A 3.5% solar escalator is on the high end, and for most homeowners it's worth a hard second look. A $150 monthly payment climbs to about $342 by year 25. Over the full 25-year term, you'd pay about $25,110 more than you would at a fixed rate of $150. In Massachusetts, it can also be a sign that the deal falls outside the state's SMART program.
That doesn't make every 3.5% quote a scam. It does mean you should slow down before you sign. If you're still getting your bearings, here's how a solar escalator works.
What a 3.5% solar escalator means for your solar lease
A 3.5% annual escalator raises your lease payment by 3.5% every year for the life of the contract. With a solar lease, that's your monthly payment going up. With a PPA, it's your price per kilowatt-hour. Same solar panels, same solar energy, but a payment structure that climbs faster than almost any other option you'll see. The rate is locked in at signing, and the escalator clause raises your monthly payment by that fixed percentage every year until the contract ends.
Solar companies usually pair a high escalator with a low starting rate. During the sales process, that low first-year number is what gets the attention. The 3.5% is the part many homeowners don't think about until year 10 or 15, when the payment is a lot bigger.
Why a 3.5% escalator clause shows up in Massachusetts
Massachusetts limits escalators to 3% a year for leases and PPAs enrolled in its SMART solar program. So how does a 3.5% escalator clause end up in a Massachusetts quote? A few ways:
- The system won't be enrolled in SMART. The 3% limit comes with the program. A solar provider can skip it and set its own contract terms.
- The pricing is national. Large solar companies sell in many states, and most states have no limit. A 3.5% option can be part of a standard menu.
- It's an older agreement. If you're buying a house with leased solar, the solar agreement may predate today's rules.
If a quote shows 3.5%, ask one direct question: will this system be enrolled in the SMART program? Solar contract terms vary, and the answer tells you a lot about the deal.
How a 3.5% escalator compounds over 25 years
The escalator compounds, so the higher the rate, the faster the increases snowball. Each year's increase is 3.5% of last year's payment. That small annual increase of about $5 in year two turns into more than $11 a year by the end of the contract.
| Escalator | Year 1 | Year 5 | Year 10 | Year 15 | Year 20 | Year 25 |
|---|---|---|---|---|---|---|
| 3.5% | $150 | $172 | $204 | $243 | $288 | $342 |
| 0% (flat) | $150 | $150 | $150 | $150 | $150 | $150 |
Monthly payment starting at $150, rounded to the nearest dollar.
What your solar payment looks like at 3.5%
Here's how a $150 lease payment escalates at 3.5%:
- Year 10: about $204 a month
- Year 20: about $288 a month
- Year 25: about $342 a month
The payment passes $300 in year 22. Over 25 years, the total comes to about $70,110, compared with $45,000 if the payment never changed. With a PPA, a 20-cent starting price would climb to about 46 cents per kilowatt-hour by year 25.
3.5% vs. 2.9%: how much more the higher escalator rate costs
On paper, 3.5% and 2.9% look close. On a $150 starting payment, the higher escalator rate adds about $5,338 over 25 years, and about $45 a month by year 25. That's a lot of money for a 0.6% difference.
Typical escalator rates run from 0% to about 3%, and 2.9% and 2.99% are the most common on solar leases and PPAs, so they're the fair comparison. Here's the full breakdown on a 2.9% solar escalator, and if you're weighing a lower option, here's what a 1.99% escalator does over the same 25-year contract.
When a 3.5% escalator passes your utility rate
A faster-rising solar payment catches your utility rate sooner. Here's the crossover year, when your solar price passes what you'd pay the utility, for 3.5% next to 2.9%:
| If utility rates rise | 3.5% escalator | 2.9% escalator |
|---|---|---|
| 0% a year | Year 6 | Year 7 |
| 1% a year | Year 8 | Year 10 |
| 2% a year | Year 13 | Year 20 |
| 3% a year | Never in 25 years | Never in 25 years |
Year your solar price per kWh passes your utility rate, assuming it starts 15% below your utility rate. At 4% or more a year, none of these rates ever catch up.
If utility rate increases slow to 1% a year, a 3.5% deal stops saving you money by year 8. Massachusetts electricity rates have increased about 70% since 2015, but rates don't climb in a straight line. Your escalator rate may outpace them for long stretches. Here's how solar lease escalators compare with Massachusetts utility rates over time.
And don't forget your utility bill. Most homes with solar still pay for grid power at night, so count both bills when you do the math.
Questions to ask before signing a solar contract with a 3.5% escalator
- Do you offer a lower escalator or a 0% fixed rate, and what's the starting payment for each?
- Will this system be enrolled in the SMART program?
- What will my payment in year 10, year 20 and year 25 be?
- What happens to this solar lease or PPA if I sell my house?
- Is there a buyout option, and how is the price set?
- How long is the solar cancellation window, and how do I give notice?
Get the answers in writing. Here's what to look for in a solar contract before you sign anything.
Is a solar lease escalator this high ever worth it for a homeowner?
Sometimes. A 3.5% escalator can make sense if the starting payment is dramatically lower than every other option and you expect to move within a few years. Lower payments up front can matter when the budget is tight right now.
For a homeowner planning to stay the full term, it rarely beats a lower escalator or a payment that never changes. Before you decide, compare escalator offers side by side. Here's how to compare two solar quotes with different escalators.
Selling your home with a 3.5% escalator
When you sell, the buyer usually has to take over your lease, escalator included. A new homeowner gets today's escalated payment, not your starting one. In year 10 of a $150 lease at 3.5%, that's about $204 a month, and it keeps climbing.
A steep escalating payment schedule can make some buyers hesitate. If a buyer won't take it on, a buyout may be the only path forward, and the payments left on a 3.5% lease make that number bigger.
Leased solar vs. owning
Only leased solar and PPAs carry an escalator. If you own your system with cash or a solar loan, the loan payment is fixed and there's no escalation at all. In any solar lease vs. ownership comparison, that's the biggest difference, and it's worth asking every solar provider about your solar financing options.
Looking at a 3.5% quote?
Send it to Mark before you sign. He'll review it and find you an option with no escalator.
Mark, review my quoteFAQs About 3.5% Solar Escalators
Is a 3.5% escalator allowed in Massachusetts?
It can be. Leases and PPAs enrolled in the state's SMART program can't go above 3% a year, but contracts outside that program aren't held to the same limit. If your system is enrolled in SMART and your escalator is over 3%, you can raise it with the state at DOER.SMART@mass.gov.
How long until a 3.5% escalator doubles my payment?
A $150 starting payment passes $300 in year 22. At 2.9%, it takes until year 26.
Can I get the escalator rate lowered before I sign?
Often, yes. Ask the solar provider for every escalator option it offers, including 0%, along with the starting payment for each. Then compare the payment over 25 years, not just the first bill.
I already signed a 3.5% contract. What now?
Find the cancellation window in your solar contract, which is often only a few business days after signing. Whether you're inside it or not, it's worth having someone go through the full contract with you.
About Mark Featherstone
Mark has been in solar for over 12 years, working at some of the biggest solar companies in the country, before co-founding Your World Solutions. His goal is simple: help homeowners get into solar deals that actually work for them, and make sure they understand every part of it before they sign.
This article is for general informational purposes only and isn't financial, legal or tax advice. Numbers and examples are estimates for illustration. Actual payments, savings, utility rates and contract terms vary and aren't guaranteed, and rates and program rules can change over time. Review your own contract and talk with a qualified professional before making a decision.