SOLARWATT is a German solar company based in Dresden. Its Manager (the wall-mounted Manager flex and the DIN-rail version) coordinates solar modules, home batteries such as MyReserve and Battery flex, heat pumps, wallboxes and smart plugs, and its data feeds the SOLARWATT Home app and the SOLARWATT Manager portal.
SOLARWATT is an energy system more than a smart home product. The Manager connects to inverters, batteries, wallboxes and heating over Ethernet, S0 inputs and similar links, and reports to SOLARWATT's own cloud portal. SOLARWATT's pages we read describe no public API, voice assistant link or Matter support for the Manager.
Outside access exists, but mostly through unofficial routes. SOLARWATT now has an official Homey app that talks Modbus TCP to its newer Vision inverter, battery and charger. Home Assistant and openHAB users read the Manager's local REST interface, which forum users report firmware updates have broken more than once. That suits people who like to tinker; it is weaker for anyone who wants a supported, stable link to a smart home platform.
Connection
Ethernet to the Manager, plus SOLARWATT's cloud portal
Voice assistants
Not found
Matter
Not found
Open platforms
Official Homey app; community Home Assistant and openHAB
What can be connected
Solar and storage Inverters from Fronius, SMA, KACO, Kostal, Steca, Huawei and SolarEdge, and SOLARWATT or VARTA home batteries
EV charging and heat Keba, Webasto and Alfen wallboxes; heat pumps through SG Ready; Stiebel Eltron heat pumps, EGO Smart Heater and my-PV heating elements
Metering and plugs S0 meters, the SOLARWATT AC-Sensor, and Shelly devices; the datasheet also lists myStrom Wi-Fi switches
The current app. It shows PV production, battery charging, grid feed-in and consumption, household use and wallbox status in a live view and in day, week, month and year charts. Login uses Manager portal credentials. Version 3.0 added a heating section for heat pumps, heating rods and hot water heat pumps, and a savings calculator. Published by SOLARWATT GmbH. The Google Play listing shows 10K+ downloads and a 2.7 star rating.
The web portal that the Manager reports to. SOLARWATT's overview says both the SOLARWATT Home app and the portal use data from the Manager, and the manual says devices are managed through a local website and the portal. We did not open the portal itself.
An older companion app for MyReserve 20 and 25 home batteries. The App Store listing shows live generation, state of charge and charge power, a Bluetooth link to the storage unit, and an installer function. The last listed update is version 1.21 from 28 October 2020. We could not find an Android listing.
Official supported by the brandCommunity built by someone elseNot found searched, nothing foundUnconfirmed sources conflict or could not be opened
Platform
Status
What it means
Sources
Connection
Ethernet and powerline
Yes
The Manager flex 1.0 has one 10/100 Mbit RJ-45 port and a powerline (AV Home Green PHY) interface; the flex 1.5 and the DIN-rail model have RJ-45. Wallboxes, the AC-Sensor and Shelly devices reach the Manager over the LAN.
SOLARWATT's datasheet does not list WLAN as a Manager interface; Wi-Fi devices such as myStrom switches talk to it through the router. The SOLARWATT Home app does mention Wi-Fi setup for the Charger Vision.
The SOLARWATT Manager overview and the SOLARWATT Home listings do not mention voice assistants, and we found no SOLARWATT Alexa skill. We could not confirm either way.
We found no SmartThings integration, but did not search SmartThings' own catalog, so this is unconfirmed.
Searched, no source
Smart appliances
Not mentioned
SOLARWATT describes integrating smart household appliances, in practice through Shelly devices and myStrom Wi-Fi switches for metering and switching, rather than linking to a smart home ecosystem.
