Mid-Atlantic Solar Guide 2026: Maryland, Pennsylvania, West Virginia, Delaware

The Mid-Atlantic region is one of the most financially compelling solar markets in the country — and one of the least understood. While buyers in sunnier states focus on weather, Mid-Atlantic homeowners benefit from some of the strongest incentive programs in the U.S., including active SREC markets, near-universal Energy Community bonus ITC zones, and electricity rates that drive fast payback periods even with modest sun resources.

This guide compares Maryland, Pennsylvania, West Virginia, and Delaware side by side — four states that share a geographic corridor, face similar grid conditions, and each have distinctive incentive structures that can make a $5,000–$15,000 difference in your total system cost.

Quick comparison: 2026 Mid-Atlantic solar landscape

State	Peak Sun Hours/Day	Avg. Electricity Rate	Top Incentive	Net Metering Type	Typical Payback
Maryland	4.2–4.6	$0.16–$0.18/kWh	SREC market ($60–$90/MWh)	Retail rate	6–9 years
Pennsylvania	4.1–4.5	$0.14–$0.18/kWh	AEC market + Energy Community 40% ITC	Retail rate	9–15 years
West Virginia	4.2–4.6	$0.10–$0.13/kWh	Energy Community 40% ITC (most counties)	Retail rate	9–14 years (EC), 14–18 years (standard)
Delaware	4.2–4.6	$0.13–$0.16/kWh	DNREC $0.25/W rebate + SREC + zero sales tax	Retail rate	9–12 years

All four states have retail-rate net metering — meaning you're credited at the full retail price for every kWh you export to the grid. This is a critical foundation: buyers in neighboring states like Tennessee or Indiana face export rates of $0.03–$0.06/kWh, not $0.14–$0.18/kWh. Net metering quality alone can mean a 5–7 year payback difference on an identical system.

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Maryland: The SREC Powerhouse

Maryland is the best incentive state in the Mid-Atlantic for most buyers — and arguably one of the best in the entire country outside of Connecticut and Massachusetts. The combination of an active SREC market, a full property tax exemption, a full sales tax exemption, and retail-rate net metering creates a stacking structure that few states can match.

Federal 30% ITC (40% in Energy Community Counties)

All Maryland buyers qualify for the 30% federal Investment Tax Credit on the full installed cost of their solar system. Buyers in Allegany County (Cumberland area) and Garrett County (Deep Creek area) qualify for the Energy Community 40% ITC bonus — these western Maryland counties are designated Energy Communities due to coal mining heritage.

For a typical 9 kW system at $27,000 installed:

• 30% ITC: $8,100 reduction → $18,900 net
• 40% Energy Community ITC (Allegany/Garrett): $10,800 reduction → $16,200 net

Maryland SREC Market: 15 Years of Ongoing Income

Maryland's Solar Renewable Energy Credit (SREC) market is the most distinctive feature of the state's incentive stack. Every 1,000 kWh your system produces generates one SREC, which you sell through a broker on the open market.

2026 Maryland SREC details:

• Current price: $60–$90/MWh ($60–$90 per SREC)
• A 9 kW system in Baltimore generates approximately 10,800 kWh/year = ~10.8 SRECs/year
• At $75/SREC average: $810/year in SREC income on top of energy bill savings
• SREC income over 15 years: approximately $12,150 (at current prices, subject to market fluctuation)

To participate, register your system with PJM-GATS (the regional tracking system) after commissioning. Your installer should handle this or guide you through the process. Top SREC brokers for Maryland: Sol Systems, SRECtrade, Flett Exchange, and Joule Assets.

The net system cost for a 9 kW Baltimore system:

• Installed cost: $27,000
• Federal ITC (30%): −$8,100
• Net system cost: $18,900
• Maryland property tax exemption NPV (2.24% rate, 20 years): −$8,960 savings
• Sales tax exemption (6%): −$1,620 savings (at purchase)
• SREC income over 10 years (conservative $65/SREC): −$7,020
• Effective 10-year net cost: approximately $2,300

This is one of the most favorable solar economics in the Mid-Atlantic region. Baltimore buyers commonly see 6–9 year simple payback periods on installed cost after incentives — comparable to Connecticut and Massachusetts.

