In July 2021, the Department of Energy (DOE) kicked off the Summer of Solar 2021–a national campaign aimed at progressing the Biden Administration’s goal of achieving net zero carbon emissions by 2050 through the expansion of solar energy. While the cost of solar has continued to decrease each year in the US, delays in the solar permitting process have made it difficult for the US to achieve costs as low as some other countries, such as Australia. To kick off the Summer of Solar, the DOE launched a tool to help expedite this process: the Solar Automated Permit Processing Plus (SolarApp+).