ioBroker Kostal PIKO Adapter

Live monitoring, 15-minute history and long-term yield for Kostal PIKO inverters – directly via the built-in HTTP web server, no cloud required.
Values are exposed as ioBroker states, optional InfluxDB sync for Grafana, and a built-in engineer dashboard in the browser.

German documentation: docs/README.de.md · Installation: INSTALLATION.md

http://IOBROKER-IP:8092/     ← kostalpiko.0
http://IOBROKER-IP:8093/     ← kostalpiko.1 (additional instances +1 port)

Dashboard overview

| Tab | Content | |---|---| | Data | Live AC/DC, phases, efficiency, string values, Vmpp temperature, weather | | History | KPIs, Chart.js curves, 15-min table, string analysis, temperature chart | | Yield | Monthly table years × months, €/kWh, export/import, year comparison | | Nodes | All ioBroker states of the instance | | Logs | Adapter log (sync, PIKO fetch, errors) | | System | Connection, InfluxDB, manual sync |

Screenshots

See docs/screenshots/ – update guide in docs/screenshots/README.md.

Features

| Area | Function | |---|---| | Live data | AC/DC, phases, energy, status, efficiency | | History | LogDaten.dat, Chart.js, cache, catch-up fetch | | Yield | Years × months, manual + auto, €, kWh/kWp, CSV/JSON | | Weather | Open-Meteo: sunshine hours, cloud cover, temperature (postal code) | | Analysis | String analysis, Kostal datasheet limits | | InfluxDB | Live + history with historical timestamps | | Multi-instance | kostalpiko.0 + kostalpiko.1 in parallel | | Notifications | Daily/weekly/monthly HTML email reports |

Supported hardware

| Model | Strings | Status | |---|---|---| | PIKO 3.0 – 4.2 | 1–2 | Supported | | PIKO 5.5 | 3 | Tested | | PIKO 7.0 – 8.3 | 2 | Tested (8.3) | | PIKO 10.1 | 3 | Supported |

Firmware: ver 3.62 · Model selectable in settings or auto-detected.

Manufacturer: Kostal Solar Electric

Installation & update

iobroker url https://github.com/MPunktBPunkt/iobroker.kostalpiko
iobroker add kostalpiko          # first install only
iobroker update kostalpiko
iobroker restart kostalpiko

Releases: github.com/MPunktBPunkt/iobroker.kostalpiko/releases

Details: INSTALLATION.md · API overview: Schnittstellen.md

Configuration (summary)

| Setting | Default | Description | |---|---|---| | IP / port / auth | – | PIKO web server | | Poll interval | 30 s | Live polling | | Fetch history | off | LogDaten.dat | | Sync interval | 15 min | History + optional InfluxDB | | Web UI port | 8092 | +1 per instance | | Postal code | 87781 | Weather + regional comparison | | Feed-in tariff | 0.3925 €/kWh | Yield tab | | Module config | optional | String analysis, kWp |

InfluxDB (host, token, database) is configured in the InfluxDB adapter.

States (selection)

Live: ac.power, energy.today/total, pv.string1/2/3.*, dc.totalPower, efficiency.ratio, weather.*, status, online

History (15-min): history.dc1/2/3.*, history.ac.*, history.ac.totalPower, history.energy.total, history.efficiency.ratio

Full list: Web UI → Nodes tab or Schnittstellen.md

Object hierarchy: channels (ac, pv, weather, history, …) are created explicitly before states (ioBroker object schema).

Multiple inverters

| Instance | Web UI | Data | |---|---|---| | kostalpiko.0 | :8092 | own monthly-yields.json, history-cache.json | | kostalpiko.1 | :8093 | own files |

Combine yields from two inverters:

node /opt/iobroker/node_modules/iobroker.kostalpiko/scripts/combine-yields.js \
  /opt/iobroker/iobroker-data kostalpiko.0 kostalpiko.1 --from 2018-05 --csv yield.csv

Release history: GitHub Releases · Older changelogs

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License

GNU General Public License v3.0 – see LICENSE

Copyright (c) 2026 MPunktBPunkt