Fox ESS is a Chinese energy storage company headquartered in Wenzhou, making PV and hybrid inverters, home and commercial batteries, microinverters, EV chargers and heat pumps. Systems are monitored and managed through the FoxCloud app and web portal, and many models can also be read locally over Modbus.
Fox ESS systems report to the FoxCloud service, usually over Wi-Fi for home systems, with Ethernet or 4G mentioned for commercial ones. Beyond the app, the integrations we found fall into two routes: the cloud, using a personal API key, or a local Modbus connection. We found no Matter, Alexa, Google Home or Apple Home support.
That suits energy-minded users who run Home Assistant, evcc, Homey or similar and want to read or steer the inverter and battery. It is weaker for voice assistants and mainstream smart home hubs, and the Modbus integrations are community projects whose model support varies.
Connection
Wi-Fi to FoxCloud; Modbus locally
Voice assistants
None found
Matter
Not found
Open platforms
Cloud API key, Modbus, Home Assistant and Homey
What can be connected
Inverters PV inverters, hybrid inverters in single-phase, split-phase and three-phase, and All in One units
Batteries and storage EQ, CQ and EP lithium batteries and commercial storage
The current monitoring app for Fox ESS systems. The App Store listing describes remote checks of generation, revenue and equipment status, and its version history mentions an AI assistant, work mode display, plant health check, VPP control, EV charger and heat pump support, Bluetooth-assisted network setup and an Open Platform entry in the user centre. Fox ESS's manual describes work modes, a mode scheduler, quick settings and installer and agent accounts. Published by Foxess Co., Ltd. The manual and Fox ESS's launch page say it is on Google Play, but we could not find the Play listing itself.
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
Wi-Fi
Yes
Fox ESS's FoxCloud 2.0 app manual covers connecting devices through a WLAN configuration and says a 5 GHz network must be switched to 2.4 GHz or setup may fail.
A Fox ESS press release says its commercial and industrial systems send data to FoxCloud 2.0 over Ethernet or 4G. We did not confirm this for home systems.
Fox ESS's press release says its A Lite EV chargers have open Modbus integration. For inverters, the evidence is third-party: evcc documents Modbus RTU over a USB-RS485 adapter, RTU over TCP and Modbus TCP for the H3-Pro/Smart, and the Homey app says Modbus TCP must be enabled on the devices and they need fixed IP addresses. We did not find a Fox ESS page that documents the inverter register map.
evcc documents a FoxESS H3-Pro/Smart template with grid, PV and battery roles and battery control. A forum post also says Predbat can run through Fox Cloud or a direct connection.
We did not open Home Assistant's own integrations page, so we could not confirm whether a built-in integration exists. Community integrations are common. foxess_modbus connects directly to the inverter without the cloud, covers H1, H3, H3 Pro, P1 and KH families among others, installs through HACS and states it is not endorsed by Fox ESS. foxess-ha uses the cloud API with a personal key, polling real-time data about every 5 minutes with a limit of 1,440 calls per day per inverter. A separate gateway project reads the M1-800-E microinverter locally over MQTT.
The Homey store lists a Fox ESS app v2.0.0 carrying an Official label and published by an individual developer, RM de Gruijter; the Homey forum says Athom approved it, and neither page says Fox ESS made it. It covers inverter, battery, meter, car charger and a read-only heat pump (beta). The cloud route uses a FoxCloud API key and updates every five minutes. The Modbus TCP route is local and updates every few seconds. It lists Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server and needs Homey 12.13.0 or later, but also says Homey Bridge is required for every listed device, which we could not reconcile.
openHAB's add-on list includes a Modbus FoxInverter binding. It is narrow: tested on the Solakon ONE, which is the FoxESS MQ-2200 (sold as Avocado 22 Pro), over a Modbus TCP bridge, with read-only channels. It is not maintained by Fox ESS. We found no binding for the main inverter families.
Fox ESS runs a developer portal, called FoxCloud OpenPlatform on the Homey forum and the FoxESS Developer Portal in the foxess-ha repository, where users create a personal API key. foxess-ha reports a limit of 1,440 calls per day per inverter. We did not open the portal itself, and Fox ESS's own manual does not describe an API.
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 Fox ESS
Does Fox ESS support Matter?
Not that we could find. No Fox ESS announcement or product found when we searched, and none of its pages we read mention it.
Does Fox ESS work with Alexa?
Not that we could find. No Fox ESS page we read mentions Alexa. We searched for it together with other platforms and found nothing relevant.
Does Fox ESS work with Google Home?
Not that we could find. No Fox ESS page we read mentions Google Home or Google Assistant. We searched for it together with other platforms and found nothing relevant.
Does Fox ESS work with Apple Home (HomeKit)?
Not that we could find. Not mentioned on any Fox ESS page we read.
Does Fox ESS work with Home Assistant?
Yes, through a community-built integration. We did not open Home Assistant's own integrations page, so we could not confirm whether a built-in integration exists. Community integrations are common. foxess_modbus connects directly to the inverter without the cloud, covers H1, H3, H3 Pro, P1 and KH families among others, installs through HACS and states it is not endorsed by Fox ESS. foxess-ha uses the cloud API with a personal key, polling real-time data about every 5 minutes with a limit of 1,440 calls per day per inverter. A separate gateway project reads the M1-800-E microinverter locally over MQTT.
Does Fox ESS work with SmartThings?
Not that we could find. No integration found when we searched.
Does Fox ESS work with Homey?
Yes, through a community-built integration. The Homey store lists a Fox ESS app v2.0.0 carrying an Official label and published by an individual developer, RM de Gruijter; the Homey forum says Athom approved it, and neither page says Fox ESS made it. It covers inverter, battery, meter, car charger and a read-only heat pump (beta). The cloud route uses a FoxCloud API key and updates every five minutes. The Modbus TCP route is local and updates every few seconds. It lists Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server and needs Homey 12.13.0 or later, but also says Homey Bridge is required for every listed device, which we could not reconcile.
Does Fox ESS work with Hubitat?
Not that we could find. No driver found when we searched.
Answers come from the sourced table above. See how Fox ESS compares with all brands on the smart home brand statistics page.