# Where do the numbers on the Financial Benefits page come from?

The Financial Benefits calculated based on the tariffs that you input. You can take a look at how to create and manage your tariffs [here](https://help.easy-pv.co.uk/books/performance-and-consumption/page/editing-and-creating-tariffs).

Here is a breakdown of the figures on the graph given on the Financial Benefits page of the Customer Proposal.

[![Screenshot_20251013_123616.png](https://help.easy-pv.co.uk/uploads/images/gallery/2025-10/scaled-1680-/6tkrcGdNK5ovBdbu-screenshot-20251013-123616.png)](https://help.easy-pv.co.uk/uploads/images/gallery/2025-10/6tkrcGdNK5ovBdbu-screenshot-20251013-123616.png)

**A -** The total cost per year before the PV system.

**B -** The cost after PV and battery including savings from exporting (In this case, a negative number because they will actually be making a profit).

**C -** The difference between the original cost before PV & battery and after.

**D -** The export profit with energy management (overnight charging).

**E -** The difference between how much you pay for energy before solar and what you 'pay' after energy management.