Is Plug-In Solar Legal in Washington?
Low rates, gray area Avg rate ~11¢/kWh
Last verified: June 14, 2026 · source data
A grid-tie kit feeds power into your home while the sun is up, which lowers what you draw from the utility. It shuts down in a blackout by design, so that line workers are not exposed to your power.
A power station does the opposite. It will run your fridge in an outage and it lowers nothing on an ordinary day.
Most people who arrive on this page want the first one. If you want backup as well, that is a second purchase, not a bigger version of the first.
→ For daily bill offset: balcony solar kits
→ For outages: power stations
Two systems, one job. For plug-in solar that feeds your home and lowers the bill, the head-to-head worth reading is EcoFlow Stream vs Anker SOLIX — two balcony systems doing that same job.
A different job: a portable power station is backup power for an outage. It is not a substitute for a grid-tie kit and it does not lower your bill. If that is what you are after: Anker C1000 vs EcoFlow DELTA 3 · C1000 vs C2000 · Anker vs EcoFlow at brand level
Among the lowest U.S. electricity rates, so payback is slower. No specific plug-in rules; check your utility.
Before you buy in Washington
Call your electric utility and ask: (1) do they allow small plug-in / behind-the-meter grid-tied solar, and (2) is any notification or interconnection form required? Stay within the wattage they specify, use a UL-listed microinverter, and keep written confirmation.
Then estimate your numbers with our savings calculator (pre-loaded with Washington's rate).
Ready to start? If you want backup power for outages rather than a grid-tied kit, see our power stations guide →
Nearby states: Oregon · Idaho · Alaska · see the full 50-state tracker.
Frequently asked questions
Is plug-in solar legal in Washington?
Plug-in (balcony) solar is legal to install in Washington, but there is no plug-in-specific state law as of June 2026 — it falls under your utility’s standard interconnection rules. Average residential electricity rate is around 11¢/kWh. Confirm wattage limits with your utility before buying.
Do I need utility permission in Washington?
It depends on your state's rules and your utility. The safe path in Washington is to use a UL-listed (UL 3700) microinverter and check your utility's interconnection policy before you install; see the status for Washington above for specifics.
Is there a bill to legalize plug-in solar in Washington?
No bill specific to plug-in solar was in the record when we last reviewed Washington, on June 14, 2026. If that changes, we update this page and the dataset.
How much can plug-in solar save in Washington?
Washington’s average residential electricity rate is around 11¢/kWh. Estimate your own savings with our free savings calculator, pre-loaded with Washington’s rate.