Property Tax Exemption (100%, §9-203)

Maryland law (MD Tax-Property Code §9-203) exempts the full assessed value added by a solar energy system from property tax. This exemption lasts indefinitely as long as you own the system. At Maryland's average property tax rate of approximately 2.24% of assessed value per year, a $25,000 net installed system increases assessed value by roughly $20,000 on average — generating $448/year in avoided property taxes, or $8,960 over 20 years. This exemption applies county-wide without any application required (it is built into the state assessment code).

Sales Tax Exemption (6%)

All residential solar equipment purchases in Maryland are exempt from the state's 6% sales tax under MD Tax-General Code §11-238. For a $27,000 installed system where panels, inverter, and racking typically represent about 40–50% of installed cost ($10,800–$13,500), the savings are $648–$810. Some counties also have local sales taxes that may separately apply.

Maryland Net Metering

Maryland has retail-rate net metering (100% of retail value credited per kWh exported) for residential systems up to 2 MW. Utilities covered: BGE (Baltimore Gas & Electric), Pepco (Washington DC suburbs), Delmarva Power (Eastern Shore), and Potomac Edison (Western Maryland). Annual true-up in April — unused credits roll forward monthly at retail rate and settle at avoided-cost rate at true-up. Right-size your system to 90–95% of annual consumption to avoid losing excess credits at year-end true-up.

MEA CleanEnergy Grant (Low-Income)

The Maryland Energy Administration's CleanEnergy Grant Program provides grants of $1,000–$5,000 for income-qualified households (up to 400% of federal poverty level for $1,000; up to 80% FPL for the full $5,000). Income-qualified buyers also receive priority in the SREC incentive program.

Maryland Stacking Example

Baltimore City 9 kW system (30% ITC territory):

• Installed cost: $27,000
• Federal ITC (30%): −$8,100
• Net after ITC: $18,900
• Sales tax exemption (6% × $27,000): −$1,620 (received at purchase)
• SREC income (10 years, $65/SREC avg): −$7,020
• Effective cost after 10 years: approximately $10,260
• Annual energy savings at $0.165/kWh × 10,800 kWh: $1,782/year
• Simple payback on effective cost: approximately 5.8 years

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Pennsylvania: Energy Community Opportunity + AEC Income

Pennsylvania doesn't have Maryland's SREC market or New Jersey's powerful incentive stack, but two factors make it a more compelling solar market than most buyers realize: the Western Pennsylvania Energy Community 40% ITC zones, and the Philadelphia metro's high electricity rates.

Federal 30% ITC (40% in Energy Community Counties)

Pennsylvania buyers in standard territory qualify for 30% ITC. However, a substantial portion of Pennsylvania qualifies for the Energy Community 40% ITC — primarily in the western and central PA coal regions.

Energy Community counties in Pennsylvania (40% ITC eligible): Fayette, Greene, Cambria, Clearfield, Indiana, Armstrong, Jefferson, Elk, Clarion, Lawrence, Mercer, Venango, Crawford, McKean, Potter, Clinton, Centre (portions), Luzerne (portions), Lackawanna (portions), and other designated fossil fuel employment communities. Use the IRS Energy Community Census Tract Mapper (arcgis.com) to verify your specific address.

Pennsylvania AEC Market

Pennsylvania operates an Alternative Energy Certificate (AEC) market for Tier I solar energy, analogous to Maryland's SREC market but less robust. Current 2026 AEC prices: $25–$50/MWh (compared to MD's $60–$90/MWh). A 9 kW system generates approximately 10,800 kWh/year = ~10.8 AECs. At $35/AEC average: $378/year, or $5,670 over 15 years.

Important note: AEC prices are significantly lower than SREC prices in Maryland and New Jersey. Buyers in border counties near Maryland should compare both states' long-term incentive economics before making a final decision.

Pennsylvania Net Metering

Pennsylvania has retail-rate net metering for residential systems under the Alternative Energy Portfolio Standards Act. All major utilities are covered: PECO (Philadelphia metro), PPL (Lehigh Valley, Allentown, Scranton area), West Penn Power (Pittsburgh eastern suburbs), Penn Power (western PA), Met-Ed (eastern PA), and Penelec (northwestern PA). Annual April true-up applies.

