Data Explorer Updates
November 16, 2018
Added coverage for Puerto Rico.
May 9, 2018
Project Sunroof refreshed data coverage and updated some calculations. Specific changes include:
- Increased building coverage from 60M to 65M.
- Updated federal, state, and utility incentives.
- Made several improvements to the energy production estimates, including better fitting of solar panels to the available roof space. In many cases, this results in the estimated potential of buildings increasing above previous estimates by 30%.
May 22, 2017
Added a data layer showing the locations of existing solar installations.
February 28, 2017
Project Sunroof expanded data coverage, included new data to make the calculations more accurate, and updated some calculations. Specific changes include:
- Increased coverage from 42 states to 50 states, with total building coverage increasing from 43M to 60M.
- Switched from NREL data to Solar Anywhere 10-km gridded weather data for most of the data coverage. NREL data still used where SolarAnywhere data is not available.
- Addressed several minor bugs in the energy production calculations.
- Switched carbon impact calculations from a national emissions factor to region-specific emissions factors.
- Included a list of locally-relevant solar incentives in the tool.
November 3, 2016
Project Sunroof released the data explorer with coverage in 42 states and Washington DC.
