SMA
SMA Sunny Home Manager 2.0 (SHM20)
Energy · And More
Partly worksLocal
1 report: 1 says it partly works.
Reported with 1 integration: SMA Devices Plus.
What people report
| Integration | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| SMA Devices Plus | Partly works Local | Speedwire values wrong at night when drawing power; correct during feed-inSaved copyUsed Version of Home Assistant: 2025.8.2 Used Version of ha-pysmaplus: 0.4.10 I use SHM20 via Speedwire. It is night, so just draw power. The values are wrong and don't match up. The values match on day time, when power is feed into to grid. The values from the plant via EnnexOS also does not match up for the usage. Used Interface/Access Method see https://raw.githubusercontent.com/littleyoda/ha-pysmaplus/main/docs/images/interfaces.png Speedwire: [ x ] Webconnect: [ ] EnnexOS-based: [ x ] Energymeter/SHM2: [ x ] SHM2 with Grid Guard Code: [ ] List of the integrated SMA devices Inverter: STPX … Excerpt saved from GitHub on 2026-10-23. | Issue #76 · 2025-09 |
Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.
In ReReHome
Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.
Identifiers
| Brand | SMA |
|---|---|
| Model | SHM20 |
| Category | Energy |