Goedkope dynamische energie met een thuis accu door Home Assistant en Home Battery Control | HowTo

Published at : 18 Dec 2025

Sharing views on using home batteries with dynamic contracts.
Plus: how to use Home Battery Control accordingly.

00:00 - Intro
01:05 - How I calculate energy costs
08:21 - Applying to real world
11:26 - Using it in Home Assistant
14:07 - Strategies explained

Home Battery Control project: https://github.com/gitcodebob/marstek-venus-rs485-node-red
Based on release v 3.5.2

The files and configurations are provided as is. This is not a professional product, rather we share our progress as hobbyists to help other hobbyists.

Need help? Join our Discord at: https://discord.gg/RJXVusvEEf
Playlist: https://www.youtube.com/playlist?list=PL9wonDMnFmzvm-ln2iHdRE5niDD3ikrKn

Note for Dutch users. In 2026 the 'salderingsregeling' is still in effect. Jeroen.nl has a Q&A how this affects tax: https://jeroen.nl/dynamische-energie/stroom/salderen-en-terugleveren

Connecting Marstek's Modbus via ESPHome to Home Assistant
https://github.com/fonske/MarstekVenus-M5stackRS485/
https://github.com/fonske/MarstekVenus-LilygoRS485/blob/main/lilygo_mt1.yaml

Controlling via Home Assistant and Node-RED
https://github.com/gitcodebob/marstek-venus-rs485-node-red