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eMabler UI

More complex spot price scenarios

There might be cases that you want to impose restrictions to spot price tariff cost calculations. For this reason we have introduced price cap and cost percentage fields for spot price tariffs to cover more complex scenarios.

Price cap and cost percentage​

In some markets, such as Norway, the government provides subsidies when energy prices get too high. If you want to take this subsidy (or otherwise want to add some limit to spot prices) into account when calculating the costs with the spot price, you can utilize price cap and cost percentage. The price cap is the maximum price that can be charged for energy. Any amount above this cap is subject to the cost percentage. The cost percentage is the proportion of the excess price (the amount by which the spot price exceeds the price cap) that is added to the total price.

Note

Price cap and cost percentage are only supported with OCPI related price calculations for now. We will introduce support for site related cost calculation later.

Example 1​

Let's say the spot price for the hour is 0.27 NOK/kWh. If the price cap is 0.18 NOK/kWh and the cost percentage is 30%, then:

  • The excess amount is 0.09 NOK/kWh (0.27 - 0.18).
  • Applying 30% to this excess gives an additional 0.027 NOK/kWh.
  • Therefore, the total price is 0.21 NOK/kWh.

Price cap example

Example 2​

If you set the cost percentage to 0%, the spot price will not exceed the price cap. For instance, if the price cap is 0.18 NOK/kWh and the cost percentage is 0%, the total price will always be capped at 0.18 NOK/kWh for the hour, regardless of how high the spot price goes. This is useful if you want to guarantee that your customers will not pay more than a certain amount for energy.