Geothermal Financing in 2026: PACE Loans, Green Mortgages, Utility Rebates, and More

The financing landscape for residential geothermal heat pumps shifted fundamentally in 2026. The Section 25D Residential Clean Energy Credit — the 30% federal credit that anchored most homeowner cost models from 2022 through 2025 — was terminated for new installations made after December 31, 2025 by the One Big Beautiful Bill Act (P.L. 119-21, signed July 4, 2025). At the same time, several traditional financing pathways changed: HUD's FHA PowerSaver pilot is no longer available, Fannie Mae replaced HomeStyle Energy with the broader HomeStyle Refresh effective March 31, 2026, and third-party leasing (TPO) emerged as a primary residential pathway because corporate lessors can still claim the §48 commercial credit and pass savings through to homeowners. This guide covers what is currently available in 2026 — PACE loans, the new GSE renovation mortgages, FHA Energy Efficient Mortgages, utility rebates, manufacturer financing, credit union green loans, TPO leasing, and the federal HEEHRA and HOMES rebate programs — without the now-obsolete framing.

Overview of Available Geothermal Financing Pathways

For 2026 installs, the financing toolkit centers on six categories: property-assessed financing (PACE), GSE renovation mortgages (Fannie Mae HomeStyle Refresh, Freddie Mac GreenCHOICE), federal-program mortgages (FHA Energy Efficient Mortgage, VA EEM), utility-sponsored rebates and on-bill financing, manufacturer and contractor financing, and credit union green loans. Layered on top are state rebates (NY, MA, CT, NYSERDA), federal HEEHRA and HOMES rebates where state programs are open, and — for households unable to use a tax credit anyway — third-party ownership leases that monetize the surviving §48 commercial credit.

Two structural changes from prior years matter most. First, with §25D gone for new residential expenditures, the cost model shifts toward state, utility, and rebate-program incentives plus financing pathways that don't depend on federal tax-credit recapture. Second, §48 is preserved for commercial owners through 2032 (with a phase-down to 5.2% in 2033, 4.4% in 2034, and 0% after December 31, 2034 per P.L. 119-21), which is why TPO leasing is now a meaningful residential option rather than a niche product.

These pathways are not mutually exclusive. A typical 2026 stack combines a primary loan or mortgage product, a state or utility rebate, and — where the household qualifies — HEEHRA or HOMES funds. Without §25D, the achievable net-cost reduction is smaller than 2025 stacks but still material in states with active programs.

Federal Tax Treatment in 2026: What Changed

The 30% Section 25D Residential Clean Energy Credit was terminated for expenditures made after December 31, 2025 by the One Big Beautiful Bill Act (P.L. 119-21). Per IRS guidance and published §25D rules, "expenditure made" means the date installation is completed — not the date a contract is signed or a deposit paid. Practical implication for 2026 installs: no §25D credit is available, regardless of when the project was contracted.

Two carryforward and successor mechanics still work:

• 2025 carryforward. If a system was placed in service in 2025 and the homeowner could not use the full credit against 2025 tax liability, the unused portion carries forward via IRS Form 5695 to subsequent tax years until used or until the credit expires.
• §48 commercial credit (and §48E technology-neutral successor). The commercial Investment Tax Credit for geothermal heat pumps is still active: 6% base rate, up to 30% with stacked bonuses (domestic content, prevailing wage, energy community, apprenticeship). It begins phasing down in 2033 (5.2%), 2034 (4.4%), and ends after December 31, 2034. Residential homeowners cannot claim §48 directly, but a corporate owner of a TPO lease can — which is why leasing has surged in 2026.

This change affects the financial math more than the technical decision to install. With state, utility, and HEEHRA/HOMES rebates intact in many jurisdictions, a 2026 installation in NY, MA, or CT can still see meaningful incentive offset; in states with no programs, payback shifts from the 5–10 year range typical with §25D into the 10–15 year range without it (per DOE/EERE modeling).

Third-Party Ownership (TPO) Leasing: New for 2026

TPO leasing was a minor product in residential geothermal through 2025 but has grown rapidly in 2026 as a workaround for the §25D termination. The structure: a corporate lessor (typically affiliated with an installer or financing partner) owns the geothermal equipment, claims the §48 commercial credit (6%–30% depending on bonus stacking), and leases the system to the homeowner over a 15–25 year term. The lease payment is sized so that the corporate tax savings are partially passed through to the homeowner as a reduced monthly cost relative to ownership financing.

