Energy Trust of Oregon Insulation Rebates: What Portland Homeowners Can Still Claim in 2026

If you’ve been putting off insulating your attic or crawl space because of the upfront cost, there’s good news for Portland-area homeowners: the Energy Trust of Oregon still offers cash incentives that can cover a meaningful chunk of the bill. With the federal 25C insulation tax credit having expired on December 31, 2025, these local rebates are now the primary way to bring down the cost of a comfort upgrade. Here’s how they work in 2026 and how to make sure you qualify.

What the Energy Trust Actually Pays

Energy Trust of Oregon offers per-square-foot incentives for adding insulation to under-insulated homes. As a rough guide, attic insulation incentives run about $1.25–$1.50 per square foot, floor (crawl space) insulation about $0.75–$1.25 per square foot, and wall insulation about $1.50–$2.25 per square foot. On a typical 1,000-square-foot Portland attic, that can translate into several hundred dollars off the project. Exact amounts depend on how much insulation you’re adding and your home’s starting R-value, so the savings are larger when you’re going from very little insulation to code-level coverage.

Who Qualifies

These incentives are funded through participating utilities, so eligibility comes down to who provides your power and gas. You generally qualify if you’re a residential customer of PGE, Pacific Power, NW Natural, or Cascade Natural Gas. Your home also needs to be currently under-insulated — the program is designed to reward real improvements, not top-ups on already-efficient homes. For attics, that usually means starting well below the recommended R-38 to R-60 range that performs best in our climate. A quick check of your utility account and a look in your attic will tell you most of what you need to know.

Attic vs. Crawl Space: Where the Money Goes Furthest

Many Portland homes built before the 1990s are under-insulated in both the attic and the crawl space, but the attic is usually where you’ll feel the biggest difference fastest. Heat rises, and an under-insulated attic lets it escape all winter while letting summer heat pour in. That said, if your floors are cold in winter and your crawl space is vented and uninsulated, adding floor insulation can dramatically improve comfort on the main level. Because the per-square-foot incentive is similar for both, the right starting point is wherever your home is leaking the most energy — which an on-site assessment can pinpoint.

How to Claim Your Rebate

The process is simpler than most people expect. In most cases, the incentive is handled through a participating contractor: the work is completed to program specifications, the paperwork is submitted on your behalf, and the rebate is applied or mailed to you afterward. To make sure nothing gets left on the table, confirm your utility eligibility before the job starts, keep your project invoice, and verify that the insulation R-values installed meet the program’s minimums. If you’d rather understand the full picture before committing, our rebates and incentives overview walks through current options for Oregon homeowners.

Don’t Count on the Expired Federal Credit

It’s worth repeating clearly: the federal 25C Energy Efficient Home Improvement Credit, which previously gave homeowners a tax credit for insulation, expired on December 31, 2025. If you see older articles or contractor pages still advertising it for 2026, they’re out of date. Plan your budget around the Energy Trust incentives that are actually available, and treat any other savings as a bonus. Pairing a rebate with the long-term reduction in your heating and cooling bills is where the real return shows up.

Insulation is one of the few home upgrades that pays you back every single month in lower energy bills and steadier indoor temperatures — and right now, Energy Trust incentives make the timing especially good. Forest Fresh Heating & Cooling helps Portland-area homeowners assess their attics and crawl spaces, identify which rebates they qualify for, and get the paperwork handled. Ready to find out what your home qualifies for? Request a free estimate or call us at (503) 941-6416.