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Get a Free QuoteA lease with escalating payments or a system you own outright? We break down the 25-year cost math for CT homeowners — including Smart-E Loan financing, net metering, and post-ITC reality.
For most CT homeowners, buying solar through a local installer saves $10,000-20,000 more over 25 years compared to a Sunrun lease or PPA. With the Smart-E Loan (6.99-7.99% APR, $0 down), ownership is accessible even without cash on hand. You keep 100% of the savings, your payments are fixed, and your home value increases.
Sunrun's $0-down PPA may appeal if you cannot qualify for any loan, but the escalator clause means your solar "savings" shrink every year — and after 25 years, you own nothing.
| Factor | Sunrun Lease / PPA | Local Installer (Own) |
|---|---|---|
| Upfront Cost | $0 down | $0 down (Smart-E Loan) or $26K-29K cash |
| System Ownership | Sunrun owns it | You own it |
| Effective $/kWh | $0.17-0.21 starting (escalates) | $0.07-0.11 fixed (lifetime avg) |
| 25-Year Total Cost | $40,000-50,000 | $26,000-32,000 |
| Annual Escalator | 1.5-2.9% per year | None — fixed payment |
| CT Net Metering | Credits go to Sunrun | Full 1:1 retail credits are yours |
| Home Value Impact | $0 — it's their asset | +3-4% home value (tax exempt in CT) |
| Selling Your Home | Buyer must assume lease or you pay buyout | Panels convey with home — selling point |
| Contract Length | 25 years | 12-20 yr loan (then free electricity) |
| Maintenance | Sunrun handles it | 25-year warranty; minimal upkeep (~$150/yr) |
Understanding which incentives you actually receive is critical — because under a Sunrun lease, some benefits go to Sunrun, not you.
The residential solar tax credit expired December 31, 2025. Homeowners who buy solar in 2026 get $0 in federal tax credits. Sunrun can still claim the commercial ITC (Section 48E) on systems they own — but that benefit stays with Sunrun, not you.
Connecticut offers full retail 1:1 net metering. If you own your system, every excess kWh offsets your bill at the full Eversource ($0.33/kWh) or UI ($0.28/kWh) rate. Under a Sunrun PPA, these credits benefit Sunrun's economics — you just pay the PPA rate.
Connecticut permanently exempts solar panels from property tax assessment. If you own your system, your home value increases 3-4% but your property taxes don't. Under a Sunrun lease, this benefit is irrelevant — you don't own the panels.
Solar equipment is exempt from Connecticut's 6.35% sales tax. On a $28,000 system, that's ~$1,778 in savings. This applies when you purchase — under a Sunrun lease, Sunrun captures this benefit as part of their cost structure.
The CT Green Bank's Smart-E Loan offers 6.99-7.99% APR with up to $50,000 in financing and terms up to 20 years. This is the key reason ownership beats leasing in Connecticut: you get $0 down, fixed payments, and you own the system. After the loan is paid off, your electricity is essentially free for the remaining life of the panels. Sunrun cannot match this — their payments never stop and never decrease.
The Residential Solar Investment Program (RSIP) is closed/exhausted. There is no active state rebate for residential solar in Connecticut as of 2026. Both Sunrun and local installer customers are equally affected.
A Connecticut colonial home with solar panels — ownership means the savings and home value increase are yours.
Sunrun PPAs in Connecticut typically start at $0.17-0.21/kWh — below the utility rate. But the annual escalator changes the math fast.
| Year | Sunrun PPA Rate | Eversource Rate* | Your "Savings" |
|---|---|---|---|
| Year 1 | $0.190 | $0.270 | $0.080/kWh |
| Year 5 | $0.213 | $0.306 | $0.093/kWh |
| Year 10 | $0.246 | $0.347 | $0.101/kWh |
| Year 15 | $0.284 | $0.394 | $0.110/kWh |
| Year 20 | $0.328 | $0.447 | $0.119/kWh |
| Year 25 | $0.379 | $0.507 | $0.128/kWh |
*Eversource rate assumes 3.5% annual increase from $0.33/kWh base. Actual rates may vary. The "savings" column shows the gap between your PPA rate and utility rate — but remember, with ownership you'd pay $0 after the loan is paid off.
The hidden problem:
Even though the PPA stays below the utility rate, you're paying $0.379/kWh in year 25 — more than Eversource charges today. Meanwhile, a homeowner who purchased solar with a Smart-E Loan finished payments in year 15-20 and has been generating free electricityever since. The total ownership cost over 25 years: $26,000-32,000. Sunrun's total: $40,000-50,000.
Average System Cost (9 kW)
$26,100 - $28,800
$2.90-3.20/W installed, CT average
Smart-E Loan Payment
$210 - $260/mo
15-year term, 6.99-7.99% APR, $0 down
Payback Period
11 - 14 Years
No federal ITC, but CT incentives help
Modern solar panels carry 25-30 year warranties and often produce for 35+ years. Once your Smart-E Loan is paid off (year 15-20), your electricity cost drops to essentially $0. At CT rates of $0.27-0.28/kWh, a 9 kW system produces ~$2,900-3,200/year in free electricity during those post-loan years. Over 10 years of free power, that's an additional $29,000-32,000 in value — savings a Sunrun lessee never receives.
See exactly what solar would cost on your Connecticut home — with ownership options, not a lease. Takes 2 minutes, no commitment.
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