Key trade-offs:

• No upfront capital required in most lease structures.
• The homeowner does not own the equipment for the lease term; transfer at end-of-lease varies by contract (buyout option, automatic transfer, or removal).
• Selling the home requires lease assumption by the buyer, which can complicate sales similarly to PACE.
• No homeowner tax credit — the §48 credit goes to the lessor; what reaches the homeowner is whatever portion the lessor passes through in pricing.

For households whose tax liability would not have absorbed the full §25D credit anyway (and which therefore lost less when the credit was terminated), TPO can be an efficient pathway. For high-tax-liability households who would have used a credit fully, TPO economics compare less favorably to direct ownership financing — but with §25D gone, "direct ownership without credit" is the relevant comparison, and TPO is often competitive.

PACE Loans: Property-Assessed Clean Energy Financing

For state-specific contractor matches, see our California, Florida, and Missouri geothermal directories — three of the largest PACE-eligible jurisdictions.

PACE financing ties the loan to the property rather than the borrower. A local government or authorized PACE administrator funds the installation; repayment occurs through an additional line on the property tax bill over 10 to 25 years. If the home is sold before payoff, the remaining balance typically transfers with the property, subject to disclosure rules and buyer agreement.

Residential PACE (R-PACE) availability in 2026 is narrower than commercial PACE. Despite enabling legislation in roughly three dozen states, active residential programs are concentrated in California, Florida, and Missouri, with limited or paused programs elsewhere. Commercial PACE (C-PACE) is more widely active but does not apply to single-family residential.

Qualification is property-equity- and tax-payment-history-based rather than FICO-driven, which is why PACE is often used by households that cannot qualify for traditional mortgage products. Trade-offs include:

• Higher interest rates than first-mortgage products (typically 6.5%–9.5% in 2026).
• The PACE assessment is recorded as a property lien with priority status in many jurisdictions, which can complicate refinancing or sale.
• Most jurisdictions require primary mortgage lender consent or notification.
• Federal mortgage agencies (FHA, Fannie Mae, Freddie Mac) have varying positions on properties with active PACE liens.

Verify that your jurisdiction has an active R-PACE program before assuming availability — coverage maps from the Department of Energy and DSIRE are the most current sources, and conditions change.

GSE Renovation and Energy Mortgages: Fannie Mae HomeStyle Refresh and Freddie Mac GreenCHOICE

For purchase or refinance transactions, the Fannie Mae and Freddie Mac renovation mortgage products are the most flexible 2026 pathway for geothermal financing.

Fannie Mae HomeStyle Refresh (effective March 31, 2026, SFC 892): The HomeStyle Refresh product replaces HomeStyle Energy and broadens scope to include cosmetic, energy, resiliency, and environmental remediation improvements. Improvement amount can reach up to 15% of the as-completed appraised value of the home. For a $400,000 home that's up to $60,000 in improvements rolled into the mortgage. Geothermal heat pump systems qualify as an energy improvement under the program. See Selling Guide B5-3.3-01 for current terms.

Freddie Mac GreenCHOICE Mortgage: Active alternative permitting financing of energy improvements up to 15% of property value for existing homes, or inclusion of energy features in new construction. See Freddie Mac GreenCHOICE for current product details.

FHA Energy Efficient Mortgage (EEM): The FHA EEM program is still active in 2026 (separate from the discontinued FHA PowerSaver pilot, which ended in 2015 and was archived under 85 FR 69640). The EEM allows borrowers to add up to $8,000 (or 5% of property value, capped at $4,000) to their FHA mortgage for energy improvements without additional debt-to-income qualification beyond standard FHA requirements. This is a smaller cap than the GSE renovation products but is paired with FHA's lower down payment (3.5%) and more flexible credit standards.

VA Energy Efficient Mortgage: Veterans and active-duty service members can add up to $6,000 to a VA loan for energy improvements without affecting the loan guarantee. Improvements above $6,000 may be permitted with additional underwriting.

Mortgage products typically deliver lower rates (1–3 percentage points below unsecured financing) and longer amortization, lowering monthly payments at the cost of higher total interest over the loan life.

Utility Rebate Programs and On-Bill Financing

Find rebate-savvy installers in Illinois (ComEd), New York (NYSERDA), Indiana, Maryland, and Virginia.

