Compatibility of the Homey Energy Dongle

The Homey Energy Dongle is designed for digital smart meters with a P1 port — a standard energy-data interface used in many European countries. It works with Homey Pro, Homey Pro mini, Homey Self-Hosted Server, and Homey Cloud. Analog meters are not supported.

Regions with common P1 port support

P1 ports are typically found on smart meters in the following countries. While not every meter includes one, most modern models in these regions do.

Identifying the P1 port

The P1 port is typically labeled “P1” and uses a smaller RJ12 connector, making it easy to identify. If your meter mentions “DSMR” or “ESMR,” it is supported, though this label isn’t always visible.

Important compatibility notes
Some smart meters use RJ12 connectors for other protocols. If your port is labeled “RS485,” “Modbus,” or “M-Bus,” it is not supported. Also, despite the similar appearance, the Homey Energy Dongle is not compatible with HAN ports that use a larger RJ45 connector.

Verified smart meters

The table below lists smart meters tested with the Homey Energy Dongle.

We’re dedicated to supporting all P1 smart meters with an RJ12 connector, so you can confidently order the Homey Energy Dongle knowing it’s compatible with your meter.

If your meter isn’t listed, you can still order with peace of mind. In the unlikely event it isn’t compatible, we’ll work to add support within two weeks or else provide you with a full refund.

Contribute to our list of verified meters!
If your smart meter isn’t on the list and works great with the Homey Energy Dongle, please reach out to support. We’d love to add it to our list of verified meters.

P1 port activation

Some smart meters in Belgium, Denmark, Sweden, and Switzerland have a P1 port that your energy provider needs to activate remotely. Without activation, your Homey Energy Dongle won’t receive any data. You can usually request this through your provider’s portal or by email.

Encryption

Some energy providers in Austria, Luxembourg, and Sweden encrypt your smart meter data. Homey needs a decryption key to access this data during the Homey Energy Dongle’s setup. You can request this key from your energy provider. The process varies, but usually involves emailing them your address and smart meter serial number.

Decryption key
Ensure you have the decryption key to use the Homey Energy Dongle with your smart meter.

RJ45 HAN port

The Homey Energy Dongle works with smart meters that have a P1 port that uses an RJ12 connector. It won’t be compatible if your meter features a HAN port with an RJ45 connector.

HAN-P1
Sweden uses RJ12 ports that are labelled HAN or HAN-P1. These meters are compatible with the Homey Energy Dongle.

Landis+Gyr E350

Some Landis+Gyr E350 models transmit a weaker signal, which prevents the Homey Energy Dongle from reading the data correctly. If that’s the case, an Active P1 Splitter is required.

Kamstrup HAN-P1 module

Some Kamstrup meters without built-in P1 capabilities use a separate HAN-P1 module. This module comes in three variants: one is fully compatible with the Homey Energy Dongle, one is partially compatible, and one isn’t compatible.

These modules aren’t sold directly to consumers. You’ll have to contact your grid operator or energy provider if you need one. They can inform you which version you have and whether a compatible module is available.

Kamstrup HAN-P1 module

This module has two versions: one self-powered (fully compatible with the Homey Energy Dongle) and one that requires an Active P1 Splitter. The module’s documentation will tell you which splitter is needed.

Kamstrup HAN-NVE module

This variant doesn’t use the P1 standard, so it’s incompatible with the Homey Energy Dongle.

Recognizing HAN-P1 and HAN-NVE modules
The HAN-P1 and HAN-NVE modules are recognized by the size of their connectors. The HAN-NVE module uses an RJ45 connector, which is slightly larger than the RJ12 connector that the Homey Energy Dongle uses.