Solar Panel Cost in Maryland: $2.62/W, 10.4-Year Payback

Solar in Maryland costs about $20,960 for 8 kW at $2.62/W and pays back in roughly 10.4 years at 21.4¢/kWh with the federal credit at $0.

Updated September 2026 · Source: EIA Electric Power Monthly Table 5.6.A (July 2026 data) · next EIA update ~Oct 23

By SolarCostData Data Desk · Reviewed September 2026 · Corrections log

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Why this number

Solar panels in Maryland cost about $2.62 per watt — $20,960 for a typical 8 kW system — and pay back in roughly 10.4 years at the state’s 21.4¢/kWh average rate, with the 2026 federal credit at $0. Full-retail net metering is assumed; confirm with your utility.

Everything below uses Maryland’s real average residential electricity rate (21.4¢/kWh, EIA) and a production band of about 1,280 kWh per kW per year. Both are stated openly because they are the two inputs that decide the answer. These are estimates for sanity-checking a quote, not a quote.

Run it with your own numbers

Why Maryland’s payback lands where it does

Maryland’s average rate jumped about fourteen percent this year, from 18.83 cents per kilowatt-hour in July 2025 to 21.4 cents this July, pushing the state up to rank 14 nationally, one of the bigger climbs in the mid-Atlantic. That sharp rise, combined with a solid 1,280 kilowatt-hour-per-installed-kilowatt yield, brings the payback down to about 10.4 years. Baltimore Gas & Electric, the largest utility with over 1.2 million residential customers, actually charges well below the state average at 16.1 cents, a gap wide enough that BGE customers should expect a payback meaningfully longer than the 10.4-year statewide figure, while customers of pricier utilities like Pepco, near 18.7 cents, sit somewhere in between. Full retail net metering credits solar exports at whichever rate the customer’s own utility charges, so in a state with this much of a spread, the local number matters more than usual.

Electric utilities in Maryland

The state average hides real spreads between utilities. The largest residential utilities EIA-861 lists for Maryland, with each one’s own average bundled residential price (2024 — revenue ÷ sales, the audited annual figure, not this month’s tariff):

Your utility decides Maryland’s real number — the ZIP lookup finds it in three clicks; the 2024 annual utility averages above sit apart from the June-2026 monthly 21.4¢ state figure.

Maryland’s rate, the last 24 months

July 2025 → July 2026: 18.83¢ → 21.41¢. The rate tracker has every month against the US average.

An 8 kW system in Maryland, priced out

The $2.62/W used above comes from EnergySage marketplace quotes (August 2026). Those are quotes in a competitive online market, not signed contract prices.

Read that table with one caveat: $2.62/W is Maryland’s market average, and it is the input most likely to differ for you. A quote $0.50 per watt above or below the $2.62 used here moves the payback by roughly a year and a half in either direction.

How much sun Maryland actually gets

A kilowatt of panels in Maryland produces about 1,280 kWh a year on an unshaded, south-facing roof at a 20-degree pitch. Sites that swap Maryland’s 1,280 kWh for a single national average are how Arizona and Washington end up with identical paybacks despite a 1.6x real difference in output.

That figure is a five-point cluster around Maryland’s largest metro area, which keeps it representative of where most people actually live rather than of the state’s best site.

City-level figures for Maryland

We have separately modeled production for 1 Maryland city, and they are 0% apart — Baltimore at 1,343 kWh per kW against Baltimore at 1,343. Installed cost held at $2.62/W; paybacks use each city’s own utility tariff and export treatment where we have official EIA-861 data, which is why some differ sharply from this page’s state-average model.

• Baltimore — 1,343 kWh per kW, payback about 11.8 years (on its own utility’s tariff)

Those are real PVGIS-NSRDB location points, not the state figure scaled by guesswork. All Maryland and other city figures .

Two adjustments matter before you apply this to your own roof:

• Shading and orientation. The 1,280 kWh figure assumes an unobstructed south-facing array. A real Maryland roof — its own azimuth and pitch, a tree or a chimney — typically produces 10-25% less; this page models 90% of the ideal, so the 9,216 kWh/year above is already derated from 10,240. A genuinely unshaded south roof can adjust upward in the calculator.
• Year-to-year weather moves output by roughly ±5% either way.

How Maryland compares with the other 49

Maryland ranks 14th of 50 on electricity price and 13th on annual output value per kW installed — close enough that its rate is a fair proxy for its solar case, which is not true everywhere. Its immediate neighbors on price are Pennsylvania (21.7¢) just above and Ohio (19.4¢) just below.

Pennsylvania is Maryland’s closest comparable-rate analogue — 21.7¢/kWh, roughly 1,270 kWh per kW, and a payback within about a year of this one (10.2 vs 10.4 years). If you find Maryland quotes hard to sanity-check, Pennsylvania numbers are broadly transferable.

The export question worth asking your Maryland utility

Maryland credits exported power at the retail rate — full net metering — under Net metering; successor program mandated by HB 1532, in force since 2026-07-01, so a kilowatt-hour you send to the grid is worth the same as one you buy. That is the best case for solar economics, and it is why the payback above is what it is.

