Svk Målet Maximal Tillgänglig Kapacitet (2021)

Svenska kraftnät press/explainer page describing how the TSO’s control room maximises available transmission capacity while always maintaining N-1 security, and why that available capacity fluctuates over time.

Title: Målet: Alltid maximal tillgänglig kapacitet i ledningarna

Summary

Svenska kraftnät’s control room works around the clock to use the transmission grid maximally without ever compromising the N-1 criterion — the requirement that the grid survive the loss of any single component (line or plant) without affecting customers. Because of this, available capacity is never a fixed number: it shifts with planned maintenance/construction, and with structural changes in power flow patterns (the raw does not characterize this as an increasing or accelerating trend).

East–west flow, central Sweden: historically Swedish flows ran predominantly north–south, and the grid was designed around that. New east–west flows through central Sweden — attributed by the raw only to general “changes in the power system” (no specific driver named) — now also constrain how much transfer capacity can be safely offered.

Production siting is not Svk’s call: Sweden and Europe run a deregulated electricity market, so Svenska kraftnät cannot decide where new generation is located to relieve a constraint. It can only take grid-side measures — network reinforcement, new equipment, ancillary services (systemtjänster) — to make more capacity available within the existing topology. A hypothetical example given: closing a 200 MW thermal plant in southern Sweden could reduce transfer capacity to the south by roughly 100 MW — a double effect where both local production and transfer capacity fall together.

Track record: the article’s own (unattributed) framing is that the control room maximises capacity “utan att äventyra driftsäkerheten” (without compromising operational security) around the clock, year-round — this phrase is the piece’s lead/summary line, not a quote from driftchef Pontus de Maré himself; his own quoted remarks concern maintenance/construction outages and new consumption/production patterns. The N-1 standard behind this framing is covered in depth by Source - Säkerhetskrav Hinder För Elektrifieringen (2024) and Source - Energiforsk 2026-1165 Stokastisk Driftsäkerhet Transmissionsnät (2026).

Relevance to wiki

• N-1 Criterion — primary source for the plain-language “what does N-1 actually require operationally” framing and the east-west flow / production-siting examples
• Svenska kraftnät — control-room practice, ancillary services as a lever for available capacity
• Grid Capacity Utilization — concrete example of capacity being a moving target rather than a fixed number
• Bidding Areas — background on the north-south flow assumption the grid was originally built around