When homeowners decide to go solar, one of the biggest financial choices is whether to lease the system or buy it outright. A solar lease offers lower upfront costs and predictable monthly payments, while buying provides full ownership, tax benefits, and higher long-term savings. This article breaks down the numbers behind each option, including installation costs, financing rates, federal tax credits, and payback periods, to help you determine which path makes the most sense for your home and budget.

Understanding Solar Leases and Purchases

A solar lease is a contract where a third-party company owns the solar panels installed on your roof. You pay a fixed monthly fee for the electricity generated, typically at a rate lower than your utility's retail price. In contrast, buying a solar system means you own the panels, inverter, and other equipment. You pay the full upfront cost (or finance it via a loan) and then keep all the electricity savings and any incentives.

Key Differences at a Glance

  • Ownership: Lease = third-party owns; Buy = you own.
  • Upfront cost: Lease = $0 or minimal; Buy = $15,000–$30,000 (before incentives).
  • Monthly payment: Lease = fixed monthly fee (e.g., $80–$150); Buy = $0 if paid cash, or loan payment (e.g., $100–$200).
  • Tax credits and incentives: Lease = claimed by the leasing company (you get none); Buy = you claim the 30% federal tax credit and state/local incentives.
  • Savings over time: Lease = modest, typically 10–30% off your electric bill; Buy = higher, often 50–100% of bill offset.
  • Maintenance: Lease = covered by lessor; Buy = your responsibility (but usually minimal).
  • Sale of home: Lease = must transfer contract; Buy = adds property value.

Upfront Costs and Financing

The most obvious difference is the upfront investment. A typical 7 kW residential solar system in the United States costs around $2.80–$3.50 per watt before incentives, so a 7 kW system runs $19,600–$24,500. After the 30% federal solar tax credit (see Federal Solar Tax Credit ITC Guide), that drops to $13,720–$17,150. Many homeowners finance with a solar loan, paying $0 down and monthly installments of $100–$200 over 10–20 years at 4–8% APR.

In contrast, a solar lease requires $0 down. The leasing company pays for installation and owns the system. You simply sign a 20–25 year contract with a fixed monthly payment, often starting at $80–$120 and escalating 1–2% annually. Some leases offer a production guarantee, meaning if the panels underperform, the company compensates you.

Federal and State Incentives

The federal Investment Tax Credit (ITC) allows you to deduct 30% of the system cost from your federal taxes. If you buy, you can claim this credit. For a $20,000 system, that's a $6,000 tax credit. Many states also offer additional incentives, such as rebates or performance-based payments. See State-Level Solar Incentives by State for details.

With a lease, the leasing company claims the ITC and any state incentives. In exchange, they offer you a lower monthly rate. However, you lose the ability to claim these benefits yourself. Over 20 years, the value of the ITC alone can be $5,000–$8,000, which the leasing company keeps.

Monthly Savings and Payback Period

To compare savings, consider a typical California home with a $200 monthly electric bill. A 7 kW system might offset 90% of usage, saving $180/month. If you buy with cash, your payback period is roughly 7–9 years (system cost after ITC divided by annual savings). After that, electricity is essentially free for the remaining 15–20 years of panel life. If you finance with a loan, your monthly loan payment might be $120, while your savings are $180, netting $60/month. Over 20 years, total net savings can be $20,000–$40,000 depending on utility rate escalation.

With a lease, your monthly payment might be $100 (fixed), and your savings are $180, netting $80/month. However, the lease payment often escalates 1–2% annually, while utility rates may rise 3–5%. Over 20 years, your net savings may be $10,000–$20,000 less than buying. Use a solar payback calculator to compare scenarios.

Long-Term Financial Impact

Buying a solar system increases your home's resale value. Studies show homes with owned solar sell for 4–5% more than comparable non-solar homes. A leased system can complicate a home sale because the buyer must qualify to take over the lease. Some buyers are reluctant, and you may need to buy out the lease or offer incentives.

Leases also have a lower total savings ceiling. Over 25 years, a purchased system might save $50,000–$80,000, while a lease might save $20,000–$40,000. However, the lease requires no capital outlay and provides immediate savings. For homeowners who cannot claim the ITC (e.g., tax liability too low) or prefer zero upfront cost, a lease can be a viable option. Compare lease vs. loan vs. PPA in Solar Loans vs Lease vs PPA.

Battery Storage Considerations

If you plan to add a battery, ownership matters. When you buy the solar system, you can also buy a battery and claim the 30% ITC on both (see Battery Storage Tax Credits). With a lease, the leasing company may allow you to add a battery separately, but the terms can be complex. For backup or self-consumption, see Battery Sizing for Backup vs Self-Consumption.

Net Metering and Buyback Rates

Your utility's net metering policy significantly affects savings. Full retail net metering (1:1 credit) makes solar more valuable. If you buy, you benefit fully from net metering credits. With a lease, the leasing company typically credits you at a lower rate, such as 80% of retail. Some states are moving to net billing, where excess generation is compensated at a lower rate. See Net Metering Explained and Solar Buyback Rates Comparison.

Which Option Is Right for You?

Consider your financial situation and goals:

  • Buy if: You have cash or can qualify for a low-interest loan, you have sufficient tax liability to claim the ITC, you plan to stay in your home for 7+ years, and you want maximum long-term savings.
  • Lease if: You cannot claim the ITC, you prefer zero upfront cost, you don't want maintenance responsibility, or you plan to move within a few years (though lease transfer can be tricky).

For a deeper dive into the economics, read The Complete Guide to Distributed Energy Economics.

Related Articles

  • Solar Loans vs Lease vs PPA
  • Federal Solar Tax Credit ITC Guide
  • How to Calculate Solar Payback Period
  • Solar Buyback Rates Comparison
  • State-Level Solar Incentives by State