Utility-sponsored geothermal rebates remain a significant cost reducer in 2026, with hundreds of electric utilities, cooperatives, and municipal power providers offering incentives ranging from a few hundred dollars to several thousand. Geothermal systems benefit utilities because they reduce peak demand and flatten load profiles relative to air-source heat pumps.

The Database of State Incentives for Renewables and Efficiency (DSIRE) at NC State remains the canonical lookup for utility programs by ZIP code. Specific 2026 examples include:

• Mass Save (Massachusetts): Up to $13,500 whole-home GSHP rebate (down from $15,000 in 2025); $25,000 for income-qualified households at or below 60% State Median Income. The Mass Save HEAT Loan is a separate 0% APR financing product, not a rebate, with its own qualification process.
• NYSERDA / NY Clean Heat: Utility-administered rebates averaging $7,000–$9,000 per residential GSHP install (separate from the New York state tax credit).
• ComEd (Illinois): $2,000 ducted GSHP rebate, $1,000 ductless. Note that no Illinois state-level GSHP tax credit exists despite occasional online claims to the contrary.
• Ameren (Illinois): $900 ducted, $630 ductless.

Some utilities offer enhanced rebates for systems including desuperheaters, or tier rebates by efficiency rating. A subset offer on-bill financing — the loan is repaid through the monthly utility bill at below-market rates (sometimes 0%), often without credit checks, and may transfer with the property at sale. On-bill availability is concentrated in the Pacific Northwest, Northeast, and select Southeastern utilities.

The most effective rebate-stacking sequence in 2026 starts with state and utility programs first (capture-at-installation), then layers federal HEEHRA or HOMES rebates where the state has launched a program, then any remaining state tax credits at filing. Order matters because some utility programs reduce rebate amounts based on stacked incentives; read program rules carefully.

HEEHRA and HOMES: Two Distinct Federal Rebate Programs

The Inflation Reduction Act created two separate state-administered rebate programs that are often confused:

• HEEHRA (also called HEAR), §50122: Up to $8,000 for a heat pump including ground-source heat pumps. Income-tiered: households below 80% of Area Median Income receive the full rebate; 80–150% AMI receive 50%. State rollout varies — some states have active programs, others are in design or have suspended applications.
• HOMES Act, §50121: Performance-based whole-home rebate. Calibrated to modeled or measured energy savings, available across income bands with higher amounts for moderate-income households. HOMES is a separate program from HEEHRA and uses different eligibility math.

These are two different programs — a household may potentially qualify for one or the other (or neither, depending on state status and home performance). Check your state energy office or DSIRE for current program status; some states paused intake in 2025 due to administrative or budget changes.

Manufacturer and Dealer Financing

Major geothermal manufacturers maintain financing programs through their dealer networks, partnering with third-party lenders. These programs are generally accessed through a participating dealer rather than directly from the manufacturer.

• WaterFurnace dealer financing: WaterFurnace's dealer network offers financing through partner lenders, with options including no-money-down structures, promotional 0% APR periods for qualified buyers, and terms up to 12 years. Note: WaterFurnace's Symphony platform is a connectivity and performance-monitoring product (smart thermostat, IoT diagnostics, dealer service tools), not a financing product. Financing is offered through dealer-side partners separately.
• Carrier / Bryant: Carrier offers consumer financing through Wells Fargo and other partners, with terms up to 144 months. Carrier modernized its residential GSHP line in June 2025 with R-454B (Puron Advance) refrigerant and updated NFC and InteliSense diagnostics. Promotional periods (reduced APR or deferred interest) recur seasonally.
• Bosch / Florida Heat Pump: Dealer financing through participating contractor networks.
• ClimateMaster: Tiered financing offered through dealer networks based on credit profile.

When evaluating "0% APR for X months" promotional offers, read the deferred-interest terms carefully. Many programs apply retroactive interest from the contract date if the balance is not paid in full before the promotional period ends. Compute the effective cost under realistic payoff scenarios before signing.

Credit Union and Community Bank Green Loans

Credit unions and community banks remain a competitive source of geothermal financing in 2026, often pricing 0.5%–1.5% below the institution's standard home improvement loan rates for qualifying energy improvements. Geothermal systems generally meet "qualifying improvement" definitions in green loan programs.

