Savings and Profit

The Portal estimates what your system earns and saves — and lets you keep those figures honest when your electricity prices change.

ROI / Profit on the Home page

At the bottom of the Home page:

• ROI — your Total Income so far against your Total Investment, as a payback percentage. Click the gear icon to set your investment amount.
• Profit chart — earnings over time (Day / Month / Year / Since Install), broken down into three parts:

Component	Meaning
Self-Consumption	Grid electricity you did not have to buy because you used your own solar energy
Feed-in	Income from exporting energy to the grid
Load Shifting	Savings from charging the battery when electricity is cheap and using it when it is expensive

💡 Profit figures are calculated from your electricity tariff — keep it up to date in [Electricity Tariff](Electricity Tariff.md) or the numbers will drift from reality.

Profit Calibration

If your tariff was wrong for a period (for example you switched supplier months ago but only updated the Portal today), use Profit Calibration to recalculate history:

• Click + Add and choose the device SN and the time range to recalculate
• The task appears in the list with its status — once finished, the profit charts reflect the corrected figures

💡 Recalculation runs in the background and can take a while for long periods.