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The Connecticut Green Bank replaced its heat pump financing offer on August 1, 2026. The rate moved to 1.99%, the term menu collapsed to a single five-year option, and eligibility tightened to Eversource and United Illuminating electric customers. Here is what the current offer actually does.
Connecticut Green Bank's Smart-E heat pump offer is 1.99% APR on a five-year term, up to $25,000, effective August 1, 2026. To qualify you must be an Eversource or United Illuminating (Avangrid) electric customer, and your Energize CT heat pump rebate must be approved before the loan. Work goes through an Energize CT Heat Pump Installer Network contractor. Larger or mixed-measure loans are written at a blended rate.
Verified August 2, 2026 — Connecticut Green Bank
It is an interest-rate buydown, not a separate loan product. Smart-E is the Connecticut Green Bank's long-running clean energy lending program, delivered through a panel of participating Connecticut lenders. Periodically the Green Bank subsidizes the rate on a particular measure to push adoption. Right now that measure is heat pumps, and the subsidized rate is 1.99% APR on a five-year term, up to $25,000.
The distinction matters when you shop. The standard Smart-E loan still exists alongside this offer, with longer terms, a higher borrowing ceiling, and market-ish rates — that is the product you would use for insulation, windows, or a solar array. The 1.99% figure is not the standard Smart-E rate and never was. If a contractor quotes you 1.99% for a solar project, that is a misread of the program.
Mixed projects get a blended rate. If your loan bundles the heat pump with non-heat-pump work, or if the heat pump itself pushes past $25,000, the lender writes a blended rate rather than a flat 1.99%. Ask for that number in writing before you compare it against anything else.
Three requirements and one caveat. The first two are where projects actually fall over, because both are conditions the homeowner has to satisfy before a lender will price the loan at 1.99%.
You have to be an electric customer of Eversource or United Illuminating (Avangrid). This is the change that catches people out: gas-only customers are no longer eligible for this offer, even for a heat pump that will replace the gas equipment.
The rebate approval is a prerequisite for the loan, not a parallel track. Energize CT administers the rebate; the Green Bank does not control it and is not responsible for the rebate outcome. Get the approval in hand before you expect a loan decision.
The work is delivered through Energize CT Heat Pump Installer Network contractors that are also in good standing with Smart-E. NuWatt handles this side — the contractor registration and the rebate paperwork are ours to carry, not yours.
CorePlus is not participating in this particular offer. Smart-E runs through a panel of participating Connecticut lenders, and the roster for a special offer can differ from the standard program. Confirm the current lender list when you apply.
Heat pump water heaters carry their own Energize CT rebate — see our heat pump water heater rebate guide for how that stacks.
A subsidized rate is worth real money, but it is worth less than the headline implies, because the five-year term is short. Short terms produce high monthly payments and low total interest. Here is a $25,000 balance — the offer's ceiling — run against a typical unsecured home-improvement rate over the same five years.
| Financing | APR | Term | Monthly | Total interest |
|---|---|---|---|---|
| Smart-E heat pump offer | 1.99% | 5 years | $438 | $1,285 |
| Typical unsecured home-improvement loan | 7.50% | 5 years | $501 | $5,057 |
Illustrative. Standard amortization on a $25,000 balance; your rate, balance, and approved amount will differ. The 7.50% comparison is a representative unsecured home-improvement rate, not a quote.
The honest framing: the rate is a genuine subsidy worth a few thousand dollars, and the rebate is worth considerably more than the rate is. If you are optimizing anything, optimize the rebate tier first — moving from the standard tier to Energy Optimization changes the borrowed principal far more than 5.5 points of interest changes the carrying cost. Our Connecticut heat pump rebate guide walks the tiers, and CT heat pump costs covers what systems actually run before incentives.
Four steps, and the order is not negotiable — the rebate approval gates the loan.
This comes first, and it is the step most people invert. The rebate approval is a condition of the 1.99% offer. Rebate amounts run from $250/ton on the standard tier up to $1,000/ton under Energy Optimization, which materially changes how much you need to borrow.
A Manual J load calculation, the equipment selection, and the quote all have to come from a contractor in the Heat Pump Installer Network. The quote is what the lender underwrites against, so the scope needs to be settled before the loan goes in.
Application goes to one of the participating Connecticut lenders, not to the Green Bank directly. Start at ctgreenbank.com/smarteloan for the current roster. This is a normal consumer credit decision — the Green Bank buys the rate down, it does not underwrite you.
Once the loan closes, work gets scheduled. Funds are disbursed against the completed installation rather than paid to you up front. Your first payment starts after that, at the locked 1.99% for the full five years.
NuWatt handles the contractor side. We are the HPIN contractor on your project: the load calculation, the equipment selection, the rebate submission, and the documentation the lender needs. What stays with you is the credit application itself, because the lender has to underwrite you directly.
