Peak Supply

In the ‘Besluit Leveringszekerheid Gas’ it is stated that Gasunie Transport Services (GTS) is responsible for the services of Peak Supply.

This implies that GTS accommodates the gas transport and the gas transport capacity to Suppliers that is needed to supply small consumers (G1A and G2A) at temperatures below -9°C.

For the service of Peak Supply, GTS calculates the required plancapacity each year. The required amounts are calculated based on historical temperature ranges and consumption in the previous winters on the relevant network points. The transport costs (entry and exit) that GTS reserves for Peak Supply during the winter months December, January and February, will be invoiced to the suppliers of small consumers (in these winter months) in proportion to their market share in the small consumer segment. The peak production tariff will be invoiced to the suppliers each month of the year, also in proportion to their market share.

Actual Peak Supply is the case when the effective daily temperature is below -9 ºC. In this situation, the peak threshold (=winter hourly fraction times the standard year usage) that GTS calculates each month per shipper will be exceeded. When the peak threshold is exceeded, the excess will be allocated back to the shipper via an entry allocation on the Virtual Point Peak Supply (NWP 301444). The excess volume that is allocated on this virtual point peak supply will be invoiced to the concerned suppliers in the next month.

The full text of the regulation (only available in Dutch) and an example calculation sheet can be found below.

Peak supply is described in the “Gas Act Security of Supply art. 1 and art. 2.”. Example calculations of peak invoices and costs can be found below.

GTS determined the tariff for peak supply in 2025. The peak tariff consists of two components: the peak supply tariff for production and a peak supply tariff for transport capacity.

The peak supply tariff for production consists of LNG Peakshaver installation usage costs, costs of the capacity purchased through a tender and costs to keep gas available. In addition, the tariff includes corrections to the peak supply costs from earlier years, like adjustments of settlements resulting from the revised Method decision 2022-2026.

The peak supply tariff for transport capacity consists of the costs of entry transport capacity for the Peakshaver for the months January and February 2025. As the completion of the peak supply task for winter 2025-2026 is not clear yet, no costs for transport capacity have been included for December 2025. This will be settled in the 2026 peak supply tariffs.

The peak supply tariff for exit capacity with regard to the local distribution exit-points follows directly from the tariff decision 2025.