SOLARWATT has an official Homey app published by RM de Gruijter, listed as an official developer, with Athom approving a stable release in October 2026. It supports Homey Pro, Homey Cloud, Homey Pro mini and Self-Hosted Server, and talks to the Vision inverter, battery, grid meter and Charger Vision over local Modbus TCP with no cloud account. The store page marks each device type as needing a Homey Bridge, which we could not reconcile with a LAN-only connection. If a SOLARWATT Manager is installed it can take back control of the battery.
We found no built-in Home Assistant integration. A community integration for the Manager flex and rail, shared on the simon42 forum and apparently installed through HACS, reads the Manager's local REST interface with the password printed on the device. Users report that local login failed after SOLARWATT software updates. A Home Assistant forum thread shows a second approach using REST sensors. SOLARWATT does not maintain either.
openHAB lists a SOLARWATT binding that connects locally to the Energymanager by IP address and discovers devices including inverters, MyReserve batteries, power meters and wallboxes. The page says the wall-mounted Manager and Manager flex are not supported and suggests the Remote openHAB binding instead. SOLARWATT does not maintain the binding.
No link found between SOLARWATT and Philips Hue on the pages we read.
Searched, no source
Modbus TCP (Vision devices)
Unconfirmed
SOLARWATT's Homey app relies on Modbus TCP on the Vision inverter, battery and charger, and says the installer must enable it. Forum users say the Vision devices are relabelled FoxESS hardware and that SOLARWATT does not publish the Modbus interface, though FoxESS does. We found no SOLARWATT Modbus documentation, and the Manager datasheet names no Modbus interface.
The REST interface on the Manager flex is unofficial. Forum posts describe a session cookie, endpoints such as /rest/items that were replaced after a firmware update, and repeated breakage after updates. The datasheet describes no public API, only the supported device list.
Checked 11 November 2026 against the brand's own pages, app store listings and each project's own page. “Not found” means we searched and found nothing, not that it is impossible. Compatibility changes often. Spot an error? Tell us and we will fix it.
Common questions about SOLARWATT
Does SOLARWATT support Matter?
Unconfirmed. Not mentioned on any SOLARWATT page we read. We could not confirm any Matter plan or product.
Does SOLARWATT work with Alexa?
Unconfirmed. The SOLARWATT Manager overview and the SOLARWATT Home listings do not mention voice assistants, and we found no SOLARWATT Alexa skill. We could not confirm either way.
Does SOLARWATT work with Google Home?
Unconfirmed. No Google Home or Google Assistant mention on the SOLARWATT pages we read. We could not confirm.
Does SOLARWATT work with Apple Home (HomeKit)?
Unconfirmed. No Apple Home or HomeKit mention on the SOLARWATT pages we read. We could not confirm.
Does SOLARWATT work with Home Assistant?
Yes, through a community-built integration. We found no built-in Home Assistant integration. A community integration for the Manager flex and rail, shared on the simon42 forum and apparently installed through HACS, reads the Manager's local REST interface with the password printed on the device. Users report that local login failed after SOLARWATT software updates. A Home Assistant forum thread shows a second approach using REST sensors. SOLARWATT does not maintain either.
Does SOLARWATT work with SmartThings?
Unconfirmed. We found no SmartThings integration, but did not search SmartThings' own catalog, so this is unconfirmed.
Does SOLARWATT work with Homey?
Yes, officially. SOLARWATT has an official Homey app published by RM de Gruijter, listed as an official developer, with Athom approving a stable release in October 2026. It supports Homey Pro, Homey Cloud, Homey Pro mini and Self-Hosted Server, and talks to the Vision inverter, battery, grid meter and Charger Vision over local Modbus TCP with no cloud account. The store page marks each device type as needing a Homey Bridge, which we could not reconcile with a LAN-only connection. If a SOLARWATT Manager is installed it can take back control of the battery.
Does SOLARWATT work with Hubitat?
Unconfirmed. We found no Hubitat driver for SOLARWATT in our searches, but did not check Hubitat's own listings.
Answers come from the sourced table above. See how SOLARWATT compares with all brands on the smart home brand statistics page.