Svk Regional NUP Mellansverige (2026)

Title: Regional nätutvecklingsplan — Gävleborg, Örebro, Dalarna, Värmland, Västmanland och Uppsala

Summary

Svenska kraftnät’s regional transmission grid-development plan (regional NUP) for the six Mellansverige counties: Gävleborg, Örebro, Dalarna, Värmland, Västmanland and Uppsala. It sets out grid conditions and flows (predominantly north–south over snitt 2 between SE2 and SE3, plus growing east–west exchange with Norway/Finland), the long-term grid build-out, and — most relevant here — where new consumption, production and flexibility can connect, dividing the region into six sub-areas (A–F) by connection suitability over the next 10–15 years.

Grid build-out (NordSyd)

The region is dominated by the NordSyd investment package, made of four “legs”: Uppsalabenet, Västeråsbenet, Karlstadbenet and Hallsbergsbenet. NordSyd both reinvests ageing 220 kV and seriekompenserade 400 kV lines and reinforces to add capacity. A recurring theme: replacing series-compensated 400 kV lines with non-compensated lines (double 400 kV for Karlstadbenet; Hallsbergsbenet is under study as a reinforced non-compensated line), because series compensation makes it hard to connect new stations along a line. New stamnät stations are planned (e.g. Hudiksvall, Ljusdal, Ockelbo, north of Malung, near Karlstad, north of Västerås); Örebro–Köping is uprated 220 → 400 kV; Fenno-Skan 1 replacement is under study.

Six connection sub-areas (A–F)

The plan classifies the region into six sub-areas by suitability for new connection; flexibility is named as a fit in every sub-area (in A, D and E it is the only use the plan names as suitable):

Key claims and observations

1. A transmission-level flexibility-siting signal. Where DNDPs and FNA quantify how much flexibility a grid area needs, this regional NUP says where flexibility can usefully connect — Svk explicitly tagging all six sub-areas as suitable for flexibility (in A, D and E it is the only use named). Useful input to actors deciding where to place flexible resources (BESS, demand response, datacentre flex).
2. Snitt 2 is the structural backbone. The region’s defining constraint is north–south transfer over snitt 2 (SE2→SE3), increasingly crossed by east–west flows from Finnish nuclear and Norway→UK export — context for Bidding Areas and the Svk bidding-zone analysis.
3. Series-compensation removal as a connection enabler. Swapping series-compensated lines for non-compensated doubles is framed as what allows new station (and therefore new load/production/flex) connections — a concrete reason grid build-out and connection capacity are coupled.
4. Offshore wind is the swing factor in sub-areas C and D: if realised at scale, the grid needs further reinforcement before more production can be received.

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