Dear community,
I share this project about a solar excess power router/diverter to a variable water heater dimmer (like a Shelly Dimmer) with native integration with EMHASS.
After developing EMHASS this was a normal next step to follow and completely optimize excess solar energy usage.
Please read the 
Important Warnings & Disclaimer section on github.
Main features:
- Pure Python script, installable using HACS
- Real-time PID Control: Rapidly adjusts the dimmer to keep grid export at exactly 0W.
- EMHASS “Optim” Mode Integration: Can follow EMHASS schedules for nighttime heating while still utilizing the PID for daytime solar spikes.
- Safety First: Monitors grid voltage to shut down during brownouts.
More information on hardware requirements, installation and configuration in the main repository here: https://github.com/davidusb-geek/emhass-solar-diverter
Cheers! 