---
category:
  - "[[Journal]]"
type:
  - "[[Log]]"
topic:
  - "[[Home Assistant]]"
  - "[[91 Meigh Road Heating and DHW]]"
title: Home assistant automation to use excess solar
created: 2026-01-28T12:26:22
date: 2026-01-28
tags:
  - research
---
Need an automation to trigger heating (ie comfort temperature) 
- the heating is off during the day
- battery is full
- we're exporting excess solar
- we'll be heating required later

perhaps use the entities
- predicted heating energy remaining for day
- predicted solar generation remaining for the day

No point exporting to grid @ 15p only to buy it back later at 30p