Do we already have a blueprint for: using over-production, shown in purple in the Energy dashboard, to heat my electric boiler?
I would like to setup an automation that triggers a switch. If my production is over a certain threshold (let’s say 1.000 Watt) I would like to switch on the boiler for hot water and keep it on as long as the production is more then I’m using. And it would be great if the boiler is on on ‘peak’ times like 7-8am.
In the Netherlands, like te rest of Europe, gas prices are rising like crazy and I have some extra kWh’s which I would like to use to reduce my gas usage.
I would be very interested. I’ve been trying to implement the logic for a while and it’s not easy. Especially when the inverter is only updated every minute and the electricity meter is updated in real time.
## automation for heat boiler when I have solar over-production
# heat boiler is drived with a REST command
# and its state is returned in sensor.heat_boiler_state (0 for OFF, 1 for ON)
# in my case, solar over-production is given by a negative number
- alias: heat boiler - start
description: 'start heat boiler when I have solar over-production'
mode: single
trigger:
platform: event
event_type: state_changed
event_data:
entity_id: sensor.power_injection
condition:
condition: and
conditions:
- alias: 'over-production > 1000 W'
condition: numeric_state
entity_id: sensor.power_injection
value_template: '{{ -(state.state | float) }}'
above: '1000'
- alias: 'heat boiler is OFF'
condition: numeric_state
entity_id: sensor.heat_boiler_state
below: '0.5'
action:
- alias: 'wait to confirm that over-production is really here'
delay:
hours: 0
minutes: 2
seconds: 0
milliseconds: 0
- alias: 'heat boiler becomes ON'
service: rest_command.com_bouton
data:
item: 1
- alias: 'small wait to not restart immediatly'
delay:
hours: 0
minutes: 0
seconds: 30
milliseconds: 0
- alias: heat boiler - stop
description: 'I stop heat boiler when I have no more over-production'
trigger:
- alias: 'no moer over-production'
platform: numeric_state
entity_id: sensor.power_injection
above: '-1'
condition: []
action:
- alias: 'heat boiler becomes OFF'
service: rest_command.com_bouton
data:
item: 0
mode: single
For the next one who searches for a similar solution I’ll post my final solution.
I got a Itho Daalderop Close-up boiler, 15 liters. This is sufficient for a 7 minute shower session. It’s connected to my Intergas boiler in a way that if the electric boiler is empty the gas boiler will take over. As a fall-back.
These are the two automations I’ve used. I’m using my smart meter and the production data.
It’s a 2kW boiler and my solar setup has a maximum production of 3.5kW. Currently I can use the grid a battery, meaning my energy company creates a bill based on net usage.
hallo, is het nog gelukt? ik wil precies hetzelfde gaan doen ik ben vrij nieuw met home assistant. kan jij mij op weg helpen? ik heb zonnepanelen en wil dat mn electrische boiler aangaat door mn smart stekker te activeren als ik 1500kw over capiciteit heb.
Yes, I succeed using the automation as in the post. I’m using the data from my Smartmeter which turns negative as my panels generate power. If I generate power and my net usage is lower then -1250 Watt for 2 minutes I switch on the boiler.
Oke, what steps did you do?have you a simplified manual? I use a zigbee power socket. Ik can automate the socket on and off. I don’t no where to start
Greetz Bill
dit heb ik gedaan ; maar het werkt niet wat staat fout. ik heb geen template zoals jij , zover ben ik nog niet. ik heb even als test maar 200 w aangehouden om te zien of de schakelaar aan gaat , maar helaas.
As far as I can see you have 2 triggers on the same sensor (should avoid that). Let’s use one trigger and only fill ‘below’. Currently it doesn’t trigger on because it can never be >1 and <-200 at the same time. Maybe re-use the example that I posted earlier.
My reply is in English so the complete community can learn if needed.
