As of the first quarter of 2023, Washington State has 604 MW of solar power electricity generation.[1] This is an increase from about 300 MW in 2021 and 27 MW in 2013.
Washington pays a feed-in tariff of up to $5,000/year of 15 cents/kWh, which is increased by a factor of 2.4 if the panels are made in the state and by an additional 1.2 if the inverters are made in state.[2][3]