The median size of residential PV systems in the US in 2021 reached 7.0kW, while non-residential system sizes have plateaued. Image: Sunrun.
Residential solar systems in the US continue to grow in size at the same time as battery attachment rates increase and the median installed price of all type of PV projects drops again, albeit only slightly.
Those are some of the key findings of the Lawrence Berkeley National Laboratory’s (LNBL) annual solar report, Tracking the Sun. The report provides an overview of key trends in the US market based on project-level data for roughly 2.5 million systems installed through year-end 2021, as well as preliminary data for the first half of 2022.
LBNL said residential PV systems continue to grow in size, with the median in 2021 reaching 7.0kW, while non-residential system sizes have plateaued. The laboratory defines…