Why Columbus utility rebates still matter for foam projects after Section 25C ended

What changed in 2026

The Section 25C federal insulation tax credit, originally extended through 2032 by the Inflation Reduction Act of 2022, was terminated for property placed in service after December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025). Columbus homeowners completing spray foam projects in 2026 onward do not qualify for the federal credit; the most a 2026 project can do at the federal level is verify the project was eligible under the old rules if it was completed before the December 31, 2025 cutoff.

Despite this, the foam-project value math for Columbus homeowners has not changed dramatically. The federal credit at peak provided 30 percent of qualifying insulation costs up to $1,200 per year, or roughly $1,000-$1,200 for typical Columbus attic-plus-rim-joist projects. State and utility rebate programs in the Columbus metro can collectively replace 50-100 percent of that credit value when stacked.

The current 2026 Columbus utility rebate landscape

Three primary sources of Columbus-area utility rebates as of mid-2026. Verify current offer details directly with each utility before relying on the math; rebate programs change rounds frequently.

AEP Ohio residential rebates. AEP Ohio serves electric in Franklin County and most of the surrounding Columbus metro. The residential efficiency rebate program covers insulation upgrades that meet specific R-value targets, typically $0.10-$0.30 per square foot of insulation. For a 1,500 sqft attic upgrade meeting the R-49 Columbus Zone 5A target, that runs $150-$450 in direct rebate. Application is post-install via the AEP Ohio customer portal.

Columbia Gas of Ohio rebates. Columbia Gas, the natural gas utility for most of Greater Columbus, runs a parallel residential efficiency rebate program, including its WarmChoice income-qualified weatherization offering. Coverage tier and amounts for market-rate customers are typically in the same range as AEP Ohio. Apply through the Columbia Gas customer portal.

Ohio Home Weatherization Assistance Program (HWAP) for income-qualifying households. The state-run program covers larger shares of weatherization costs for households at or below 200 percent of federal poverty level. Coverage can reach 100 percent of project cost for qualifying homes. Check Ohio Department of Development for current eligibility and application.

The current stacking math on a typical Columbus attic foam project

Consider a 1,500 sqft attic in a Clintonville home, closed-cell foam at the roof deck (R-49 Zone 5A target), $6,200 project cost.

| Source | Amount | |---|---| | Project cost | $6,200 | | AEP Ohio residential efficiency rebate (Zone 5A R-49 target hit) | $300 (estimated, verify current offer) | | Project cost after rebate | $5,900 |

That is roughly half the value of the lost Section 25C credit ($1,000-$1,200 at peak). The gap is real, but the rebate makes the math closer to break-even than no-rebate.

For homeowners weighing whether to scope the project at all, the utility rebate generally moves the payback math by 3-6 months on Columbus AEP Ohio electric and Columbia Gas of Ohio gas rates. Not transformative; useful.

Three things to do before signing a foam contract in 2026

1. Document the rebate program at quote time. Ask the foam contractor to flag rebate-qualifying scope on the line-item quote. R-value targets and installation specifications drive rebate eligibility; the right paperwork at install time makes the post-install rebate application much smoother.

2. Get the manufacturer-stamped closeout package. AEP Ohio, Columbia Gas, and HWAP all require product specs (manufacturer name, ICC-ES report number, R-value certification) plus installation photos. The closeout package delivered after every install includes all of this; budget contractors who skip this paperwork will block you from claiming the rebates.

3. Apply within 90 days of install. AEP Ohio and Columbia Gas have submission deadlines that vary by program round (typically 60 to 120 days after install). Filing within 30 days of install gets the rebate processed inside 60-90 days; later filings can take 4-6 months and risk being missed during a round closure.

What is not on the list

Three things that get asked about but don't apply to most 2026 Columbus foam projects.

Federal tax credits. Section 25C, 25D, 45L, 179D were all modified by the OBBB Act. Talk to a CPA about specifics if your project might have been placed in service before December 31, 2025 and the credit not yet claimed.

PACE (Property Assessed Clean Energy) financing. Available in some Ohio counties but not currently active in Franklin County. Check directly with your county auditor's office.

Local property-tax abatements. Columbus has historically run abatement programs for certain housing and efficiency-related improvements, but most target new residential construction or larger projects rather than retrofit insulation. Check the City of Columbus Department of Development for current programs.

Columbus real-world example: 2026 vs 2024 same-project math

A typical Columbus 1,500 sqft attic spray foam project, $6,200 cost.

2024 math (with Section 25C): - Project cost: $6,200 - Section 25C credit: -$1,200 (30% of qualifying portion, capped) - AEP Ohio rebate (then $0.15/sqft): -$225 - Net cost: $4,775

2026 math (post-25C): - Project cost: $6,200 - Section 25C credit: $0 - AEP Ohio rebate (current $0.20/sqft, approximate): -$300 - Net cost: $5,900

The gap is $1,125 ($5,900 vs $4,775), almost exactly the value of the lost federal credit minus the modest rebate program increase.

For Columbus homeowners scoping foam in 2026, the right framing is: utility savings still drive the long-term value (4-7 year typical payback on attic foam at current Columbus rates, helped by the long Zone 5A heating season), and the rebate program covers the short-term incremental cost-down. The federal credit is gone; the project value is still there.

Free phone consultations include current-rebate-program triage. We track AEP Ohio and Columbia Gas of Ohio program rounds because they meaningfully affect quote conversations.