This page is updated with each product release. 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](https://console.cloud.google.com/release-notes). To subscribe to these release notes, add the [feed URL](https://developers.google.com/static/feeds/solar-api-release-notes.xml) of this page to your [RSS feed reader](https://wikipedia.org/wiki/Comparison_of_feed_aggregators). [![Subscribe](https://developers.google.com/static/maps/documentation/images/rss-icon.svg)](https://developers.google.com/static/feeds/solar-api-release-notes.xml) See the [Getting Started](https://developers.google.com/maps/documentation/solar/release-notes/cloud-setup) documentation for information on how to get started using the Solar API. ## October 28, 2026 Feature **Detected arrays polygons** `buildingInsights` responses with detected arrays data now include the boundaries of each detected solar array. When `detectionStatus` is `DETECTION_STATUS_ARRAYS_DETECTED`, the `detectedArrays.arrays` field lists each detected array with its GeoJSON polygon of the array (`polygonGeojson`). For more information, see [Request detected arrays data](https://developers.google.com/maps/documentation/solar/building-insights.md.txt#request_detected_arrays_data). ## May 11, 2026 Announcement **Detected arrays data generally available** The Solar API detects existing rooftop solar installations based on satellite imagery. To request detected arrays data, set the `additionalInsights` parameter to `DETECTED_ARRAYS` in your `buildingInsights` request body. For more information, see [Request detected arrays data](https://developers.google.com/maps/documentation/solar/building-insights.md.txt#request_detected_arrays_data). ## May 08, 2026 Announcement **High-Quality Global Expansion and Data Refresh** The Solar API is releasing an expansion in Europe and global refresh of `HIGH` ImageryQuality data. - High-quality data coverage (requests made with `requiredQuality=HIGH` and corresponding responses with `imagery_quality: 'HIGH'`) has been expanded to cover new areas in the following regions: Albania, Estonia, Latvia, Lithuania, Slovakia, Slovenia. - High-quality data refresh and expansion of imagery and buildings data in the following regions: Austria, Belgium, Bulgaria, Canada, Croatia, Czechia, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Italy, Japan, Luxembourg, Macau, Malta, Mexico, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Serbia, Spain, Sweden, Switzerland, United Kingdom, United States, and Vatican City. For more coverage details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## April 15, 2026 Announcement **BASE quality data generally available in limited regions in India and Pakistan** `BASE`-quality data coverage (defined as API requests made with `requiredQuality=BASE` where corresponding responses with `imagery_quality: BASE`) is available for residential building areas in the following regions: India and Pakistan. Solar API calls requesting `BASE` quality data for locations in these regions are billed at the standard rate. For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## March 25, 2026 Announcement **BASE quality data generally available in limited APAC regions** `BASE`-quality data coverage (defined as API requests made with `requiredQuality=BASE` where corresponding responses with `imagery_quality: BASE`) is available for residential building areas in the following regions: Indonesia, Thailand, Philippines, Malaysia, Singapore, and Taiwan. Solar API calls requesting `BASE` quality data for locations in these regions are billed at the standard rate. For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## September 23, 2025 Announcement **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 Netherlands. For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). Announcement **BASE quality data generally available in limited LATAM regions** `BASE`-quality data coverage (defined as API requests made with `requiredQuality=BASE` where corresponding responses with `imagery_quality: BASE`) is available for residential building areas in the following regions: Argentina, Chile, and Mexico. Solar API calls requesting `BASE` quality data for locations in these regions are billed at the standard rate. `BASE` quality data is experimental elsewhere. For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## September 04, 2025 Announcement **BASE quality data generally available in limited LATAM regions** A new `BASE` ImageryQuality tier is now available for usage in GA. `BASE` ImageryQuality describes solar data that is derived from enhanced satellite imagery processed at 0.25 m/pixel. `BASE`-quality data coverage (defined as API requests made with `requiredQuality=BASE` where corresponding responses with `imagery_quality: BASE`) is available for residential building areas in the following regions: Brazil, Puerto Rico, Peru, Colombia. Solar API calls requesting `BASE` quality data for locations in these regions are billed at the standard rate. `BASE` quality data is experimental elsewhere. To learn more about requesting `BASE` quality data, see [Expanded Coverage (Experimental)](https://developers.google.com/maps/documentation/solar/expand-coverage). ## May 14, 2025 Announcement **2025 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. ## October 30, 2024 Announcement **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](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## April 29, 2024 Change **Panel Dimensions and Capacity Update** Panel dimensions and capacity have been updated to match industry standards. The following changes are: - Panel height (meters): 1.65 → 1.879 - Panel width (meters): 0.992 → 1.045 - Panel capacity (watts): 250 → 400 We recommend that you continue to get these values from the `panelCapacityWatts`, `panelHeightMeters`, and `panelWidthMeters` fields of the [buildingInsights.findClosest](https://developers.google.com/maps/documentation/solar/reference/rest/v1/buildingInsights/findClosest.md.txt) response. Announcement **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](https://developers.google.com/maps/documentation/solar/reference/rest/v1/buildingInsights/findClosest.md.txt) response. The utility electricity rates are not surfaced in the API but are used in calculations for the following fields of the [buildingInsights.findClosest](https://developers.google.com/maps/documentation/solar/reference/rest/v1/buildingInsights/findClosest.md.txt) response: - `leasingSavings` - `cashPurchaseSavings` - `financedPurchaseSavings` - `costOfElectricityWithoutSolar` - `remainingLifetimeUtilityBill` - `solarPercentage` - `percentageExportedToGrid` Announcement **Exact Quality Parameter** Users can now specify the exact quality of data layers they would like returned. [dataLayers.get](https://developers.google.com/maps/documentation/solar/reference/rest/v1/dataLayers/get.md.txt) 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. ## March 21, 2024 Announcement **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](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## January 16, 2024 Announcement **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 countries: Australia, Belgium, Czechia, Denmark, Greece, Finland, Ireland, Norway, Portugal, Sweden, New Zealand. For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## December 13, 2023 Announcement **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 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](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## November 13, 2023 Announcement **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: - United States: AR, AZ, CT, DC, GA, ID, IN, KY, LA, MD, MI, MS, NC, NH, NJ, NY, NV, OH, OK, PA, SC, TN, VA, WV - Canada - Poland - Austria - Switzerland For more details, see the [Solar API coverage map](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## October 24, 2023 Announcement **Expanded 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](https://developers.google.com/maps/documentation/solar/coverage.md.txt). ## August 08, 2023 Announcement **Solar API** Announcing the General Availability (GA) release of the Solar API. See the [Release Notes](https://developers.google.com/maps/documentation/solar/release-notes.md.txt) for information about this release and for all other releases. If you are a new user, see [Set Up in the Google Cloud Console](https://developers.google.com/maps/documentation/solar/cloud-setup) to start the installation process. ## 2023-06-29 In 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](https://developers.google.com/maps/documentation/solar/release-notes/requests#make_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](https://developers.google.com/maps/documentation/solar/release-notes/requests#make_a_data_layers_request). ## 2023-05-09 > [!WARNING] > **Preview:** Launched a **Restricted Preview** of the Solar API as part of Google Maps Platform on Google Cloud. - Launched a restricted preview of the **new Solar API** , hosted as part of Google Maps Platform on Google Cloud. This new API will replace the now-deprecated EarthEngineSolar API, and, to minimize disruption, we encourage you to migrate as soon as feasible. - Revamped [project-level access](https://developers.google.com/maps/documentation/solar/quickstart) - To get access, please reach out to your contact on the Solar API team. - Access is manually granted on a per-project basis, and is independent from access to the EarthEngineSolar API. - Added new [documentation](https://developers.google.com/maps/documentation/solar) - Set new [terms of service](https://developers.google.com/maps/documentation/solar/terms) - Integrated with [Cloud Monitoring](https://cloud.google.com/monitoring) and [Cloud Billing](https://cloud.google.com/billing) - Calls to Solar API endpoints will begin appearing on projects' Billing Dashboard (with a **100% discount** during the Preview). - Renamed [endpoints and methods](https://developers.google.com/maps/documentation/solar/reference.md.txt) - `earthenginesolar.googleapis.com` -\> `solar.googleapis.com` - `solarInfo:get` -\> `dataLayers:get` - `buildings:findClosest` -\> `buildingInsights:findClosest` - Configured new [quota limits](https://developers.google.com/maps/documentation/solar/limits) - Replaced per-day and per-quarter request quotas with per-minute quotas. - Quota limits are set at the project level and begin at 60 queries per minute for each endpoint. - Find a project's quota at - Deprecated the existing EarthEngineSolar API. - The deprecated EarthEngineSolar API will continue to work while the new Solar API is in Preview. - Expanded medium-quality (`imagery_quality: 'MEDIUM'`) data coverage - Expanded medium-quality data availability for Germany, the UK, France, Spain, Italy, and Florida. - Expanded medium-quality financial data availability (via `BuildingInsights`) for a significantly larger portion of Florida. ## 2022-02-28 - Added different quality levels of data. - Added quality level to returned data. - Added ability to specify the required quality level. ## 2020-09-08 - Added dataset specifier for early access to non-production data. - Added specification of panel parameters (width, height, name, place, capacity, lifetime). - Added height of roof segments. - Added information about building ground footprints. - Added information about unsegmented roof size. - Added panel-by-panel production values. ## 2019-06-21 - Added bounding boxes to building and roof segment structures. - Added segment index to roof segment summaries, to unambiguously link each summary to more detailed information. - Added documentation for new raster endpoint which will allow access to imagery and detailed solar potential information. ## 2018-07-20 Initial release.