Fig. 4
From: A harmonized dataset of ground-mounted solar energy in the US with enhanced metadata
The most recently available NAIP imagery dates within Google Earth Engine. The color gradient indicates the within-year acquisition date, ranging from earlier (lighter shade) to later (darker shades) in the calendar year. These dates represent the temporal limitation of panel-row delineation and array boundary enhancement based on available imagery (through 2023). Note that NAIP 2023 was being processed at the time of writing and has been included for states made available in Google Earth Engine by December 2024. Grey areas are either prohibited flight spaces for national security reasons (e.g., S. Nevada), or where the most recent imagery was prior to January 2021 (e.g., W. Washington).
