in Maryland? ▾
The main factors are system size, panel brand and efficiency tier, inverter type (string vs. microinverters), roof complexity and condition, your city and county (affecting permitting fees and available incentives), and the installer you choose. Prices between installers for the same system typically vary 15–25%, so getting at least 3 quotes is essential. Use cost per watt as your primary comparison metric.
Is solar worth it in Maryland in 2026 without the federal tax credit? ▾
Yes. Even with the federal ITC expired, Maryland's state incentives — MSAP grants up to $7,500, Solar Access Bridge Fund, SRECs, sales tax exemption, county tax credits up to $5,000, and one of the nation's best net metering policies — make solar financially viable for most homeowners. EnergySage estimates the average Maryland homeowner saves $72,859 over 25 years. The payback period is somewhat longer than in prior years, but long-term savings remain substantial, especially in Pepco-served cities with higher electricity rates.
How much does a solar battery add to the cost in Maryland? ▾
Adding a battery storage system to your Maryland solar installation typically adds $10,000–$18,000 depending on the brand and capacity. Popular options include the Tesla Powerwall (~$10,000–$12,000 installed), Enphase IQ Battery, and Franklin Home Power. Maryland's RCES Grant (up to $5,000 for qualifying battery installations) can offset some of this cost — apply through the MyMEA portal before June 5, 2026, or when FY27 funding opens.
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