Notable programs:

• Clean Energy Credit Union: Specialty credit union focused on clean energy and efficiency loans. Geothermal financing up to $100,000 with terms to 20 years.
• Inclusiv: Network of community development credit unions offering below-market energy efficiency loans, often in underserved markets.
• State-specific programs: Some states have facilitated credit union partnerships with energy offices — for example, NYSERDA's Green Jobs–Green New York program connects homeowners with credit union financing at reduced rates.

Community Development Financial Institution (CDFI) certified banks may offer additional below-market rates funded through Greenhouse Gas Reduction Fund allocations established under the Inflation Reduction Act. Allocations are state- and lender-specific.

To find programs locally, check credit unions where you already hold membership, search the National Credit Union Administration locator (mycreditunion.gov), or contact your state credit union league.

State-Specific Programs: Verify Current Status

State programs change frequently. Verified 2026 status of programs frequently cited in older content:

• New York state geothermal tax credit: $10,000 cap (raised from $5,000 effective July 1, 2025 per S4882; codified at NY Tax Law § 606(g-4)). 25% of installed cost. Primary residence only. Source: tax.ny.gov.
• Connecticut Smart-E Heat Pump Special: 0.99% APR through June 30, 2026 (not 0% — a frequent misquote — and not PACE). Standard Smart-E rate is 6.99%–7.99%. Source: CT Green Bank.
• Massachusetts Mass Save: $13,500 whole-home GSHP rebate in 2026 (down from $15,000 in 2025); $25,000 income-qualified.
• Illinois: No state-level GSHP tax credit exists. Utility rebates only (ComEd $2,000 / $1,000; Ameren $900 / $630).
• Vermont: No state-level GSHP tax credit exists. Efficiency Vermont rebates vary by utility; GMP offers an income-qualified $2,000-per-condenser bonus.
• Indiana property tax deduction for geothermal: Repealed by SEA 1 (2025), retroactive to January 1, 2025. The prior IC 6-1.1-12-34 deduction now applies only to assessment dates before that cutoff. Vertical closed-loop installations also require licensing per IC 25-39 and 312 IAC 13-8-1.
• Maryland, Virginia, Washington: Property tax exemption (MD), sales tax exemption (VA, WA). Verify current status before relying on these.

For your jurisdiction's current program status, the DSIRE database and your state energy office are the authoritative current sources.

Combining Financing and Incentive Layers in 2026

The 2026 stacking sequence differs from prior years because §25D is unavailable for new installs. The remaining levers are state credits, utility rebates, HEEHRA/HOMES (where launched), and financing terms.

Suggested stacking order:

1. Secure financing on the full system cost (so you don't lose loan headroom by netting incentives early).
2. Apply for utility rebates — usually paid at or near installation.
3. Apply for state rebates (e.g., Mass Save, NYSERDA Clean Heat) on the timing each program specifies.
4. Apply for HEEHRA and/or HOMES if your state has an active program and your income qualifies.
5. Claim any remaining state tax credits (e.g., NY $10,000 cap) on the next tax filing.
6. Use rebate checks and refunds to make principal payments on the financing, accelerating payoff.

For a $25,500 average-installed 3-ton residential GSHP in 2026 (DOE/EERE-derived), a stacked example in NY combining a HomeStyle Refresh mortgage at 6.5% over 30 years, a $7,500 NYSERDA Clean Heat rebate, and the $10,000 NY state tax credit yields a net cost in the $8,000–$9,000 range plus financed interest. The same install in a state without programs lands closer to the gross system cost minus only utility rebates if any.

*Assumes $3,000 in combined state + utility incentives. NY/MA/CT/MN stacks can be substantially higher (NY $10K state credit + $7–9K NYSERDA rebate brings net to roughly $8,000–$9,000). Most other states sit closer to the table baseline. §25D federal credit not available for 2026 installs per P.L. 119-21.

