// HOW IT WORKS
How the system operates to deliver you savings.
Your battery charges overnight, when power's cheapest. By day it runs your home. Add solar and you export what you don't use. Here's a typical day, hour by hour.
1
A typical day
Same home, same demand. The only difference is solar.
Battery only
Battery & solar
Your home's demandSolar generationFrom gridFrom batteryFrom solarSolar exportedBattery exported
How to read it.Time runs left to right across one day. The black line is your home's demand. The shading below it shows what's meeting that demand at each moment. Above the line is power coming in from the grid. Below the line is power going out to the grid for export.
Indicative only.Both charts are illustrative. Actual demand, generation and export vary with the season and how you use power. The solar chart models a typical 12-panel array (5.58 kWp) on a September day.
2
The daily cycle
Where your power comes from, hour by hour.
1
Overnight · 00:00–06:00
The grid charges the battery and runs the home. Power's at its cheapest, so there's no reason to touch the battery yet.
2
Daytime
The battery takes over and the grid steps back. With solar, the panels run the home first, top up the battery, then export the rest.
3
Evening
As solar fades, the battery runs the home. Any charge left over exports to the grid in the final hours.
The maths.00:00–06:00 is a typical off-peak window. This assumes a tariff with a cheap overnight period; if you're not on one yet, switching is straightforward. Solar meets the home first, then charges the battery, then exports the rest. Charts are indicative. Off-peak charging and evening export are shown as flat blocks, and the vertical scale is non-linear so smaller flows stay readable next to the big ones. The example uses a 10 kWh/day home with a 10 kWh battery. The solar chart uses 12 × 465 W panels (5.58 kWp) generating about 21 kWh on a September day.