Snohomish PUD vs. PSE: Insulation Rebates Compared for 2026

Quick Answer: Which Utility Rebate Saves You More?

Both Snohomish PUD and PSE offer meaningful insulation rebates in 2026, but the structure and amounts differ. PSE’s program covers up to 50% of project costs for electrically heated homes, while Snohomish PUD offers per-square-foot rebates that typically cover $600 to $1,800 on a standard attic project. Both programs stack with the federal 25C tax credit (up to $1,200), and both offer enhanced assistance for income-qualified households.

Key takeaway: Which program is “better” depends entirely on your home’s heating type and project size. PSE’s percentage-based rebate tends to pay more on larger projects for electric-heat homes. Snohomish PUD’s program is more predictable and its low-income weatherization can cover 100% of costs.

Side-by-Side Comparison: Snohomish PUD vs. PSE

Here’s the head-to-head breakdown that most homeowners are looking for:

Feature	Snohomish PUD	PSE (Puget Sound Energy)
Rebate structure	Per square foot of insulation	Percentage of total project cost
Standard rebate (electric heat)	$0.50–$1.50 per sq ft	Up to 50% of project cost
Standard rebate (gas heat)	Lower tier / Cascade Natural Gas	Up to 30% of project cost
Typical rebate on $3,000 project	$600–$1,800	$900–$1,500
Income-qualified program	Up to 100% coverage	Up to 95% coverage
Income threshold	At or below 80% AMI	At or below 80% AMI
Free energy audit	Yes	Yes (or low cost)
Application deadline	Within 60 days of completion	Within 60 days of completion
Processing time	4–6 weeks	6–8 weeks
Eligible insulation types	Attic, floor, wall, duct	Attic, floor, wall, duct
Minimum R-value requirement	Must meet WA energy code	Must meet WA energy code

Both programs require the work to be performed in an existing home (not new construction) and the insulation must bring the space up to or above Washington state energy code: R-49 for attics and R-30 for floors over crawl spaces.

Which Cities Are Served by Each Utility?

This is the first thing to figure out, because your electric utility determines which rebate program you’re eligible for. Here’s the breakdown across the Puget Sound region:

Snohomish PUD Service Area

• Mountlake Terrace, Edmonds, Lynnwood
• Bothell (Snohomish County side), Mill Creek, Mukilteo
• Everett, Marysville, Lake Stevens
• Some areas of Shoreline north of 145th Street

PSE Service Area

• Kent, Auburn, Covington, Renton
• Federal Way, Tukwila, SeaTac
• Kirkland, Woodinville, parts of Bothell (King County side)
• Parts of unincorporated King County

The Bothell Split

Bothell sits on the King County / Snohomish County line, which means some Bothell residents are PSE customers and others are Snohomish PUD customers. If you’re in Bothell, check your electric bill to confirm your provider before applying. We work with homeowners on both sides of that line regularly.

Not sure which utility you have? Look at your electric bill. The company name is right at the top. If you’re still uncertain, give us a call when you request your free estimate and we’ll confirm it for you.

Cascade Natural Gas: A Third Option for Gas-Heated Homes

If your home is heated with natural gas through Cascade Natural Gas (common in parts of Pierce County and some King County areas), there’s a separate incentive program that’s easy to overlook.

Upgrade	Cascade Natural Gas Rebate	Requirements
Attic insulation	$0.50–$1.00 per sq ft	Upgrade to R-38 or higher
Floor insulation	$0.50–$1.00 per sq ft	Over unheated crawl space
Wall insulation	$0.50–$1.00 per sq ft	Previously uninsulated cavities

Cascade Natural Gas rebates are smaller than PSE or Snohomish PUD incentives, but they still stack with the federal tax credit. On a 1,200 sq ft attic, that translates to $600 to $1,200 back from the utility alone.

The Federal 25C Tax Credit: Stacks with Every Utility Rebate

Regardless of whether you’re a PSE or Snohomish PUD customer, the federal 25C Energy Efficient Home Improvement Credit applies to every qualifying insulation project. This is the second layer of savings that brings your true cost down significantly.

Detail	Amount
Credit percentage	30% of your out-of-pocket cost
Annual cap for insulation	$1,200
Applies to	Materials and labor
How you claim it	IRS Form 5695, filed with your federal return
Rollover	No, resets each calendar year

Critical detail: The 25C credit is calculated on what you pay after the utility rebate, not the full project cost. That’s an important distinction because it affects your math. For a detailed breakdown of PSE-specific rebate mechanics, see our full PSE insulation rebates guide for 2026.

How Rebates Stack: Real Cost Examples

Here’s what the numbers actually look like when you combine utility rebates with the federal tax credit.

Example 1: Snohomish PUD Customer in Mountlake Terrace (Electric Heat)

Line Item	Amount
Attic insulation to R-49 (1,200 sq ft)	$3,000
Snohomish PUD rebate (~$1.00/sq ft)	-$1,200
Out-of-pocket after rebate	$1,800
Federal 25C credit (30% of $1,800)	-$540
True cost	$1,260

That’s a 58% total savings on a project that will reduce heating bills for 20 to 30 years.

Example 2: PSE Customer in Kent (Electric Heat)

Line Item	Amount
Attic insulation to R-49 (1,200 sq ft)	$3,000
PSE rebate (50%)	-$1,500
Out-of-pocket after rebate	$1,500
Federal 25C credit (30% of $1,500)	-$450
True cost	$1,050

That’s a 65% total savings on the same project scope.