No statewide property tax exemption: This is Pennsylvania's key disadvantage vs. neighboring Maryland and Delaware. Property taxes on the increased assessed value of a solar installation are not exempted at the state level. Some municipalities have local exemptions — check with your county assessor's office.

Pennsylvania Utility-by-Utility Overview

Utility	Territory	Rate	Net Metering
PECO	Philadelphia, Montgomery Co., Delaware Co.	$0.16–$0.19/kWh	Retail rate, annual April true-up
PPL	Lehigh Valley, Allentown, Wilkes-Barre	$0.14–$0.17/kWh	Retail rate, annual true-up
West Penn Power	Pittsburgh eastern suburbs	$0.14–$0.16/kWh	Retail rate
Penn Power	Western PA, Erie area	$0.12–$0.15/kWh	Retail rate
Met-Ed	Eastern PA, Reading area	$0.14–$0.16/kWh	Retail rate
Penelec	Northwestern PA	$0.12–$0.15/kWh	Retail rate

PECO territory (Philadelphia) is Pennsylvania's strongest solar market: $0.16–$0.19/kWh rates combined with 4.4–4.6 peak sun hours/day produce the fastest paybacks in the state.

Pennsylvania Stacking Examples

Philadelphia (PECO, 30% ITC, $0.175/kWh):

• 9 kW installed at $27,000
• ITC (30%): −$8,100 → $18,900 net
• AEC income (10 years, $35/AEC): −$3,780
• Effective 10-year cost: $15,120
• Annual energy savings: 10,800 kWh × $0.175 = $1,890/year
• Simple payback: approximately 8 years

Pittsburgh Energy Community (40% ITC, $0.14/kWh):

• 9 kW installed at $27,000
• ITC (40% Energy Community): −$10,800 → $16,200 net
• AEC income (10 years): −$3,780
• Effective 10-year cost: $12,420
• Annual energy savings: 10,800 kWh × $0.14 = $1,512/year
• Simple payback: approximately 8.2 years (Energy Community bonus makes Pittsburgh competitive with Philadelphia despite lower rates)

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West Virginia: Energy Community Changes Everything

West Virginia has the weakest state-level solar incentive stack in the Mid-Atlantic — no state income tax credit, no property tax exemption, no sales tax exemption. But one federal incentive completely transforms WV's solar economics: the Energy Community 40% ITC bonus applies to the vast majority of West Virginia counties due to the state's coal mining heritage.

Energy Community 40% ITC: The WV Game-Changer

West Virginia is among the top states nationally for Energy Community census tract coverage. The IRA designates communities as Energy Communities based on fossil fuel employment and unemployment factors — and virtually every WV county with significant coal mining heritage qualifies.

West Virginia counties with confirmed 40% ITC Energy Community coverage (partial list): Boone, Logan, McDowell, Mingo, Wyoming, Kanawha, Fayette, Nicholas, Webster, Raleigh, Mercer, Monroe, Greenbrier, Pocahontas, Randolph, Tucker, Monongalia (portions), Preston, Barbour, Taylor, Upshur, Lewis, Gilmer, Calhoun, Clay, Braxton, Nicholas — check arcgis.com for your specific census tract.

For a buyer who qualifies, the 40% ITC converts a standard $27,000 installation into:

• ITC (40%): −$10,800
• Net cost: $16,200 before any state incentives

Combined with retail-rate net metering from AEP Appalachian Power or Mon Power, this makes WV solar economically viable despite the state's low electricity rates.

AEP Appalachian Power Net Metering

AEP Appalachian Power (largest WV utility) offers retail-rate net metering for residential systems under 25 kW — credits at the full retail rate ($0.11–$0.13/kWh) for every kWh exported. Annual true-up in April with rollover of unused credits monthly.

Mon Power (subsidiary of FirstEnergy, serves Northern WV) also offers retail-rate net metering with similar terms.

Rural co-op warning: West Virginia has several rural electric cooperatives (Harrison Rural, Pocahontas, Appalachian Power's rural networks) that are NOT subject to the state's net metering statute for IOUs. Verify your utility before signing.

USDA REAP for West Virginia Farms and Rural Businesses

WV's agricultural and rural business sector benefits significantly from USDA REAP. Grant amounts of 25–50% of installed cost (combined grant + guaranteed loan up to 75%) make farm solar paybacks of 3–5 years achievable, especially when combined with the Energy Community 40% ITC.

