Compatibility & requirements¶
- Home Assistant 2024.10 or newer
- A 1KOMMA5° account with at least one active system
- The
onekommafivePython library (installed automatically)
Supported markets¶
1KOMMA5° operates in seven markets. The integration ships translations and per-locale currency for all of them, auto-detected from the site's country code:
| Locale | Translations | Currency |
|---|---|---|
| Germany, Austria | German | EUR |
| Netherlands | Dutch | EUR |
| Finland | Finnish | EUR |
| Spain | Spanish | EUR |
| Denmark | Danish | DKK |
| Sweden | Swedish | SEK |
| Australia | English | AUD |
Cost, revenue and price sensors render in the local currency without manual configuration.
Caveat
End-to-end functional verification exists only for Germany (the developer's own setup). The SDK targets a single global API endpoint, so the integration should work in other markets, but auth flows, data shapes and feature availability may vary regionally. If something does not work in a non-DE market, please open a GitHub issue with the diagnostics dump.
Technical details¶
| Property | Value |
|---|---|
| API library | mrebbert/1komma5-api (docs) |
| Authentication | OAuth2 PKCE against auth.1komma5grad.com (the current Auth0 flow, matches the official iOS app). Accounts that still sign in only via my.1komma5.io are not supported; the EMP backend behind the account (GridX or 1KOMMA5°-native) is independent and both work. |
| IoT class | cloud_polling |
| Coordinators | 8 (live 30 s, price 1 h, optimization 15 min, weather 1 h, system_status 5 min, energy 15 min, notifications 5 min, heartbeat_prices 1 h) |
| HA domain | onekommafive |
Disclaimer¶
This project is not affiliated with or endorsed by 1KOMMA5°. The API is undocumented and may change without notice.
This is an unofficial integration based on a reverse-engineered API, built 100 % vibe-coded with AI assistance. It may break if 1KOMMA5° changes their backend. Use at your own risk.
The developer does not have the means to test broadly across hardware configurations — a lot of it is "it works for me". Personal test setup:
| Component | Model |
|---|---|
| Hybrid Inverter | Sungrow SH6.0RT-V112 |
| Battery | Sungrow SBR256 |
| Wallbox | go-e homeFix 11 kW |
| EV | Volkswagen ID.5 |
| Heat pump | Stiebel Eltron WPL-A 10 HK 400 Premium |