Choosing a Financing Strategy

Selecting an approach is a function of credit profile, equity position, time horizon, and tax situation:

• Excellent credit (720+) with home equity: Compare a HELOC, credit union green loan, and a HomeStyle Refresh refinance. The HomeStyle Refresh tends to win on rate and term but adds closing costs.
• Good credit (680–719), limited cash: Manufacturer 0%-down or PACE (where active). Compare total cost including any deferred-interest exposure on promotional offers.
• Fair credit (620–679): R-PACE qualifies on property equity rather than FICO; some credit unions accommodate lower scores. Manufacturer financing through dealers may also qualify.
• Purchasing a home: FHA EEM, VA EEM, or HomeStyle Refresh / GreenCHOICE roll improvement cost into the purchase mortgage. Generally the most cost-effective if the geothermal install can be sequenced with closing.
• Lowest possible monthly payment: 25-year R-PACE or 30-year HomeStyle Refresh / GreenCHOICE. Trade-off is higher total interest.
• Lowest total interest: 10–15 year credit union green loan or manufacturer fixed-rate, if monthly cash flow permits.
• Selling within 5–7 years: R-PACE assessments transfer with the property but may complicate buyer financing. Traditional loans remain your obligation but don't encumber the property. Compare against expected resale-value impact (typical $8,700–$15,000 per NAHB / Lawrence Berkeley National Laboratory data).
• Cannot use a tax credit and want zero upfront: TPO lease may price competitively because the lessor uses §48 you can't access yourself.

Frequently Asked Questions

Is the 30% federal tax credit still available in 2026?

No. The Section 25D Residential Clean Energy Credit was terminated for expenditures made after December 31, 2025 by the One Big Beautiful Bill Act (P.L. 119-21). New residential installs in 2026 cannot claim §25D. Homeowners who placed systems in service in 2025 and could not use the full credit can carry the remainder forward via IRS Form 5695. The §48 commercial credit remains active through 2032 with a phase-down through 2034, but applies to commercial owners — including third-party lessors who lease residential systems to homeowners.

Can I get geothermal financing with bad credit?

Yes, several options accommodate non-prime credit. R-PACE (where available) qualifies based on property equity and tax payment history. Some utility on-bill programs do not require credit checks. CDFI-certified community banks and select credit unions are mission-driven to serve underserved borrowers. Rates are typically higher and terms shorter, but financing is achievable across credit profiles.

What's the difference between FHA Energy Efficient Mortgage and the old FHA PowerSaver?

FHA EEM is the active, ongoing program — it allows up to $8,000 (or 5% of property value, capped at $4,000) for energy improvements bundled into an FHA mortgage. FHA PowerSaver was a separate pilot program that ended in 2015; HUD archived its obsolete guidance in November 2020 (85 FR 69640). Older content sometimes still references PowerSaver as an active option; it is not.

Will financing geothermal affect my ability to get other loans?

Traditional loans (HELOC, credit union, manufacturer) appear on credit reports and affect debt-to-income calculations for future lending. R-PACE is recorded as a property tax assessment rather than a consumer debt and typically does not appear on credit reports — but it does encumber the property and may complicate refinancing. EEM programs usually exclude the energy-improvement portion from DTI calculations because expected energy savings offset the additional payment.

Can I combine multiple financing sources for one installation?

Generally you use one primary financing source for the installation cost and layer rebates and credits on top. You typically cannot use two loans to finance the same expense. However, you can apply rebate checks and any remaining state tax credit refunds to principal pay-down on your primary loan, materially reducing total interest paid.

What happens to PACE if I sell my house?

In most R-PACE programs, the assessment transfers to the new owner along with the property. You're not obligated to pay off the balance at sale, but you must disclose the assessment to buyers. Some buyers accept the assessment; others negotiate price reductions or seller payoff. Some jurisdictions have moved toward requiring seller payoff at sale, so check your specific program terms before listing.

How does TPO leasing change the math vs. ownership?

Under TPO, the corporate lessor claims §48 (6%–30% with bonuses) and prices the lease such that part of that benefit reaches the homeowner via reduced monthly payments. The homeowner does not own the equipment for the lease term and does not claim a tax credit. For households that wouldn't have absorbed the full §25D credit anyway, TPO can be efficient; for high-tax-liability households, ownership financing without §25D is the relevant comparison and TPO is competitive but not automatically preferred.

Geothermal financing in 2026 is more constrained than 2025 due to the §25D termination, but multiple pathways remain — GSE renovation mortgages, FHA EEM, R-PACE in active markets, utility rebates and on-bill financing, manufacturer dealer financing, credit union green loans, HEEHRA and HOMES rebates where launched, and TPO leasing. Cost outcomes depend heavily on state and utility program availability. The EPA published efficiency range — 30%–70% on heating costs and 20%–50% on cooling costs versus conventional systems, depending on climate zone and the displaced fuel — applies regardless of how the install is financed. For current state-program status and updated installation cost benchmarks, see the state-by-state incentives guide and the geothermal ROI calculator.