With a dynamic tariff, the price you pay for electricity changes every hour (or quarter of an hour), based on the power exchange market your energy supplier uses. When you set up dynamic tariffs, Smappee retrieves these market prices automatically and adds the costs and taxes of your supplier on top.
Keep your energy contract or a recent bill at hand. You need:
- the power exchange market your supplier bases its prices on (for Belgium, this is EPEX Spot / Nord Pool EMCO)
- the extra costs your supplier adds on top of the market price, for both consumed (import) and injected (export) energy
- the VAT percentage
- In the Smappee app, go to Settings > Tariffs and tap Set up your tariffs.
- Choose Dynamic tariffs.
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Under Market, select the power exchange market your supplier bases its dynamic prices on. You can use the search field to find your country quickly.
- On the Fixed rate and multipliers screen, fill in the costs of your supplier for Import and Export. All fields are optional: leave a field blank if it does not apply to your contract. See the explanation below.
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Check the summary and tap Save.
The app calculates import and export with a different formula. Your supplier adds costs to the energy you consume, and deducts costs from what it pays you for the energy you inject.
| Formula | |
|---|---|
| Import | Total price = (market price × multiplier + additive) × volume × tax multiplier |
| Export | Total price = (market price × multiplier − subtractive) × volume × tax multiplier |
| Field | What it means |
|---|---|
| Multiplier | A factor your supplier applies to the market price, for example 1.05 if the supplier adds 5% to the market price. |
| Additive (€/kWh), import only | A fixed amount per kWh that your supplier adds on top of the market price for the energy you consume, for example a risk premium or supplier fee. In earlier versions of the app this was called "Fixed rate". |
| Subtractive (€/kWh), export only | A fixed amount per kWh that your supplier deducts from the market price for the energy you inject. |
| Tax multiplier (%) | The VAT percentage. Enter the percentage itself, for example 21 for 21% VAT. |
Example (import): the market price is €0.10 per kWh, your supplier uses a multiplier of 1, adds €0.02 per kWh, and VAT is 21%. One kWh then costs (0.10 × 1 + 0.02) × 1 × 1.21 = €0.145.
Example (export): with the same market price of €0.10 per kWh, a multiplier of 1 and a subtractive of €0.03 per kWh, you receive (0.10 × 1 − 0.03) × 1 = €0.07 per kWh you inject, before tax.
Once saved, go to Settings > Tariffs. You now see a graph of today's dynamic prices for your market, in € per kWh.
The dynamic prices are also shown in the electricity consumption graph, as a grey line with its own scale on the right in € per MWh. Tap the graph to see the dynamic rate at a specific moment, next to your consumption.
- Go to Settings > Tariffs and tap Details.
- Tap the gear icon next to Dynamic tariffs to change the market or the multipliers.
Switched to a contract with fixed or peak and off-peak prices? On the same screen, tap Set up structured tariffs.
Want your charging station to charge at the cheapest moments of the day? See How can I use Smappee to charge at the cheapest moments of the day (smart charging).
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