The previous heat pump offer ended July 31, 2026. If you researched Connecticut heat pump financing earlier this year, the numbers you remember are gone — and one of the changes is a hard eligibility cut, not just a price change.
| Retired (ended 7/31/2026) | Current (from 8/1/2026) | |
|---|---|---|
| Rate | 0.99% APR | 1.99% APR |
| Terms offered | 5-year and 7-year | 5-year only |
| Maximum loan | $25,000 (plus a $30,000 / 10-year tier at 2.99%) | $25,000 |
| Ten-year option | 2.99% APR up to $30,000 | Not part of this offer |
| Who qualifies | Broader utility eligibility | Eversource or UI ELECTRIC customers only |
| Rebate sequencing | Less strictly enforced | Approved rebate required before the loan |
Gas-only customers lost access. This is the change most likely to surprise a Connecticut homeowner mid-project. The offer now keys off electric service with Eversource or United Illuminating. If you heat with gas today and do not hold an electric account with either utility, this particular financing is not available to you — the rebate side may still be, so confirm both before you rule out the project.
No end date has been announced for the 1.99% offer. Special-offer terms are revised periodically, so treat the current numbers as current rather than permanent, and confirm them at ctgreenbank.com/smarteloan before you commit to a timeline.
Yes — and more than that, you must. The approved Energize CT heat pump rebate is a precondition of the offer, so the two are sequenced rather than stacked in the usual optional sense. In practice the rebate lands first and shrinks the principal, and the loan covers what is left.
What is not in the stack anymore is the federal credit. Section 25C, the residential efficiency credit that covered heat pumps, expired December 31, 2025. Anything you read that adds a federal heat pump tax credit to a 2026 Connecticut project is out of date. The rebate-plus-loan combination is the incentive picture now.
Illustrative only. Total interest on the $15,000 balance is about $771. Rebate amounts depend on your tier, equipment, and load — confirm yours through Energize CT before relying on any of these figures.
For the wider financing picture — HELOC, cash, contractor financing, and how the standard Smart-E product compares — see Connecticut heat pump financing options. For the Smart-E program as a whole, including the standard multi-measure loan, our Energize CT Smart-E loan guide is the fuller reference.
It is a Connecticut Green Bank interest-rate buydown on the Smart-E loan program, specific to heat pumps. As of August 1, 2026 the offer is 1.99% APR on a five-year term, up to a $25,000 loan amount, with no prepayment penalties. It sits on top of the standard Smart-E program rather than replacing it, and it is delivered through contractors in the Energize CT Heat Pump Installer Network.
You must be an Eversource or United Illuminating (Avangrid) electric customer, and you must have an approved Energize CT Heat Pump Rebate before the loan. Gas-only customers are not eligible for this offer. The installing contractor has to be in the Energize CT Heat Pump Installer Network and in good standing with Smart-E. Normal consumer credit underwriting still applies through the participating lender.
You can still borrow, but not at a flat 1.99%. Heat pump loans above $25,000 are written at a blended rate, as are loans that bundle heat pump work together with non-heat-pump measures such as insulation, windows, or solar. The blend reflects the portion of the loan that falls outside the special offer. Ask your lender to quote the blended rate explicitly so you can compare it.
Not only can you, you have to. An approved Energize CT heat pump rebate is a prerequisite for this offer, so the rebate and the loan are sequenced rather than optional alternatives. Practically, the rebate reduces the amount you finance, which reduces total interest. There is no federal credit to stack on top: Section 25C expired December 31, 2025, so the rebate-plus-loan combination is the whole incentive picture in 2026.
The previous offer ended July 31, 2026. It carried 0.99% APR on five- and seven-year terms up to $25,000, plus a 2.99% ten-year tier up to $30,000. The current offer is a single 1.99% five-year product capped at $25,000, and eligibility narrowed to Eversource and United Illuminating electric customers. On a $25,000 balance the rate change costs roughly $11 more per month than the retired 0.99% five-year option.
No end date has been announced. That is not the same as permanent — Smart-E special-offer terms are revised periodically, and the previous offer ran for a defined window before being replaced. Treat 1.99% as the current offer rather than a fixed feature of the program, and confirm live terms at ctgreenbank.com/smarteloan before you commit to a project timeline.
Smart-E is an unsecured consumer loan, so it does not place a lien on your property the way a home equity product or a PACE assessment would. There are also no prepayment penalties, so paying the balance off early — for example if you sell the house — costs nothing extra. Confirm the specific terms with your participating lender, since documents are issued by the lender rather than the Green Bank.
This offer is tied to Eversource and United Illuminating electric service. Customers of Connecticut municipal utilities such as Norwich Public Utilities, Wallingford, Groton, and Norwalk’s Third Taxing District are outside Energize CT ratepayer-funded programs and this Green Bank offer. Municipal utilities frequently run their own rebate and financing programs, so check directly with yours before assuming there is nothing available.
The full Smart-E program, including the standard multi-measure loan.
Smart-E against HELOC, cash, and contractor financing.
Rebate tiers — the prerequisite for this offer, and worth more than the rate.
What systems actually cost in Connecticut before incentives.
Heat pump water heaters qualify for both the rebate and this loan.
Which equipment is on the qualified products list.
We are an Energize CT Heat Pump Installer Network contractor. We handle the load calculation, the rebate submission, and the paperwork your lender needs — so the rebate approval that gates the 1.99% rate actually lands.