Solar PPA vs. Solar Lease

Third-Party Ownership Explained

Both Solar Leases and Power Purchase Agreements (PPAs) share the same core foundation: a third-party solar company owns, installs, and maintains the solar panels on your roof. You do not own the system, and the solar company takes the federal tax credits and local rebates.

The difference between the two models lies entirely in how you are billed.

The Solar Lease: Fixed Monthly Rent

A solar lease operates much like a car lease. You agree to pay a fixed monthly fee (e.g., $150/month) to "rent" the equipment on your roof.

• Predictability: You know exactly what your solar bill will be every single month, regardless of whether it's a sunny July or a cloudy December.
• Production Risk: You get all the electricity the system produces. If it produces less than expected during a cloudy month, you still owe the fixed $150 lease payment, and you'll have to buy more power from the utility to make up the difference. (Though many leases include an annual production guarantee).

The Power Purchase Agreement (PPA): Paying for Output

With a PPA, you do not rent the equipment. Instead, you agree to buy the actual electricity the panels generate at a set rate (e.g., 15 cents per kWh).

• Variable Bills: Your PPA bill will fluctuate based on the weather. In sunny summer months, the system produces a lot of power, so your PPA bill will be high (but your utility bill will be near zero). In winter, your PPA bill will be low.
• Production Risk: The risk is entirely on the solar company. If the panels break or produce less power, you simply don't pay for power you didn't receive.

The Escalator Clause (Crucial Warning)

Both Leases and PPAs frequently contain an "escalator clause." This means your monthly lease payment (or your PPA per-kWh rate) will automatically increase by a set percentage (usually 1% to 3%) every single year for 25 years.

Salespeople justify this by saying utility rates will rise even faster. While historically true, an escalator clause guarantees your costs will go up. Always ask for a "0% escalator" quote to lock in your rate for the full 25 years, even if it means a slightly higher starting price.

Which is Right For You?

Both models provide a $0-down path to cheaper, cleaner energy without maintenance headaches. A PPA is generally preferred because you only pay for exactly what the system produces, aligning your costs perfectly with your actual energy generation. A Lease is better for homeowners who demand absolute predictability in their monthly budgeting.