Example 3: Income-Qualified Snohomish PUD Customer

Line Item	Amount
Attic + floor insulation	$5,200
SnoPUD low-income weatherization (100%)	-$5,200
True cost	$0

The income-qualified programs are the most underused rebates in the Puget Sound area. A household of four earning under roughly $82,000 in Snohomish County likely qualifies. It is always worth checking.

Want to see numbers based on your specific project? Our insulation cost calculator generates an estimate in about 30 seconds.

Step-by-Step: How to Apply for Each Program

Snohomish PUD Rebate Process

1. Confirm you’re a SnoPUD customer by checking your electric bill
2. Schedule a free energy audit through Snohomish PUD’s website or call their conservation hotline
3. Get your insulation estimate from a licensed contractor, documenting current R-values, target R-values, and square footage
4. Complete the insulation work with full before-and-after photo documentation
5. Submit your rebate application within 60 days of project completion, attaching contractor invoice, proof of payment, and photos
6. Receive your rebate in approximately 4 to 6 weeks

PSE Rebate Process

1. Confirm PSE is your electric or gas provider
2. Check for a PSE Home Energy Assessment (free or low-cost, creates a paper trail for your application)
3. Get your contractor estimate with detailed scope, R-values, and materials
4. Have the work completed by a licensed insulation contractor
5. Submit your completed application to PSE within 60 days with all documentation
6. Receive your rebate in approximately 6 to 8 weeks

For both programs, the rebate application is separate from the federal tax credit. You claim the 25C credit when you file your federal taxes using IRS Form 5695.

Income-Qualified Programs: Enhanced Rebates Most People Miss

Both utilities offer significantly enhanced assistance for income-qualified households, and the income thresholds are higher than most people realize.

Household Size	Approximate Income Threshold (80% AMI)
1 person	~$52,000
2 people	~$64,000
3 people	~$72,000
4 people	~$82,000

Through Snohomish PUD’s low-income weatherization, qualifying homeowners can have their entire insulation project covered at no cost. PSE’s Weatherization Assistance Program covers up to 95% of project costs for eligible households. These programs are funded through ratepayer contributions and federal weatherization dollars, and they’re specifically designed for homeowners who need the help most.

Pro tip: Even if you think you might be slightly over the income limit, it’s worth applying. The thresholds adjust annually, and both utilities evaluate eligibility on a household basis, not individual income.

Common Mistakes That Disqualify Rebate Applications

We’ve processed hundreds of rebate applications over the years. Here are the mistakes that get applications rejected or delayed:

• Missing before-and-after photos — Both utilities want visual proof of the existing conditions and the completed work. Depth markers showing insulation thickness are especially important.
• Vague contractor invoices — The invoice needs to specify the insulation type, R-value achieved, square footage covered, and total cost broken down by materials and labor. A one-line invoice that says “insulation - $3,000” will get kicked back.
• Submitting past the 60-day window — Both PSE and Snohomish PUD require applications within 60 days of project completion. Miss that window and you lose the rebate entirely.
• Work done before the energy audit — For income-qualified programs especially, starting work before the utility has approved the project can disqualify you. Get the audit and approval first.
• New construction or additions — Neither program covers insulation in new construction. Additions fall into a gray area and should be confirmed with the utility before starting.
• Not meeting code requirements — The insulation must bring the space up to current Washington state energy code. Partial upgrades that fall short of R-49 in attics or R-30 in floors may not qualify.

How Green Attic Handles the Paperwork

Rebate paperwork is not glamorous, but it directly affects what you pay. On every insulation project we complete, we handle the rebate documentation from start to finish:

• Before-and-after photos with depth markers and R-value documentation
• Detailed invoices formatted to meet utility requirements, with materials, labor, R-values, and square footage all broken out
• Application submission within the required timeline
• Follow-up if the utility has questions or requests additional documentation

Sadeq and the team have been through this process enough times that we know exactly what PSE and Snohomish PUD want to see. Getting it right the first time means your rebate processes without delays or rejections.

The Bottom Line: Which Rebate Is Better?

Neither program is universally better. It comes down to where you live and what your home looks like:

• If you’re in Snohomish County (Mountlake Terrace, Edmonds, Lynnwood, Bothell north), Snohomish PUD’s per-square-foot rebate gives you predictable savings, and the low-income weatherization program is one of the most generous in the state.
• If you’re in King County (Kent, Renton, Auburn, Federal Way, Kirkland), PSE’s percentage-based rebate tends to pay more on larger projects, especially for electrically heated homes where the 50% tier applies.
• Either way, the federal 25C tax credit stacks on top and adds another $400 to $1,200 in savings depending on your out-of-pocket cost.

The best time to take advantage of these programs is now. Both utilities allocate rebate funds on annual budget cycles, and funding does run out later in the year. Spring and summer applications process fastest and have the best chance of full funding.

Ready to see what your project would cost after rebates?

1. Use our insulation cost calculator to get an instant estimate based on your home’s details
2. Request your free estimate and we’ll confirm which rebates apply, assess your home, and handle all the paperwork
3. We serve both PSE and Snohomish PUD territories across King County and Snohomish County, from Kent to Mountlake Terrace and everywhere in between