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Capacity type considered for available hosting capacity information (e.g., Firm and/or Flexible)
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Firm and flexible
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Description of what firm capacity means
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A fixed contracted capacity limit per energy direction, which, when agreed upon by both parties, the consumer/producer can use or supply back to the grid at any time. Non firm in its basis has a more regulated time of use component in its agreement.
Stedin currently does not distinguish between firm, non-firm, and flexible capacity when reporting available, requested, or reserved capacity.
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Description of the aspects/methodology that leads to firm capacity results
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The capacity assessment is based on comprehensive, in‑depth (load flow) scenario calculations. These studies ensure that the available grid capacity is determined on a robust, data‑driven basis, consistent with the grid operator’s planning and reliability standards.
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Description of what flexible capacity means (if applicable)
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Flexible capacity, refers to transport capacity that is not guaranteed at all times and can be reduced or curtailed by the grid operator when the network is congested. It is capacity that customers can use most of the time, but with the explicit condition that the grid operator may temporarily limit it to keep the system safe and reliable.
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Description of the aspects/methodology leading to flexible capacity results
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No distinction is made between firm, non-firm, and flexible capacity when reporting on available, requested, or reserved capacity in the map. Internal and shared capacity information outside of the national grid capacity map does base itself on additional computation methods and rationales to reach flexible capacity results.
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Description for the criteria and methodologies used that lead to the published information
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A complex prognosis model in addition to insight in all approved customer requests is used to derive the reserved capacity on a certain aggregation level of the grid.
The available connection capacity is derived from attributes of electrotechnical assets, the operating state of the grid, policy and expert review.
The requested capacity is derived from a waiting list of customers who have applied for transport capacity.
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