I have been engaged in a multi year energy cost reduction programme.
Goal
Reduce costs of energy as I approach retirement. I want to be able to afford heating and using electricity in the home.
Must be achieved without impacting family (I have no desire to become my dad! “Turn off the lights, shut the door” etc)
There are multiple phases to this.
Phase 1 Reduce consumption - the cheapest energy is energy not used.
Phase 2 Offset energy usage, ie capture cheap rate overnight electricity
Phase 3 Move to an Electric Vehicle
Phase 4 Super insulate the house
Phase 5 Generate own energy
Phase 6 Update heating energy system
Phase 1 is now complete having consistently reduced electricity consumption by 50%.
It was bad, really bad using over 30 kWh per day in Dec 2020, now down to 16 kWh per day.
This has been achieved by, migrating three computers from intel to M1 machines.
Updating washing machine, dryer, freezers to more energy efficient models.
Significant usage of home automation, including making 90% of house lighting automated, motion sensors, link usage (if tv is on and it is below a level of luminance then turn on lighting).
Using HA to monitor anything that could be a heavy user of elec or a smaller user but does it 24x7. Using zwave switches to only turn them on when needed, ie powered a lot of stuff off after Goodnight had been called and powered back when 2 out 3 motion sensors detect movement in the morning.
Also, set all devices in unused rooms to turn off when not in use, guest rooms/ guest bathrooms etc.
So now all ready for Phase 2 and 3 to start In a month or so.