Community solar vs rooftop solar: which delivers better returns for homes and businesses

More than 6 million U.S. households now have rooftop solar, yet roughly 77% of residential rooftops remain unsuitable for panels due to shading, orientation, structural limits, or renter status. Community solar, which lets subscribers buy or lease a share of an offsite array, has grown from under 1 GW in 2018 to over 7 GW of installed capacity by early 2026. Both paths reduce electricity bills and carbon footprints, but they differ sharply in cost structure, savings potential, accessibility, and risk. This guide breaks down each model so homeowners, renters, and small businesses can pick the one that fits their situation.

Why It Matters

Electricity costs in the United States rose roughly 29% between 2020 and 2025, pushing more households and businesses to explore solar as a hedge against rate increases. Rooftop solar has long been the default for homeowners with suitable roofs and upfront capital or financing access. But the market has shifted. Community solar programs now operate in 41 states plus Washington, D.C., and the model is expanding internationally in countries like the United Kingdom, Germany, and Australia. Choosing the wrong option can mean locking into a 20-year lease with limited savings or paying $25,000 upfront for panels that underperform on a north-facing roof.

For businesses, the stakes are higher. A 100 kW commercial rooftop system can cost $150,000 to $250,000 before incentives. A community solar subscription for equivalent capacity may require zero capital outlay and deliver 5% to 15% bill savings from day one. Understanding which model maximizes financial returns while matching operational constraints is critical for any organization with sustainability targets.

Key Concepts

Rooftop Solar

Rooftop solar places photovoltaic panels directly on a home or building. The system owner generates electricity onsite, offsetting grid consumption through net metering or net billing. Ownership models include outright purchase, solar loans, solar leases, and power purchase agreements (PPAs). System sizes typically range from 6 kW to 12 kW for residential and 25 kW to 500 kW for commercial installations.

The federal Investment Tax Credit (ITC) provides a 30% tax credit on system costs through 2032, dropping to 26% in 2033 and 22% in 2034. Many states layer additional rebates, performance-based incentives, or solar renewable energy certificates (SRECs) on top. Rooftop systems produce electricity for 25 to 30 years, though inverters typically require replacement at year 12 to 15.

Community Solar

Community solar (also called shared solar or solar gardens) lets multiple subscribers receive credit on their electricity bills from a single offsite solar installation, typically ranging from 1 MW to 5 MW. Subscribers do not need to own property or have a suitable roof. They either purchase a share of the project or subscribe to receive a percentage of its output.

Two primary models exist. In a subscription model, customers pay a monthly fee or receive credits at a discount to their utility rate, typically saving 5% to 20% on the solar portion of their bill. In an ownership model, customers buy panels or capacity in the array and receive credits for their share of production over 20 to 25 years. Community solar projects are typically developed by third-party companies like Nexamp, Arcadia, or Pivot Energy, which handle permitting, construction, and ongoing maintenance.

Net Metering vs Bill Credits

Rooftop solar owners with net metering export surplus electricity to the grid and receive credits at or near the retail rate. Community solar subscribers receive virtual net metering credits, where production from the offsite array is applied to their utility bill. The credit value varies by state and utility. In some states, community solar credits offset the full retail rate; in others, they offset only a portion. California's NEM 3.0 policy, implemented in 2023, significantly reduced export compensation for rooftop solar, narrowing the financial gap between rooftop and community options in that state.

Head-to-Head Comparison

Factor	Rooftop Solar	Community Solar
Upfront cost	$15,000 to $35,000 (before incentives)	$0 for subscriptions; $3,000 to $10,000 for ownership shares
Monthly savings	50% to 100% of electricity bill	5% to 20% of electricity bill
Payback period	6 to 12 years (purchased); never (leased)	Immediate savings (subscription); 8 to 15 years (ownership)
25-year net savings	$20,000 to $60,000	$5,000 to $15,000
Tax credit eligibility	30% ITC for system owners	30% ITC for ownership shares; none for subscriptions
Property requirement	Must own property with suitable roof	No property requirement
Maintenance responsibility	Owner handles repairs, cleaning, monitoring	Developer handles all maintenance
Portability	Stays with property	Transferable within utility territory
Property value impact	Increases home value by 3% to 4% on average	No property value impact
Contract length	System life (25+ years) or lease term (20 to 25 years)	Month-to-month or 12 to 25 year terms
Grid independence potential	Battery backup possible	No backup power capability

Cost Analysis

Rooftop Solar Economics

The average residential rooftop system in the United States costs $2.75 to $3.50 per watt installed, according to Lawrence Berkeley National Laboratory's 2025 Tracking the Sun report. A typical 8 kW system runs $22,000 to $28,000 before the 30% federal tax credit, bringing net cost to $15,400 to $19,600. Monthly loan payments on a 25-year solar loan at 5% to 7% interest typically range from $100 to $160.

