Why we built this.
When Octopus charges your EV during the day, your home battery drains to supply the load — because the two devices have no way to know the other exists. That single, invisible conflict can quietly waste stored energy and make the whole setup behave worse than it should. 1app.energy was built to stop that automatically.
The problem
The problem we kept seeing
When Octopus Intelligent Go dispatches a daytime EV charging session, the inverter sees a household load and the battery discharges to meet it. Neither device has done anything wrong. The battery is doing exactly what it is configured to do. The tariff is doing exactly what it was designed to do. The conflict is in the gap between them — a gap that no individual device manufacturer is incentivised to close.
The result is predictable but invisible: solar storage consumed by the car instead of the evening peak, a battery that is never quite where you expect it, and an energy bill that is slightly higher than it should be. None of it shows up as an error on any dashboard.
The gap
Why existing solutions do not fix it
Inverter manufacturers optimise for their hardware. EV charger manufacturers optimise for their charger. Energy suppliers optimise for dispatch efficiency. None of them have a live view of all the other devices in the home simultaneously.
The coordination layer — something that can see the Octopus dispatch signal, the battery state of charge, the solar generation rate, and the heat pump cycle all at once, and act on that combined picture — does not exist in any of those individual products. That is what 1app.energy is.
Our approach
How we approached building it
We started with the most common and most costly conflict first: Octopus Intelligent Go daytime sessions draining home batteries. That single problem affects a large number of UK homes and can create meaningful avoidable losses over time.
Solving it required four live API connections — Octopus, Solis, Zappi, and Daikin — and a coordination layer that decides, for each session, whether to hold the battery or hold and charge it further. That decision, made automatically, is the core of the current private beta.
The whole-home platform — tariff-aware scheduling, heat pump integration, full dashboard — is built underneath. It is already there. The rollout is paced because each home is different, and we review every request carefully before inviting.
Who we focus on
UK homes that have already made the investment
Solar panels, a home battery, an EV charger, potentially a heat pump — all on an Octopus smart tariff. These homes have everything they need to significantly reduce their energy bills. The problem is that the devices are not coordinated, and the losses from that are real but hard to see.
We are not trying to serve every home. We are trying to serve the homes where the problem is clear, the devices are supported, and the recoverable savings are meaningful.
Where we are now
Private beta, invitation only
We are reviewing requests carefully — not by sign-up date but by fit. If your home has Solis storage, a Zappi EV charger, and an Octopus tariff, it is likely a strong candidate.
If you have a Daikin heat pump as well, you are exactly the setup we are prioritising.
Sounds like your home?
Tell us which devices and tariff you are on. We review every request and invite in order of fit.