WV farm REAP + Energy Community stack example:

• Farm solar system: $50,000 installed (25 kW commercial system)
• USDA REAP grant (40% typical): −$20,000
• Energy Community 40% ITC on full cost: −$20,000
• Net cost: $10,000
• Annual energy and/or diesel savings: $4,000–$8,000/year
• Farm payback: 1.2–2.5 years

West Virginia Stacking Examples

Charleston (Kanawha County Energy Community, AEP, 40% ITC):

• 9 kW installed at $27,000
• Energy Community ITC (40%): −$10,800
• Net cost: $16,200
• Annual savings at $0.12/kWh × 10,800 kWh: $1,296/year
• Simple payback: approximately 12.5 years

Morgantown (Mon Power, standard 30% ITC, $0.13/kWh):

• 9 kW installed at $27,000
• ITC (30%): −$8,100
• Net cost: $18,900
• Annual savings at $0.13/kWh × 10,800 kWh: $1,404/year
• Simple payback: approximately 13.5 years

Beckley (Raleigh County Energy Community, AEP, 40% ITC):

• 9 kW installed at $27,000
• Energy Community ITC (40%): −$10,800
• Net cost: $16,200
• Annual savings: $1,188/year ($0.11/kWh)
• Simple payback: approximately 13.6 years (lower rates remain the key challenge)

West Virginia's paybacks are longer than its Mid-Atlantic neighbors due to lower electricity rates. However, for buyers who qualify for Energy Community status, the economics are materially better than the standard 30% ITC case — and REAP-eligible farms can achieve compelling short paybacks.

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Delaware: Zero Sales Tax Advantage + Active SREC Market

Delaware is the smallest state in the Mid-Atlantic but punches above its weight on solar incentives. The combination of zero state sales tax, a cash rebate program, a Delaware SREC market, and a 9-year property tax exemption makes Delaware a more compelling solar market than its size suggests.

Zero State Sales Tax

Delaware has no state sales tax — a straightforward advantage that saves $1,200–$2,200 on the equipment portion of a typical 9–10 kW solar installation compared to buying in Pennsylvania (6% sales tax) or New Jersey (6.625%). For buyers near the Delaware-Pennsylvania border, this alone is a meaningful incentive to install in Delaware.

DNREC Cash Rebate

The Delaware Department of Natural Resources and Environmental Control (DNREC) administers a cash rebate for residential solar:

• Standard rebate: $0.25 per watt installed
• Income-qualified rebate: $0.50 per watt installed

For a 9 kW system: $0.25/W × 9,000 W = $2,250 standard rebate (paid within 60–90 days of commissioning). Income-qualified buyers receive $4,500. The rebate is funded through Delaware's Renewable Energy Portfolio Standard — check DNREC's website (dnrec.delaware.gov) for current funding availability, as rebate programs can exhaust their annual allocation.

Delaware SREC Market

Delaware participates in PJM-GATS's regional SREC tracking system, and Delaware-generated SRECs can be sold into the Delaware SREC market. Current 2026 Delaware SREC prices: $40–$70/MWh (lower than Maryland's $60–$90/MWh due to Delaware's smaller market and lower RPS obligation). SREC brokers active in Delaware include Sol Systems and SRECtrade.

Delaware 9 kW SREC income at $55/SREC average: approximately $594/year, or $8,910 over 15 years.

Property Tax Exemption (9 Years)

Delaware's 26 Del. C. §5202 provides a 9-year property tax exemption on the assessed value added by a solar installation. Delaware's property tax rate varies by county (approximately 0.55–0.68% of assessed value) — on a $20,000 value addition, this exemption saves approximately $990–$1,224 over 9 years. The exemption is less valuable than Maryland's permanent exemption but is still a meaningful incentive.

Delaware Net Metering

Delaware has retail-rate net metering (26 Del. C. §1014) for residential systems under 25 kW. Utilities covered: Delmarva Power (the largest utility, serving most of the state), Delaware Electric Cooperative (southern Delaware). Annual true-up applies with monthly rollover.

