Maryland solar guide
DIY solar in Maryland: incentives, sizing, and the off-grid angle
Maryland quietly runs one of the most generous solar incentive stacks on the East Coast. Sales tax exemption on equipment, a flat $1,000 Residential Clean Energy Rebate, an active SREC market paying $50–$100 per credit, and a separate Energy Storage Tax Credit up to $5,000 for paired battery systems. Combined with the federal 26%, a typical $15K install can net back $8K–$10K across credits, rebates, and the SREC revenue stream.
Full retail net metering is required statewide — BGE, Pepco, Delmarva, and Potomac Edison all comply. There's no carrying-cost penalty for monthly surpluses; they roll forward.
Incentive snapshot
As of mid-2026. Verify on your state's energy website before relying on the dollar figures.
- Federal Residential Clean Energy Credit
- 26%
- State tax credit
- up to $1,000
- Sales tax exemption on solar equipment
- Yes
- Property tax exemption
- Yes
- Net metering
- Full retail (1:1)
- SREC market
- Active
- Average peak sun hours
- 4.4 hrs/day
- DIY-permit friendly
- Yes
Phases down: 30% through 2025 → 26% in 2026 → 22% in 2027 → 0% under current law. Dwellings only — vehicle/RV systems don't qualify.
Maryland Residential Clean Energy Rebate Program — flat $1,000 per residential PV install (not a tax credit, paid as rebate). Separate $5,000 Energy Storage Tax Credit available for paired batteries.
Your panels, batteries, and controllers ship sales-tax-free.
Adding solar doesn't bump your assessed value.
Full retail net metering required statewide. BGE, Pepco, Delmarva, and Potomac Edison all comply.
You can sell Solar Renewable Energy Credits — meaningful additional income.
Used to size your array — more sun hours = fewer panels needed for the same output.
Active SREC market — typical residential system earns $300–$700/year selling credits via brokers like SRECTrade.
DIY install angle in Maryland
Maryland counties vary on DIY permits. Montgomery and Howard counties require a licensed master electrician to pull the permit. Anne Arundel, Baltimore County, and the Eastern Shore are more flexible — homeowner permits with rough/final inspection are usually accepted.
The SREC angle is the under-appreciated part. Every MWh your system generates earns one SREC, and the Maryland SREC market has been trading in the $50–$100 range. A typical 6 kW residential system generates ~7 MWh/year, which means $350–$700/year in passive income on top of the energy savings. Brokers like SRECTrade and SOLSystems handle the paperwork for a small cut.
The Residential Clean Energy Rebate is a true rebate (not a tax credit) — you apply through Maryland Energy Administration after install, get a check back. Easy money but apply within 12 months of passing final inspection.
Sizing for Maryland sun
Maryland averages 4.4 peak sun hours/day — solid for the East Coast, with reasonable winter performance even in northern counties. Western Maryland (Allegany, Garrett) gets slightly less due to terrain shading; the Eastern Shore gets slightly more.
Humidity is the climate factor to design around. Outdoor-rated equipment is non-negotiable — IP65+ enclosures for controllers, marine-rated wiring in conduit, and avoid attic-mount installs in summer (heat + humidity destroys non-rated electronics).
For battery-paired residential systems chasing the $5K storage credit: the credit requires a minimum 3 kWh storage capacity and a usable warranty of 10+ years. Most LFP rack batteries qualify; entry-level AGM setups typically don't meet the warranty requirement.
Try the SolarControllerFinder builder
Enter your panels, battery bank, and load profile. We run the wiring math (NEC 690.7 cold- weather Voc derating, 690.8 ampacity) and recommend charge controllers that actually work together — ranked by price-to-trust, not by who paid us.
Open the builder →