For homeowners who can use the full ITC and live in states with strong net metering, rooftop solar delivers the highest lifetime returns. EnergySage data from 2025 shows median 25-year savings of $31,000 for purchased systems across all U.S. states. In high-rate states like Massachusetts, New York, and California, lifetime savings can exceed $50,000.

Commercial systems benefit from accelerated depreciation (MACRS) in addition to the ITC, shortening payback periods to 4 to 7 years for businesses with sufficient tax appetite. A 200 kW commercial installation at $2.20 per watt costs $440,000 before incentives but can generate $60,000 to $90,000 in annual electricity savings.

Community Solar Economics

Community solar subscriptions typically offer 5% to 15% guaranteed savings on the subscriber's electricity bill with no upfront payment. A household spending $150 per month on electricity might save $7.50 to $22.50 monthly, translating to $90 to $270 annually. Over a 20-year subscription, total savings range from $1,800 to $5,400.

Ownership-based community solar can yield better returns. Purchasing a 5 kW share in a community array might cost $8,000 to $12,000 after the ITC, generating bill credits worth $600 to $900 annually. At that rate, payback occurs in 9 to 15 years, with 25-year total savings of $7,000 to $14,000.

The trade-off is clear: rooftop solar delivers 2x to 5x higher lifetime savings but requires significant capital, a suitable roof, and maintenance responsibility. Community solar provides accessible, risk-free savings with much lower absolute returns.

Use Cases and Best Fit

Rooftop Solar Is Better When

You own a home with a south-facing roof in good condition. Maximum energy production requires unshaded exposure to the sun for at least 5 to 6 hours daily. Roofs less than 10 years old avoid the cost of reroof-before-install scenarios.

You can use the federal tax credit. The 30% ITC requires federal tax liability. Households or businesses that owe at least $5,000 to $8,000 in federal taxes can capture the full credit. Those with low tax liability may lose a significant portion of the incentive.

You want energy resilience. Pairing rooftop solar with a battery system (an additional $10,000 to $15,000 for a Tesla Powerwall or Enphase IQ Battery) provides backup power during grid outages. Sunrun reported that during Texas grid failures in 2025, its solar-plus-storage customers maintained power while neighbors went dark for days.

You plan to stay in your home for 10+ years. The full financial benefit of purchased rooftop solar accrues over time. Selling a home before payback reduces returns, though Zillow research shows solar homes sell for approximately 4.1% more than comparable non-solar homes.

Community Solar Is Better When

You rent your home or live in a condo or apartment. Roughly 36% of U.S. households are renters. Community solar is often the only solar option for these 44 million households. Arcadia reports that renters make up over 40% of its community solar subscriber base.

Your roof is unsuitable. Trees, north-facing orientation, age, or structural limits disqualify many roofs. The National Renewable Energy Laboratory estimates that only 23% of U.S. residential rooftops have suitable conditions for solar.

You want zero upfront cost and zero maintenance. Subscription-based community solar requires no capital investment, no insurance considerations, and no maintenance. For risk-averse households or businesses that prefer operational simplicity, subscriptions eliminate the complexity of system ownership.

Your business leases its space. Commercial tenants with 3 to 10 year lease terms rarely justify rooftop solar investments. Community solar subscriptions with month-to-month or short-term commitments align with lease timelines.

You are in a state with strong community solar policy. States like Minnesota, New York, Massachusetts, Illinois, and New Jersey have robust community solar programs with favorable credit rates. Minnesota alone has over 800 MW of community solar capacity serving more than 40,000 subscribers.

Decision Framework

Use this checklist to determine which model fits:

1. Do you own your building? If no, community solar is likely your only option.
2. Is your roof south-facing, unshaded, and under 10 years old? If no, community solar avoids a suboptimal installation.
3. Can you claim the 30% federal tax credit? If no, rooftop solar economics weaken substantially.
4. Do you have $15,000+ in available capital or financing access? If no, a zero-down community solar subscription provides immediate savings.
5. Will you remain at this location for 10+ years? If no, community solar's portability within your utility area is an advantage.
6. Do you need backup power during outages? If yes, only rooftop solar with battery storage provides this.
7. Is your primary goal maximum lifetime savings? If yes, purchased rooftop solar delivers 2x to 5x more savings than community solar.
8. Is your primary goal simplicity and accessibility? If yes, community solar subscriptions require no equipment decisions, no permits, and no maintenance.

