--- title: "Open-Meteo Solar Forecast" description: "Open-Meteo Solar Forecast is a Marketplace integration for Home Assistant. It has 3k installs sharing analytics, needs the vendor's cloud and was last updated September 15, 2026." canonical: "https://vulpo.app/integrations/marketplace/rany2-ha-open-meteo-solar-forecast" url: "https://vulpo.app/integrations/marketplace/rany2-ha-open-meteo-solar-forecast.md" last-updated: "2026-10-22" version: "1.4" --- # Open-Meteo Solar Forecast > Open-Meteo Solar Forecast is a Marketplace integration for Home Assistant. It has 3k installs sharing analytics, needs the vendor's cloud and was last updated September 15, 2026. Open-Meteo Solar Forecast estimates how much energy solar panels may produce in the coming days. It adds sensors for estimated production this hour, next hour, today, the remaining part of today, and each day up to a week ahead, plus the time of the highest power peak. Several PV arrays can be configured, each with its own location, tilt, azimuth, module power, solar tracker type and DC efficiency. Inverter capacity can be shared by all arrays or set per array, and morning and evening damping, snow cover depth and a horizon file for shading are also available. Forecast data comes from the Open-Meteo cloud service, and setup runs through the Home Assistant interface. An action moves an array's location to given coordinates or to the home location. Automatic summary of the README and code of rany2/ha-open-meteo-solar-forecast. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/contact) [Open in My Home Assistant](https://my.home-assistant.io/redirect/hacs_repository/?owner=rany2&repository=ha-open-meteo-solar-forecast&category=integration) On Home Assistant 2026.11 or newer? [Open it in the Marketplace](https://my.home-assistant.io/redirect/marketplace_repository/?owner=rany2&repository=ha-open-meteo-solar-forecast&category=integration) ## Supports - **Uses the vendor's cloud**: Needs an internet connection and an account with the vendor. - **From the Marketplace**: Installed through the Marketplace, formerly HACS. - **Actively maintained**: Its author released or pushed a change in the last six months. ## Setting it up Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services. ### Connect - **API key** - **API base URL** - **Name** - **Weather model** - **Inverter capacity**: The AC capacity of a single inverter shared by all arrays in Watt (0 = no limit). Ignored if any array has its own inverter capacity set on the array pages. - **Maximum snow cover depth**: If greater than 0, the snow cover depth which results in zero module power. ### Array - **Latitude** - **Longitude** - **Declination**: 0 = horizontal, 90 = vertical. - **Azimuth**: 0 = North, 90 = East, 180 = South, 270 = West. - **Modules peak power**: Total Watt peak power of the solar modules in this array. - **Array inverter capacity**: The AC capacity of this array's own inverter in Watt (0 = no dedicated inverter). If any array has its own inverter, each array is clamped individually and the shared inverter capacity is ignored. - **Solar tracker type** - **DC efficiency factor**: 0.0 = 100% loss, 1.0 = no loss. - **Morning damping factor**: 0.0 = no damping, 1.0 = full damping in the morning. - **Evening damping factor**: 0.0 = no damping, 1.0 = full damping in the evening. - **Use horizon file**: Use the horizon line defined in the horizon file (see docs) to respect shading of the modules. - **Partial shading**: Only if horizon is enabled: treat shadows as partial. - **Horizon file path**: Path to the horizon file (leave empty for the default path). - **Add another array** ### After setup - **API key** - **API base URL** - **Weather model** - **Inverter capacity**: The AC capacity of a single inverter shared by all arrays in Watt (0 = no limit). Ignored if any array has its own inverter capacity set on the array pages. - **Maximum snow cover depth**: If greater than 0, the snow cover depth which results in zero module power. - **Latitude** - **Longitude** - **Declination**: 0 = horizontal, 90 = vertical. - **Azimuth**: 0 = North, 90 = East, 180 = South, 270 = West. - **Modules peak power**: Total Watt peak power of the solar modules in this array. - **Array inverter capacity**: The AC capacity of this array's own inverter in Watt (0 = no dedicated inverter). If any array has its own inverter, each array is clamped individually and the shared inverter capacity is ignored. - **Solar tracker type** - **DC efficiency factor**: 0.0 = 100% loss, 1.0 = no loss. - **Morning damping factor**: 0.0 = no damping, 1.0 = full damping in the morning. - **Evening damping factor**: 0.0 = no damping, 1.0 = full damping in the evening. - **Use horizon file**: Use the horizon line defined in the horizon file (see docs) to respect shading of the modules. - **Partial shading**: Only if horizon is enabled: treat shadows as partial. - **Horizon file path**: Path to the horizon file (leave empty for the default path). - **Add another array** Texts from the code of [rany2/ha-open-meteo-solar-forecast](https://github.com/rany2/ha-open-meteo-solar-forecast). ## Entities - **Sensors**: Estimated energy production - this hour, Estimated energy production - next hour, Estimated energy production - today, Estimated energy production - remaining today, Estimated energy production - tomorrow, Estimated energy production - day after tomorrow, Estimated energy production - 3 days from now, Estimated energy production - 4 days from now, Estimated energy production - 5 days from now, Estimated energy production - 6 days from now, Estimated energy production - 7 days from now, Highest power peak time - today, and 7 more ## Actions - **Update Array Location**: Update the array location to match that of the provided coordinates, or to the configured HA home location if no coordinates are provided. Fields: Location Override ## Troubleshooting - **Diagnostics**: Downloads a diagnostics file to attach to a bug report. ## From the README > This custom component integrates the open-meteo-solar-forecast with Home Assistant. It allows you to see what your solar panels may produce in the future. From the README of [rany2/ha-open-meteo-solar-forecast](https://github.com/rany2/ha-open-meteo-solar-forecast#readme), [Apache License 2.0](https://spdx.org/licenses/Apache-2.0.html). Shortened. ## At a glance - Kind: Marketplace integration - Category: [Energy](https://vulpo.app/integrations/category/energy.md), Solar and batteries - Brand: [Open-Meteo](https://vulpo.app/integrations/open-meteo.md) - Number: 3k installs sharing analytics; 168 GitHub stars - Connection: Needs the vendor's cloud - Upkeep: Updated in the last 6 months - Needs: Needs the Marketplace (HACS on 2026.10 and older) - Latest version: 0.1.33, last updated September 15, 2026 - Domain: `open_meteo_solar_forecast` - Source: - Issues: In Vulpo: Chart card, Apple Watch ## Other ways in for Open-Meteo | Name | Kind | Installs or stars | Connection | Upkeep | | --- | --- | --- | --- | --- | | [Open-Meteo](https://vulpo.app/integrations/core/open-meteo.md) | Built-in integration | 18.9k installs sharing analytics | Needs the vendor's cloud | Part of Home Assistant | | [Open-Meteo Enhanced](https://vulpo.app/integrations/marketplace/sayurin-open-meteo-local.md) | Marketplace integration | 198 installs sharing analytics | Needs the vendor's cloud | Updated in the last 6 months | | [Open Meteo Marine](https://github.com/sh00t2kill/ha-open-meteo-marine) | Marketplace integration | 43 installs sharing analytics | Needs the vendor's cloud | Updated in the last 6 months | | [Open-Meteo Custom](https://github.com/iosmand/ha-open-meteo-custom) | Marketplace integration | 9 installs sharing analytics | Needs the vendor's cloud | Updated in the last 6 months | Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about) Last updated 2026-10-22. Source: https://vulpo.app/integrations/marketplace/rany2-ha-open-meteo-solar-forecast --- - HTML version of this page: https://vulpo.app/integrations/marketplace/rany2-ha-open-meteo-solar-forecast - Site index for agents: https://vulpo.app/llms.txt - Everything in one document: https://vulpo.app/llms-full.txt - All pages: https://vulpo.app/sitemap.xml