Delaware Stacking Examples

Wilmington (Delmarva Power, 30% ITC, $0.14/kWh):

• 9 kW installed at $27,000
• Federal ITC (30%): −$8,100
• DNREC rebate: −$2,250
• Net cost: $16,650
• SREC income (10 years, $55/SREC avg): −$5,940
• Zero sales tax (vs. PA): saves $810 at purchase
• 9-year property tax exemption: ~$1,122 savings
• Effective 10-year cost: approximately $8,778
• Annual energy savings at $0.14/kWh × 10,800 kWh: $1,512/year
• Simple payback on effective cost: approximately 5.8 years

Dover (Delmarva Power, $0.155/kWh):

• 9 kW installed at $27,000
• Federal ITC: −$8,100
• DNREC rebate: −$2,250
• Net cost: $16,650
• Annual energy savings: $1,674/year
• Simple payback without SREC income: approximately 9.9 years
• Simple payback with SREC income: approximately 6.5 years

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Energy Community 40% ITC: The Mid-Atlantic Opportunity Map

The Inflation Reduction Act's Energy Community bonus ITC is one of the most powerful incentives available to Mid-Atlantic buyers — and many buyers don't know they qualify.

Energy Community coverage by state:

• West Virginia: Majority of counties qualify (coal mining heritage — nearly statewide eligibility)
• Pennsylvania: Western PA coal belt + Luzerne/Lackawanna/Scranton area + Fayette, Greene, Cambria, Clearfield, Indiana, Armstrong, Jefferson, Elk, Clarion, and others
• Maryland: Allegany and Garrett counties (western MD coal communities)
• Delaware: Limited coverage (some New Castle County industrial census tracts may qualify — verify at arcgis.com)

To verify Energy Community eligibility for your specific address:

1. Go to the IRS Energy Community Map (search "IRS Energy Community mapper" on Google or direct URL via arcgis.com)
2. Enter your address to confirm your census tract status
3. Document the result for your tax preparer — you'll claim the 40% rate on Form 3468 (commercial) or Form 5695 (residential)

If you qualify for 40% ITC, your net system cost drops by an additional 10% of the full installed cost. On a $27,000 system, that's an extra $2,700 — the equivalent of a significant state rebate program.

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Net Metering Policy Comparison

All four Mid-Atlantic states have retail-rate net metering, but policy stability and future risk vary:

State	Net Metering Rate	Policy Basis	2026 Risk Level
Maryland	Retail rate	COMAR 20.50.08 + PSC order	Low — long-established, politically stable
Pennsylvania	Retail rate	AEPS Act 213 + PUC orders	Low — established statutory/regulatory basis
West Virginia	Retail rate	PSC order	Medium — administratively set, less stable than statutory
Delaware	Retail rate	26 Del. C. §1014 (statutory)	Low — statutory protection

Maryland and Delaware have the most stable net metering policy — based on statutory authority or long-established regulatory precedent. West Virginia's retail NEM is administratively set, meaning a future PSC order could modify it without legislative action (similar to California's 2022 NEM 3.0 change). This is not an imminent risk in 2026 but worth noting for long-term planning.

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SREC Market Comparison: MD vs. PA (AEC) vs. DE

Program	State	Current Price	Market Liquidity	15-Year Value (9 kW)
SREC	Maryland	$60–$90/MWh	High	$9,720–$14,580
AEC	Pennsylvania	$25–$50/MWh	Moderate	$4,050–$8,100
SREC	Delaware	$40–$70/MWh	Moderate	$6,480–$11,340

Maryland's SREC market is the most liquid and highest-priced in the Mid-Atlantic. If you're in a border area between MD and PA or MD and DE, the SREC income difference can be substantial over a 15-year system life. A buyer in Frederick County, MD (SREC at $75/MWh average) generates approximately $4,500 more in SREC income over 15 years than an equivalent buyer in Cumberland County, PA (AEC at $35/MWh average) — before any other state incentive differences.

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Mid-Atlantic Ranked Recommendations

For most Mid-Atlantic homeowners:

#1 Maryland — Best overall. Active SREC market ($60–$90/MWh), full property and sales tax exemptions, 6–9 year paybacks in Baltimore/DC suburbs. Clear leader for buyers who qualify.

