Last Updated: May 19, 2026 | Reviewed by: Dylan DeSantis, SolarMetric
Quick Answer
Solar panels cost an average of $2.82 per watt installed in Oregon — $28,200 for a typical 10 kW system. The 30% federal residential solar tax credit was eliminated in July 2025. Oregon homeowners can still access cash incentives from the Energy Trust of Oregon (up to $1,800 for most customers), a property tax exemption, full retail net metering, and a competitive installer market with below-average system prices. Payback periods run approximately 11–14 years — longer than sunnier states, largely because Oregon’s electricity rates are below the national average.
⚠️ Federal Tax Credit Update (Important for 2026)
The 30% federal residential solar tax credit (Section 25D) was terminated by the One Big Beautiful Bill Act, signed into law on July 4, 2025. It no longer applies to solar systems installed on or after January 1, 2026. Homeowners who completed their Oregon installation in 2025 can still claim the credit on their 2025 tax returns via IRS Form 5695.
For 2026 installations:
– Homeowner-purchased systems: No federal income tax credit available.
– Solar leases and PPAs: Installers retain the commercial ITC (Section 48E). This may reduce lease rates but is not a credit you receive.
– Battery storage: The federal residential battery credit was also eliminated. Oregon’s Energy Trust program may cover some battery incentives depending on utility and funding availability.
Oregon Solar at a Glance
| Metric | Oregon Data |
|---|---|
| Average cost per watt | $2.82/W |
| Typical 10 kW system (installed cost) | $28,200 |
| Energy Trust of Oregon cash incentive | Up to $1,800 (Portland General Electric / Pacific Power customers) |
| Property tax exemption | Full exemption statewide (through 2026) |
| Sales tax | None (Oregon has no sales tax) |
| Net cost after Energy Trust incentive | ~$26,400 |
| Average electricity rate — Oregon (2025) | $0.126/kWh |
| Average peak sun hours — Portland | 4.5 PSH |
| Peak sun hours — Medford / Southern Oregon | 5.5 PSH |
| Peak sun hours — Bend / Central Oregon | 5.3 PSH |
| Net metering | Full retail rate (up to 25 kW) |
| Federal ITC for 2026 installations | Not available (Section 25D terminated) |
Cost data: EnergySage Oregon Market Report (May 2026). Rate: EIA residential average for Oregon (2025).
Cost by System Size in Oregon
Oregon has no state sales tax, which reduces upfront costs automatically compared to most states. These are installed costs at the $2.82/W state average.
| System Size | Installed Cost | After Energy Trust Incentive ($1,800) | Annual Savings (Portland)† |
|---|---|---|---|
| 6 kW | $16,920 | $15,120 | $1,368 |
| 8 kW | $22,560 | $20,760 | $1,824 |
| 10 kW | $28,200 | $26,400 | $2,280 |
| 12 kW | $33,840 | $32,040 | $2,735 |
†Annual savings: system kW × 4.5 PSH × 365 days × 0.80 efficiency × $0.126/kWh (statewide average). Energy Trust incentive applies to PGE and Pacific Power customers only; check eligibility at energytrust.org/solar.
Oregon Solar Incentives in 2026
Oregon’s incentive landscape is more modest than eastern seaboard states, but the absence of a state sales tax and the Energy Trust of Oregon program provide meaningful upfront savings.
Energy Trust of Oregon Cash Incentive
The Energy Trust of Oregon is an independent nonprofit that administers energy efficiency and renewable energy programs on behalf of Portland General Electric (PGE) and Pacific Power customers. Residential solar cash incentives in 2026 are approximately:
- Portland General Electric customers: ~$0.20 per watt of installed capacity, up to $1,800 for a standard residential system
- Pacific Power customers: Similar structure; check energytrust.org for current rates as they are updated periodically
The incentive is paid directly to your installer and applied as a discount on your contract price — you do not need to apply separately. Your installer handles the Energy Trust paperwork at installation. Energy Trust also has an income-qualified program with higher incentives for households at 80% or below Area Median Income.
If you are an EWEB (Eugene), Springfield Utility Board, or other municipal utility customer: You are not served by Energy Trust. Check with your utility directly for any available solar programs.
Oregon Property Tax Exemption
Under ORS 307.175, residential solar systems are exempt from property tax assessment in Oregon. The added home value from solar will not increase your property tax bill. This exemption currently has a sunset provision — check the Oregon Department of Revenue for the current status of the exemption for your installation year.
No Oregon Sales Tax
Oregon has no state sales tax, which automatically saves 8–10% compared to purchasing a solar system in a state like California or Arizona. On a $28,200 system in a state with 8% sales tax, you’d pay $2,256 more. This savings is built in — no application required.
Oregon Residential Energy Tax Credit (RETC)
Oregon’s residential energy tax credit program has been dormant since 2018 and is not currently available for solar installations. Do not rely on this program when calculating your return.
Oregon Solar by Region: Why Location Matters a Lot Here
Oregon has the widest variation in solar viability of any state in the continental US. The Cascade Mountains divide the state into two very different solar environments.
| Region | City | Peak Sun Hours | Annual kWh (10 kW) | Annual Savings | Payback (10 kW, $26,400 net) |
|---|---|---|---|---|---|
| Western Oregon (cloudy) | Portland | 4.5 PSH | 13,140 kWh | $1,655/yr | ~15.9 years |
| Western Oregon | Salem | 4.8 PSH | 14,016 kWh | $1,766/yr | ~14.9 years |
| Western Oregon | Eugene | 4.8 PSH | 14,016 kWh | $1,766/yr | ~14.9 years |
| Southern Oregon (sunny) | Medford | 5.5 PSH | 16,060 kWh | $2,024/yr | ~13.0 years |
| Central Oregon | Bend | 5.3 PSH | 15,476 kWh | $1,950/yr | ~13.5 years |
| Eastern Oregon | Pendleton | 5.1 PSH | 14,892 kWh | $1,876/yr | ~14.1 years |
Annual savings based on $0.126/kWh statewide average rate. Portland PGE customers using 2025 rate of ~$0.130/kWh would see slightly better savings.
