Get more from the battery you already have.
Most batteries run a routine set once. Orza plans yours every half hour around your prices, your sun and your home. It’s free, there’s nothing to install, and you see what it would have saved before it touches your battery.
It does the sums, so you don’t.
A real plan for one day in the demo home: a 10 kWh battery with 4 kWp of solar, on a price that changes every half hour.
- 104:00 to 06:00Fills at the cheapest pricesBuys 9.6 kWh at 9.0 to 10.8p, the lowest of the day, and fills to 100%.
- 210:00 to 14:30Exports solar, keeps roomHolds at 80.2% and exports the solar, leaving room for the afternoon sun to fill.
- 314:30 to 17:00Fills from the sunThe afternoon sun takes the battery to 100% just before prices climb, at no cost.
- 417:00 to 20:00Runs the house through the peakImport reaches 63.0p at 18:30. The battery covers the house instead, and never goes below the reserve.
£260 a year more than self use. £185 more than a routine set by hand.
The same 9.5 kWh battery and 4 kWp of panels in 20 homes, through a full year on Agile. Orza came out ahead of the routine in all 20 homes.
- Self use, the maker’s defaultWhat the battery saves on its own£170.99
- A routine reset by hand every day£75.21 more than self use£246.20
- Orza, planned every half hour£260.14 more than self use, £184.93 more than the routine£431.13
Modelled, not measured: a 9.5 kWh battery and 4 kWp of panels in each of 20 homes, through one year on Agile with Outgoing Octopus’s fixed export rate. The full comparison
Free, with nothing to run at home.
Keep the app that came with your battery for warranty, firmware updates and safety alerts. For the daily schedule, there are five ways to do it.
| What | Your battery’s app | A supplier’s smart tariff | A paid planning app | DIY on Home Assistant | Orza |
|---|---|---|---|---|---|
| Works out the times for you | On some makes: see the list | Yes, on its own tariff | Yes | Yes | Yes, every half hour |
| What it costs | Comes with the battery. GivEnergy charges for its cloud | Part of the tariff’s rates | About £3 to £8 a month | Free software, on a computer of your own | Free, with no card |
| What you run at home | Nothing | Nothing | Nothing | A computer, kept on | Nothing |
| Makes and suppliers | Only that make | Only that supplier | A set list of makes | A long list, if you set it up | Ten makes and six suppliers |
| Why it did what it did | Sigenergy explains each action. Most don’t say | Its pages don’t say | The schedule or action it chose | Plans and charts you read yourself | The prices, the sun and the reserve behind every plan |
| How the saving is shown | Its own figures, where it gives them | On your bill | Its own estimate | Its own charts | Against what your battery really did, losing days in red |
From the products’ own pages, read on 3 November 2026. None has been run head to head against Orza. The options by name
Your maker’s app, make by make
| Make | Its smartest setting | Who picks the times | What Orza adds |
|---|---|---|---|
| Sigenergy | Its smartest setting: AI Mode | Who picks the times: Its AI, from the weather, your use and Octopus’s prices, and it explains each action | What Orza adds: A score against AI Mode on your own days, so you know which is cheaper |
| GivEnergy | Its smartest setting: Smart Tariff automation, on its paid cloud | Who picks the times: The automation, from the tariff you enter | What Orza adds: Your roof’s forecast and your home’s use in the plan, with the reasons shown |
| FoxESS | Its smartest setting: Agile automation | Who picks the times: The automation on Agile, to a target price you set | What Orza adds: No target price to choose, on any tariff |
| Solis | Its smartest setting: Dynamic Price Control in SolisCloud | Who picks the times: Its smart manager, from your habits and the weather. No UK supplier is named | What Orza adds: A plan built on UK tariffs, from six suppliers |
| AlphaESS | Its smartest setting: Octopus’s scheduling, seen in AlphaCloud | Who picks the times: Octopus, on its own tariffs | What Orza adds: Your choice of six suppliers, with the reasons shown |
| SolarEdge | Its smartest setting: SolarEdge ONE | Who picks the times: Its AI, in Germany and the Netherlands. We found no UK launch | What Orza adds: A plan built on UK tariffs, from six suppliers |
| SolaX | Its smartest setting: TOU mode | Who picks the times: You, by setting price periods | What Orza adds: The times worked out for you, every half hour |
| Tesla Powerwall | Its smartest setting: Savings mode | Who picks the times: Powerwall, inside the peak and off-peak periods of your plan | What Orza adds: A plan that follows prices changing every half hour |
| Sunsynk and Deye | Its smartest setting: Six timers | Who picks the times: You, by setting the times | What Orza adds: The times worked out for you, every half hour |
From each maker’s own pages and support guides, read on 3 November 2026. They change, so check your own app.
It only cycles your battery when the gap pays for the loss and the wear.
Chasing every small dip wears a battery for pennies. Every half hour, Orza plans the next 36 hours with these three in it.
- 82.1%Real losses, not datasheet figuresWhat a real battery gave back at the inverter. Cheap power is bought only when the peak pays for the loss.How efficient is a home battery?
- 1pA kWh for wearA move has to save more than that to be made. It gave up at most £5 a year on any tariff.What that means for your warranty
- 10 daysYour own roof’s sunThe forecast is scaled to what your panels really made over the last ten days, so the plan leaves the right room for the sun.
Start in Monitor only. See if it beats what you use now.
Every home starts in Monitor only. Orza plans alongside whatever runs your battery today and sends it nothing. Savings then shows, day by day, what your battery really cost against Orza’s plan.
| Day | Your battery | Orza’s | Difference |
|---|---|---|---|
| Wed 23 Sept | £4.92 | £5.13 | 21p more |
| Tue 22 Sept | £5.42 | £3.32 | £2.10 cheaper |
| Mon 21 Sept | £3.10 | £3.05 | 5p cheaper |
| Sun 20 Sept | £4.01 | £2.65 | £1.36 cheaper |
- Never with hindsightEach half hour is judged on what Orza knew at the time, from your own readings.
- Losing days in redA day your battery beat Orza shows in red, never averaged away.
- Four modes, one clickMonitor only, Assisted, Automatic control or Paused. Handing back is never blocked.
- Your battery never relies on OrzaYour reserve and its own limits always win, and it runs on its own settings whenever Orza isn’t sending.
Automatic control is built and not switched on yet: each make’s page says where it stands. How control and your login are kept safe
Made for your bill and nobody else’s.
- Not a battery maker or a supplier, so the plan is for your bill alone.
- Change supplier or tariff, and the plan carries on.
- Free, with no card. Paid tiers will come later, and there will always be a free version.
- Your readings are never sold and never used for advertising.
See what Orza would do with your battery.
Keep whatever runs your battery now, and score Orza against it. In Monitor only, nothing is sent to your battery, and the days Orza would have lost show too.