#2 Delaware — Best value surprise. Zero sales tax + DNREC rebate + active SREC market produces paybacks competitive with Maryland despite lower electricity rates. Ideal for buyers in the Wilmington–Dover corridor.

#3 Pennsylvania (Philadelphia metro) — Best within PA. PECO's $0.16–$0.19/kWh rates and the AEC income program create 8–10 year paybacks. Energy Community buyers in Pittsburgh and western PA close the gap with the 40% ITC bonus.

#4 West Virginia — Best for Energy Community farms and rural buyers. Standard residential paybacks of 12–15 years make WV challenging for most homeowners. But farms with REAP + Energy Community 40% ITC achieve 1–3 year paybacks — some of the fastest agricultural solar economics in the country.

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What to Do Before Getting Quotes

1. Verify Energy Community status at the IRS mapper (arcgis.com) — a 40% vs. 30% ITC difference worth $2,700+ on a typical system.
2. Check your utility — confirm you have retail-rate net metering (not avoided-cost) and verify your annual true-up date.
3. Register for SREC/AEC tracking — your installer should handle PJM-GATS registration, but confirm it's in the contract.
4. Get 3+ quotes — use the compare solar quotes guide to ensure apples-to-apples comparison.
5. Use the calculators — run your numbers through the Solar ROI Calculator and Solar Financing Calculator before meeting with installers.

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Frequently Asked Questions

Which Mid-Atlantic state has the best solar incentives in 2026? Maryland offers the strongest overall incentive stack for most homeowners: SREC income ($60–$90/MWh), 100% permanent property tax exemption, full 6% sales tax exemption, and retail-rate net metering combine to produce 6–9 year paybacks in the Baltimore–Washington corridor. Delaware is the best value-per-dollar surprise in the region.

Does West Virginia have good solar incentives? West Virginia has no state-level incentives, but the Energy Community 40% federal ITC applies to the majority of WV counties (coal mining heritage). This transforms the economics for buyers who qualify — converting a $27,000 system to $16,200 net before energy savings. For farms, adding USDA REAP achieves 1–3 year paybacks.

What is the Maryland SREC program and how does it work? SREC stands for Solar Renewable Energy Credit. Every 1,000 kWh your Maryland solar system produces generates one SREC, which you sell on the open market through a broker. Current 2026 prices are $60–$90 per SREC. A 9 kW Baltimore system generates approximately 10–11 SRECs per year, earning $600–$990 annually in SREC income on top of your electricity bill savings.

Does Pennsylvania have a property tax exemption for solar? Pennsylvania does not have a statewide property tax exemption for solar installations — a significant gap vs. neighboring Maryland and Delaware. Some individual municipalities may have local exemptions; check with your county assessor. This is Pennsylvania's primary disadvantage compared to Maryland, where the full added property value is permanently exempt.

Is Delaware solar worth it without a major state incentive? Yes — Delaware's combination of zero sales tax ($810–$2,200 savings), DNREC cash rebate ($2,250 for most buyers), an active SREC market ($40–$70/MWh), 9-year property tax exemption, and retail-rate net metering creates a competitive incentive stack. Wilmington and Dover buyers typically see 6–10 year paybacks, comparable to many Northeast states.

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Next Steps

• Maryland buyers: Start with the Maryland Solar Incentives Guide and register your interest with SREC brokers before your system is installed.
• Pennsylvania buyers: Check your Energy Community status first, then see the Pennsylvania Solar Incentives Guide.
• West Virginia buyers: Verify Energy Community eligibility and explore USDA REAP eligibility through the West Virginia Solar Incentives Guide.
• Delaware buyers: See the Delaware Solar Incentives Guide for program details.
• Compare all 50 states: The Solar ROI by State guide shows payback periods and 25-year savings for every U.S. state.
• Regional comparisons: See the Northeast Solar Guide and Southeast Solar Guide for neighboring-region comparisons.
• Calculate your personal ROI: Use the Solar ROI Calculator and Solar Financing Calculator to model your specific home's economics.
• Assess your home: Before getting quotes, use the home solar assessment guide to evaluate your roof, shade, and electrical readiness.

The Mid-Atlantic region rewards buyers who understand their state's specific incentive stack. Maryland's SREC market and Delaware's zero-tax advantage are genuinely powerful — but only if you know to ask for them in your installer contracts and system design.