This report provides insight into Wood Mackenzie's first ten-year US solar PV outlook. National level data was published as part of SEIA's 2019 Solar ITC Impact Analysis in September 2019. The report details key market trends and highlights main state markets in each segment. We present the US forecast under two different scenarios: base case with ITC step down to 10% by 2023, and the ITC extension scenario, where ITC is extended to 30% till 2030. Going forward, Wood Mackenzie plans to publish the 10-year US solar PV outlook on an ongoing basis. Our Power & Renewables reports and data provide deep insight into the current and future state of electricity generation.