Six months with solar and a Tesla Powerwall 3: what the numbers actually look like
Real generation, home use, battery and export data from the first six months of our 7.6kW east-west solar array and Tesla Powerwall 3.
Smart Energy
5 articles grounded in our own homes and equipment.
Our first Home Assistant automation: protecting the Powerwall during EV charging
How we stopped a supplier-managed daytime EV charge from draining the Tesla Powerwall, what the automation taught us and why parts are now disabled pending an EDF rebuild.
Using excess solar for hot water: our second Home Assistant automation
How we used Home Assistant to boost our Mitsubishi hot-water cylinder when the Powerwall was full, and why parts are now disabled while we rethink the logic for EDF.
Our smart-meter problems after switching energy supplier
A dated timeline of the missing readings, tariff delays and export problems we experienced after switching from E.ON Next to Octopus in February 2026.
Our 7.6kW solar and Tesla Powerwall 3 installation
What our 7.6kW east-west solar array and Tesla Powerwall 3 cost, what went wrong during installation and the lessons we would use if doing it again.