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This page is updated with each new release of the Solar API. The changelog lists releases by date and includes any new features, bug fixes and significant performance improvements. You can also browse and filter all release notes for all products in the Google API Console.See the Getting Started documentation for information on how to get started using the Solar API.
May 14, 20252025 Solar API Data Refresh
The Solar API is releasing a worldwide refresh of its data and models with improvements to support more buildings with fresher and higher quality insights:
Better quality DSMs, roof segments, and building footprints. Using a new model in collaboration with Google DeepMind, we have increased the precision of building and obstacle heights, which straightens ridgelines, smooths planar segments, and reduces artifacts. We have also significantly improved roof segmentation and building footprint detection. These changes support better solar panel alignments and the design of solar arrays on roofs for the wide area coverage available in "Medium" resolution imagery.
Higher building coverage with fresher building data. We have refreshed our source basemap to use the latest Google Maps building data. The new building data adds support for tens of millions of additional buildings, significantly increasing Solar API geographic coverage, especially in areas outside of the US. This ensures that the Solar API has up-to-date information on buildings around the world, and removes many non-building structures that could interfere with API calls for nearby buildings.
Improved energy modeling. We are now applying a newer, more accurate model to determine energy usage for buildings, including hourly panel performance and building energy demand across the US. This expands on functionality initially released in 2024 for California to support NEM 3.0 net metering models.
Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') has been expanded to cover new areas in Japan, Philippines, and Mexico.
For more details, see the Solar API coverage map.
April 29, 2024Exact Quality Parameter
Users can now specify the exact quality of data layers they would like returned. dataLayers.get has a new parameter called exactQualityRequired. When it is set to true, the quality indicated by the requiredQuality field will be returned if available. Otherwise, exactQualityRequired is set to false by default. In this case, the endpoints will behave normally and return the highest quality available data.
Utility Incentives and Utility Electricity Rates Update
United States utility incentive data and utility electricity rates have been updated using data from Clean Power Research. You can access the new utility incentive amounts for each building in the UtilityIncentive field of the buildingInsights.findClosest response. The utility electricity rates are not surfaced in the API but are used in calculations for the following fields of the buildingInsights.findClosest response:
leasingSavings
cashPurchaseSavings
financedPurchaseSavings
costOfElectricityWithoutSolar
remainingLifetimeUtilityBill
solarPercentage
percentageExportedToGrid
Panel Dimensions and Capacity Update
Panel dimensions and capacity have been updated to match industry standards. The following changes are:
We recommend that you continue to get these values from the panelCapacityWatts, panelHeightMeters, and panelWidthMeters fields of the buildingInsights.findClosest response.
Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') has been expanded to cover new areas in the following regions: Hawaii, Germany, France, Spain, Italy, Puerto Rico, The Bahamas, Antigua and Barbados.
For more details, see the Solar API coverage map.
January 16, 2024Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') has been expanded to cover new areas in the following countries: Australia, Belgium, Czechia, Denmark, Greece, Finland, Ireland, Norway, Portugal, Sweden, New Zealand.
For more details, see the Solar API coverage map.
December 13, 2023Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') has been expanded to cover new areas in the following 21 states in the US: AK, AL, CO, DE, IA, KS, ME, MN, MO, MT, ND, NE, NM, OR, RI, SD, UT, VT, WI, WA, and WY.
For more details, see the Solar API coverage map.
November 13, 2023Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') has been expanded to cover new areas in the following regions:
For more details, see the Solar API coverage map.
October 24, 2023Expanded Solar API coverage
Medium-quality data coverage (requests made with requiredQuality=MEDIUM and corresponding responses with imagery_quality: 'MEDIUM') now includes most of California, Texas, Massachusetts, and Illinois. For more information, see the Solar API coverage map.
Solar API
Announcing the General Availability (GA) release of the Solar API. See the Release Notes for information about this release and for all other releases.
If you are a new user, see Set Up in the Google Cloud Console to start the installation process.
2023-06-29In July of 2023, Google will release a change to the format of URLs returned in the response to a call to a Data Layers request. To prepare for this release, write your apps to support both URL formats. By preparing for the new URL format now, your apps will not be affected by this update.
For more information, see Data Layers request.
2023-05-09 Preview: Launched a Restricted Preview of the Solar API as part of Google Maps Platform on Google Cloud.earthenginesolar.googleapis.com -> solar.googleapis.comsolarInfo:get -> dataLayers:getbuildings:findClosest -> buildingInsights:findClosestimagery_quality: 'MEDIUM') data coverage
BuildingInsights) for a significantly larger portion of Florida.Initial release.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["The Solar API is generally available and provides data for solar potential, including building insights and data layers."],["The API offers various quality levels for data requests and responses, with expanded coverage in many regions globally."],["Updates include new parameters for specifying data quality, utility incentives, and panel dimensions, and are detailed in the release notes."],["Users can find setup instructions, documentation, and coverage maps on the Google Developers site."],["The EarthEngineSolar API has been deprecated in favor of the new Solar API, hosted on Google Maps Platform on Google Cloud."]]],["The Solar API expanded medium-quality data coverage to new regions including Japan, the Philippines, Mexico, Hawaii, multiple European countries, and numerous US states. Users can specify exact data quality with the `exactQualityRequired` parameter. United States utility incentive data and electricity rates were updated, affecting financial calculations. Panel dimensions and capacity were updated to reflect industry standards. The API transitioned from a restricted preview to general availability and deprecated the EarthEngineSolar API. URL formats will change in July 2023.\n"]]
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