The Energy Department’s Berkeley Lab’s published its latest Tracking the Sun annual report, which is based on data from roughly 2.5 million systems installed nationally through year-end 2021. It includes preliminary data for the first half of 2022.
Key findings include:
Residential systems are getting larger. Residential system sizes have been rising steadily over the past two decades, the report said. This is being driven by declining costs and rising module efficiencies.