Solar Panel Cost in Portland, OR (2026 Estimate)

BySunMetricLab Editorial Team·Independent solar research and calculators

Data last updated September 10, 2026

Portland averages about 3.9 peak sun hours a day (below the national average, slightly below the Oregon average of 4.0), and pairs with Oregon's approximate residential rate near 13¢/kWh. In the model used here, an 8 kW system produces roughly 9,110 kWh a year and trims about $1,200 off annual electricity costs, paying back its net cost in about 14.2 years (versus 13.8 years for Oregon as a whole). Local shading, roof, and your utility's export terms move the real figure.

Estimated system cost and payback in Portland

Costs assume roughly $3.00/watt installed; the net column applies a 30% federal credit for comparison with quotes that include it. Savings use Portland's sun hours and Oregon's rate.

The 30% federal Residential Clean Energy Credit ended for systems paid for after December 31, 2025 under the 2025 federal budget law. Net-after-credit figures apply only if you still qualify (for example a 2025 expenditure, or a leased system where the installer passes a credit through). Confirm with a tax professional.

Net metering and utilities around Portland

Oregon requires every utility, investor-owned and consumer-owned alike, to offer net metering for residential systems up to 25 kW. Portland General Electric and Pacific Power credit exports at the full retail kilowatt-hour rate and roll unused credits forward month to month. Once a year, at the end of March, any credits still on the account are not paid out to the customer but transferred to the utility's low-income bill assistance program, so an oversized system gives its surplus away.

Portland General Electric serves Portland, Salem and the Willamette Valley core, Pacific Power covers Bend, Medford, Corvallis, Albany and the coast, and Idaho Power serves the far east. Eugene is served by EWEB, and dozens of public utility districts, municipal systems and cooperatives serve the rest, many with rates well below the investor-owned utilities thanks to Bonneville Power Administration hydropower. Because net metering credits at retail, a PGE customer paying higher rates saves more per kilowatt-hour than a PUD customer with cheap hydro. PGE offers time-of-day pricing that can raise the value of evening consumption shifted to a battery. Cloudy winters mean western Oregon arrays earn most of their credits between May and September, which is where the March annual reset comes into play.

For the full state picture, including incentives, property and sales tax treatment and the complete net metering notes, see the Oregon solar cost page.