For many households, the answer is not binary. A homeowner might install a smaller rooftop system to cover 60% of consumption and subscribe to community solar for the remainder. Businesses with multiple locations might use rooftop solar at owned facilities and community solar at leased ones.

Key Players

Rooftop Solar

• Sunrun operates as the largest residential solar installer in the United States with over 900,000 customers and 7 GW of installed capacity. Offers purchase, lease, and PPA options with optional battery storage.
• SunPower (now part of Complete Solaria) provides high-efficiency Maxeon panels with integrated monitoring. Focuses on premium residential and commercial installations.
• Tesla Energy combines solar panels, Solar Roof tiles, and Powerwall batteries in an integrated energy ecosystem. Direct-to-consumer model with online ordering.

Community Solar

• Nexamp develops and operates community solar projects across 16 states with over 2.5 GW in its portfolio. Offers no-cost subscriptions with guaranteed bill savings.
• Arcadia connects over 1.5 million members to community solar and clean energy programs. Platform-based model matching subscribers to local projects.
• Pivot Energy develops community solar and battery storage projects primarily in Colorado, Illinois, and Minnesota. Focuses on low-to-moderate income subscriber access.
• US Solar has developed over 350 MW of community solar across the Midwest, with dedicated programs for income-qualified subscribers.

Key Investors and Funders

• Generate Capital has invested over $8 billion in distributed energy infrastructure including community solar portfolios.
• Goldman Sachs Renewable Power provides project finance and tax equity for both rooftop and community solar developers.
• US Department of Energy funds community solar expansion through the National Community Solar Partnership, targeting 5 million households by 2025.

FAQ

Q: Can I do both community solar and rooftop solar at the same time? A: In most states, yes. You can install rooftop panels to cover a portion of your usage and subscribe to community solar for the rest. However, some utilities limit total net metering credits, so check your utility's policies before combining.

Q: What happens to my community solar subscription if I move? A: Most subscriptions are transferable within the same utility territory. If you move to a different utility's service area, you typically need to cancel and find a new project. Cancellation terms vary; some programs allow month-to-month exit, while others have early termination fees.

Q: Do community solar credits cover my entire electricity bill? A: Typically no. Community solar credits offset the supply or generation portion of your bill but not fixed charges, distribution fees, or demand charges. Depending on your utility rate structure, the generation portion represents 40% to 70% of your total bill.

Q: How does rooftop solar affect my property taxes? A: Most states exempt solar installations from property tax increases. At least 36 states have property tax exemptions for solar energy systems, meaning the added home value from solar panels is not taxed. Check your state's specific policies.

Q: Is community solar available in my area? A: Community solar programs operate in 41 states plus D.C. as of 2026. Availability depends on state policy, utility participation, and local project development. The EnergySage marketplace and your state's energy office can help identify active programs.

Q: Which option reduces carbon emissions more? A: Both displace the same amount of fossil fuel generation per kilowatt-hour produced. The difference lies in scale. A community solar project typically generates 1 MW to 5 MW, serving hundreds of subscribers, while a residential rooftop system generates 6 kW to 12 kW. Per subscriber, the environmental impact is comparable since credits are proportional to subscription size.

Sources

• Lawrence Berkeley National Laboratory. (2025). "Tracking the Sun: Pricing and Design Trends for Distributed Photovoltaic Systems in the United States." https://emp.lbl.gov/tracking-the-sun
• National Renewable Energy Laboratory. (2024). "Rooftop Solar Technical Potential for Low-to-Moderate Income Households." https://www.nrel.gov/docs/fy24osti/87878.pdf
• Solar Energy Industries Association. (2025). "U.S. Solar Market Insight Report, Q1 2025." https://www.seia.org/research-resources/solar-market-insight-report
• EnergySage. (2025). "Solar Marketplace Intel Report." https://www.energysage.com/data/
• U.S. Department of Energy. (2024). "National Community Solar Partnership." https://www.energy.gov/communitysolar/national-community-solar-partnership
• Zillow Research. (2024). "Solar Panels and Home Values." https://www.zillow.com/research/solar-panels-home-value-2024/
• Wood Mackenzie. (2025). "U.S. Community Solar Market Outlook 2025-2030." https://www.woodmac.com/reports/power-markets-us-community-solar-market-outlook
• Coalition for Community Solar Access. (2025). "Community Solar State Policy Tracker." https://www.communitysolaraccess.org/policy-tracker/