The key takeaway: In Portland and western Oregon, solar is financially marginal — not because the technology doesn’t work, but because electricity rates are low and sun hours are limited. Homeowners in Medford, Bend, or eastern Oregon see significantly better returns.
Is Solar Worth It in Oregon in 2026?
Verdict: Depends heavily on your location and electricity bill — solar is a clear winner in southern and central Oregon, but a close call in the Portland area.
Oregon sits in an awkward middle ground for solar economics in 2026. The state has the political and environmental infrastructure to support solar (strong net metering, incentive programs, no sales tax), but below-average electricity rates ($0.126/kWh vs. $0.139 national average) and notably low sun hours in the Willamette Valley dampen the financial case.
Solar is a good financial decision in Oregon if:
– You are in Medford, Bend, Klamath Falls, or eastern Oregon
– Your electricity bill consistently exceeds $150/month
– You are a PGE or Pacific Power customer eligible for Energy Trust incentives
– You have a south-facing roof with minimal shading
Solar is financially marginal in Oregon if:
– You are in Portland, Salem, or Eugene with a low electricity bill (under $100/month)
– You have a heavily shaded or north-facing roof
– Your home is served by a municipal utility with no additional incentive programs
– You are planning to move within 8–10 years
The environmental case is strong regardless. Oregon’s grid is increasingly clean (hydro and wind dominate), which actually reduces the carbon benefit of rooftop solar per kWh compared to coal-heavy grids — but the state’s stated clean energy goals still value rooftop solar production.
What Affects Solar Cost in Oregon
Roof pitch and complexity: Oregon homes, especially in the Portland metro, often have complex rooflines. A multi-plane roof with dormers can add $2,000–$4,000 to installation costs versus a simple gable roof.
Microinverters vs. string inverters: Portland’s frequent cloud cover and tree shading make microinverters (Enphase IQ8 series) especially valuable in western Oregon. Budget an additional $500–$2,000 for microinverters vs. a standard string inverter.
Panel selection: High-efficiency panels maximize output on smaller or partially shaded roofs — particularly relevant in the cloudy Willamette Valley where every watt of capacity matters.
Battery storage: Battery economics in Oregon are primarily about resilience (power outages from ice storms and wind events are common in western Oregon) rather than financial return. Budget $10,000–$13,000 for a Tesla Powerwall 3 or equivalent.
Top Solar Companies in Oregon
| Installer | Service Area | Key Strength |
|---|---|---|
| Sunrun | Portland metro, Salem, Eugene | Lease/PPA options, national installer |
| Enphase-certified installers | Statewide | Strong for microinverter systems in cloudy Portland |
| Elemental Energy | Portland metro | Local OR/WA company, B Corp certified |
| A&R Solar | Portland, Seattle (WA) | Pacific Northwest regional specialist |
| Northwest Wind & Solar | Bend, Central Oregon | Central/Eastern OR specialist |
| SolarWorld (dealer network) | Statewide | Oregon-manufactured panels (Hillsboro, OR) |
Compare Oregon Solar Installers → Get Free Quotes
Oregon Solar FAQ
How much do solar panels cost in Portland, Oregon?
A typical 8–10 kW system in Portland costs $22,500–$28,200 before incentives. Portland General Electric customers can subtract an ~$1,800 Energy Trust cash incentive, bringing a 10 kW system to approximately $26,400. There is no state sales tax. With Portland’s 4.5 peak sun hours, annual savings are approximately $1,600–$2,000/year at current PGE rates.
Is solar worth it in Portland specifically?
It’s a close call financially. Portland has low sun hours and below-average electricity rates, which extend payback periods to 14–16 years on an owned system. In southern Oregon (Medford, Ashland) or Bend, the case is significantly stronger.
Does Oregon have a state solar tax credit?
Oregon’s Residential Energy Tax Credit (RETC) program is not currently active. The Energy Trust of Oregon cash incentive program (for PGE and Pacific Power customers) is the primary state-level incentive available in 2026.
What is the Energy Trust of Oregon and how do I access its solar incentives?
The Energy Trust of Oregon is a nonprofit that administers energy programs for PGE and Pacific Power customers. Their solar cash incentive (~$0.20/watt, up to $1,800) is applied automatically through your installer — you don’t need to apply separately. Confirm your utility eligibility at energytrust.org/solar before signing an installation contract.
Sources
- EnergySage Oregon Solar Market Report, May 2026
- U.S. Energy Information Administration (EIA) — Residential Electricity Rates, Oregon 2025
- NREL National Solar Radiation Database — Oregon peak sun hours by city
- Energy Trust of Oregon — Residential Solar Incentive Program (2026)
- Oregon Department of Revenue — Property Tax Exemption, ORS 307.175
- Oregon Public Utility Commission — Net Metering Rules
- IRS — Section 25D termination per One Big Beautiful Bill Act (July 2025)
Get Free Solar Quotes in Oregon →
See also: Solar Panel Cost Guide | Is Solar Worth It? | Solar Cost Calculator