ONWATT: Home Assistant, evcc & supplier compatibility

ONWATT appears on energy-supplier compatibility pages but has no device template in evcc.

evcc

Not in evcc no template for ONWATT [evcc templates, 2026-10-19]

Devices

No individual models recorded. Unknown know this? tell us

Home Assistant

Unknown know this? tell us Home Assistant support for this brand has not been checked yet.

Energy supplier apps

Weekly: what changed in energy-device compatibility TODO: provider

One email a week: new supplier support, Home Assistant/evcc updates, firmware gotchas — and what the end of net metering on 1 January 2027 means for you. Placeholder form: no newsletter provider is connected yet and nothing is sent or stored.

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