Ei Justerad Utnyttjningsgrad (2024)

Document: Beräkning av justerad utnyttjningsgrad, Energimarknadsinspektionen (Ei). The earlier extraction (Raw/PDF extractions/Justerad-utnyttjningsgrad/) is stamped “Ei 1000 v-1.1, 2024-03-27”; the current PDF (Raw/Justerad-utnyttjningsgrad.pdf) is stamped “Version 3, 2025-08-25” (page footers 2025-04-22). The substantive text is identical in both.

Legal basis: EIFS 2023:6 (om vad som avses med kvaliteten i nätverksamheten och vad som avses med ett effektivt utnyttjande av elnätet vid fastställande av intäktsram)

Purpose

Explains a new reporting mechanism — the justerad utnyttjningsgrad (adjusted utilization rate) — that DSOs with increased local production (new production-only connection points) can submit to Ei from 2028, when the 2024–2027 revenue frames are reconciled.

Background: the utnyttjningsgrads-incitament

The utnyttjningsgrad feeds the incentive for efficient grid utilization (incitamentet för effektivt nätutnyttjande; also called incitamentet för jämn belastning in the document) in Ei’s intäktsramsreglering (revenue cap regulation). This document does not describe the incentive’s design or its place among the other incentive components — see RP5 Revenue Cap Methodology (2028–2031) for that context.

Formula (per EIFS 2023:6):

Utnyttjningsgrad = mean of all daily average loads / mean of the 4 highest daily peak loads during a calendar year

The utnyttjningsgrad is reported annually as part of the DSO’s årsrapport (annual report), calculated as described in Ei’s Neon reporting handbook. The normperiod is 2018–2021 (four years, starting six years before the supervisory period). The document states that the norm for the incentive is always the regular utnyttjningsgrad; the outcome is also based on the regular figure unless the DSO submits an adjusted one, in which case the adjusted figure is used for the outcome instead.

The distortion problem

The document does not state the rationale explicitly; its worked example (below) shows the mechanism. New pure-production connection points sit outside the regular calculation (which uses only boundary points). In the example’s hour 1, the new production adds to the flow exported to the adjacent grid, so including it gives a lower hourly mean power than excluding it; in hour 2 it reduces the flow imported from the adjacent grid, so including it gives a higher one. The direction of the difference therefore varies by hour (wiki reading of the example, not an Ei statement).

The adjustment mechanism

DSOs that have had increased local production — new production-only connection points commissioned on or after 1 January 2022 (the year after the normperiod 2018–2021 ends) — may submit a justerad utnyttjningsgrad.

Key definition: Eligible production points must be exclusively production facilities. The following are excluded from eligibility (mixed-use):

• Residential customers with rooftop solar
• Housing associations with solar
• Public buildings with solar
• Farmers with wind production at the same connection point as other activities

Only facilities that consume electricity solely from the grid or from their own production in order to run the production plant qualify. (The document gives no examples of qualifying facilities such as wind farms or solar parks.)

Calculation: Same formula as regular utnyttjningsgrad; the difference is which points (gränspunkter and anläggningspunkter) are included:

• Regular: boundary points (gränspunkter) between grid areas, except those the DSO is obliged to measure under förordning (1999:716) om mätning, beräkning och rapportering av överförd el, which are left out of the hourly summation
• Adjusted: also includes the new production connection points (their injected power is entered with positive sign in the hourly summation)
• Hourly mean power (“summerat timeffektuttag”) is the absolute value of the signed sum over the points for each calendar hour; the daily maximum is the highest hourly value in a day

Example (from document):

In hour 1, production increases export → adjusted gives lower flow than unadjusted. In hour 2, production reduces import → adjusted gives higher flow than unadjusted.

Reporting rule

• Deadline: 31 March 2028 (three months after RP4 ends 31 December 2027)
• Frequency: Every four years, when a supervisory period’s revenue frames are reconciled (first time 2028); the adjusted figure is used in calculating the adjustment for the incentive
• Only for DSOs with increased local production: if a DSO does not submit, Ei uses the regular utnyttjningsgrad from the annual reports
• Coverage: Values for all four years of the supervisory period (2024–2027) are submitted together
• Separate from årsrapporten: This is not part of the annual reporting cycle

Relevance to wiki topics

• Ei: Part of the revenue cap system’s utilization incentive; the adjustment (wiki reading) is meant to keep the incentive from being distorted by new production connections
• Distribution Network Development Plan: DSOs with significant new production connections (e.g. offshore wind, large solar) need to track this for the 2028 reconciliation
• Flexibility Market: Tangential relevance — the utnyttjningsgrads-incitament is one of Ei’s tools for shaping DSO behaviour; the adjusted calculation makes it more neutral with respect to DER connection decisions
• Generator Connection Requirements: Pure-production facilities are the eligible category — this interacts with the growing queue of wind/solar projects seeking connection