
Knowledge Base
Price explanation and calculation examples for ERE rewards — everything you need to know to make the best choice.
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Last updated: 2 Nov 2026
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How is the price determined?
The reward for EREs (Emission Reduction Units) is determined by the current market value on the emissions market. Three factors matter here: the gross market price, the sales costs on the emissions market, and the registrar's commission.
Registrars collect kWh and sell the CO2 reduction (EREs) on the open market to fuel suppliers.
About ±1.5% is withheld for the transaction on the trading exchange (sales costs of the emissions market).
The booking service provider withholds a percentage for audit, NEa registration and administration.
Business drivers can deduct the VAT on the commission; for individuals the commission includes 21% VAT.
In our comparison tool you see the earnings after deduction of all the above costs.
Calculation example: Individual (Home charger)
Based on 3,000 kWh charged per year, roughly 998 EREs.
| Step | Calculation | Result |
|---|---|---|
| Selling price | €0.3105 | (market price, indicative) |
| Sales proceeds | 998 ERE × €0.3105 | €309.88 |
| Sales costs emissions market | ± 1.5% | - €4.65 |
| Provider commission | 20% (incl. 21% VAT) | - €61.05 |
| Net payout | €309.88 − €4.65 − €61.05 | €244.18 |
Calculation example: Business (Office / VvE)
Based on 6,000 kWh charged per year at a business charge point, roughly 1,996 EREs.
| Step | Calculation | Result |
|---|---|---|
| Selling price | €0.3105 | (market price, indicative) |
| Sales proceeds | 1,996 ERE × €0.3105 | €619.76 |
| Sales costs emissions market | ± 1.5% | - €9.30 |
| Provider commission | 15% (excl. VAT) | - €91.57 |
| Net payout | €619.76 − €9.30 − €91.57 | €518.89 |
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