It is also the assumption most likely to change. Twenty-two states have already moved to net billing. If Maryland did the same on typical terms, this system would take about 17.2 years to pay back instead of 10.4 — 6.8 years’ difference from a policy change, with no change to the hardware. The households best placed for that day are the ones already storing their surplus, which is why what a home battery actually costs is worth knowing even while full retail holds.

HB 1532 directs the PSC to design a successor program. Net-metering enrolment will close in future and the successor export credit is not yet defined.

One limit worth knowing: this reflects investor-owned, state-regulated utilities; Maryland’s municipal utilities and co-ops are exempt in most cases and set their own terms.

SRECs and what else Maryland still offers

The 30% federal credit ended for systems completed after December 31, 2025, so it is $0 here as everywhere. What remains is state, utility and local — and it varies far more than the federal rule ever did.

Maryland Solar Access Program worth $7,500 — A $7,500 income-qualified grant. FY27 opened 29 July 2026 with a $10 million budget and, as of 24 August 2026, only 0.73% had been claimed — so funds are unusually available. Income caps run from $136,785 for a single person to $195,375 for a household of four.

Tax exemptions

Sales tax is exempt (6.0% state rate), which keeps roughly $1,258 off the upfront cost of the system modeled here.

Property-tax treatment is a local decision — some counties only. Ask your assessor before assuming either way.

If that list looks thin, it is — the solar incentives hub shows which states still put real money on the table, and where Maryland sits among them.

Is solar worth it in Maryland at 21.4¢/kWh?

Maryland is workable but unspectacular. At 21.4¢/kWh the rate does the lifting while 1,280 kWh per kW adds little, so your quoted price and your export terms decide the outcome rather than the geography.

Two numbers put that in context. At Maryland’s rate, the electricity an 8 kW system would produce is worth about $1,973 a year, so the system costs roughly 10.6 years of that output to buy outright — a simple division, before costs. The headline 10.4-year figure above is the full model: it additionally counts 2.5%/yr rate inflation, $150/yr of running costs and one inverter replacement, which is why the two differ slightly. And doing nothing is not free: 25 years of that same electricity, with rates rising at 2.5% a year, comes to about $67,393.

For a 15-year payback in Maryland — given its sunshine rather than a national average — the electricity rate would need to be about 15.6¢/kWh. Maryland is at 21.4¢, which is comfortably above that line.

Sources and method

• Electricity rate: U.S. Energy Information Administration, average price by state — EIA Table 5.6.A, July 2026 data (released Sep 2026). Rate shown is Maryland’s residential average.
• Production: PVGIS v5.2 with the PVGIS-NSRDB radiation database, 1,280 kWh/kW for a five-point cluster around Maryland’s largest metro, then the 90% real-roof factor; the assumptions, the ERA5 cross-check and the attribution are on the methodology page .
• Incentives: DSIRE — Database of State Incentives for Renewables & Efficiency, NC Clean Energy Technology Center. Verify current amounts and fund status before relying on them.
• Federal credit status: IRS, Residential Clean Energy Credit . See our 2026 energy tax credit guide .
• Payback model: shared with the solar savings calculator — 2.5%/yr utility inflation, 0.5%/yr degradation, federal credit $0.

Maryland’s rate (21.4¢, EIA Table 5.6.A, July 2026 data (released Sep 2026)), export regime, production factor, installed cost and programs were last verified on 25 September 2026; Maryland’s export credit resets on its tariff cycle and incentive budgets run out mid-year, so confirm current terms before acting. Not tax or financial advice.

Frequently asked questions

How we calculated this

Worked for Maryland: 8 kW × 1,000 × $2.62/W = $20,960 gross (federal credit $0, so net before state incentives); 9,216 kWh a year × the blended kWh value at 21.4¢ retail ≈ $1,973 year-1 saving; payback ≈ $20,960 ÷ $1,973 = 10.4 years with 2.5%/yr rate growth, 0.5%/yr degradation and one inverter replacement in the 25-year model.

Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.

States with a comparable tariff picture

• Why is my electric bill so high? — Splits a bill jump into weather, rate and usage — with Maryland’s own EIA rate history built in.
• Electricity rate tracker — Maryland’s last 24 months of EIA rates, charted against the US average.
• Find your rate by ZIP — Maryland averages hide utility gaps — look yours up from EIA-861 in three clicks.
• Net metering by state (2026 table) — Every state’s export regime with program, date and source — the rule behind Maryland’s payback.
• Solar panel cost in Pennsylvania — Same export regime at 21.7¢/kWh and a 10.2-year payback — the closest tariff comparison to Maryland.
• Solar panel cost in Delaware — Same export regime at 18.5¢/kWh and a 11.7-year payback — the closest tariff comparison to Maryland.
• Solar panel cost in New Jersey — Same export regime at 25.2¢/kWh and a 9.2-year payback — the closest tariff comparison to Maryland.