Ellevio

Ellevio AB (org. nr 556037-7326) is one of Sweden’s largest electricity distribution companies.

Corporate structure note: The Ellevio group contains at least two distinct entities. Ellevio AB is the regulated DSO (the entity covered by this page). Ellevio Energy Solutions is the unregulated commercial arm responsible for BESS project development and other generation/storage investments. Art. 36 of the Clean Energy Package requires unbundling of DSO ownership from generation/storage (beyond narrow exceptions); accordingly, battery assets developed by Ellevio Energy Solutions are not DSO assets. Confusion between the two entities is common in public sources. When a source mentions Ellevio in the context of battery development, optimization contracts, or FCR market participation, it typically refers to Ellevio Energy Solutions rather than the DSO. See Flower for the Flower partnership with Ellevio Energy Solutions (Grums 10 MW BESS, 2022; three projects total as of 2024). (Source - Flower Website (2024-2026)) It owns and operates “drygt 8 360 mil elnät” — just over 8,360 Swedish mil (≈83,600 km) across both regionnät and lokalnät — serving close to one million customers. Ellevio’s network spans geographically dispersed regions: the western coast (Halland, Orust-Tjörn, Norra Bohuslän), Västra Götaland (Skaraborg), the greater Stockholm area (Stockholm, Lidingö, Täby, Ekerö, Nynäshamn, Vallentuna), central Sweden (Värmland, Dalarna), and northern regions (Hälsingland) plus several large wind/hydro production clusters in Ljusdal and Härjedalen (Torpberget, Olingan, Laforsen, Tovåsen).

Network structure

Ellevio operates both regionnät (regional grid, 30–220 kV) and lokalnät (local grid, up to 24 kV) across its territory. The network is divided into 17 delområden (sub-areas), each defined by electrical boundaries (gränspunkter to networks owned by other parties).

Delområden overview

Stockholm (delområde 7) alone serves approximately 500,000 customers — roughly half of Ellevio’s total base. Stockholm’s regionnät (220 kV → 110 kV → 33 kV) connects directly to Svk’s stamnät, making it the most complex sub-network. Ellevio holds areas concession up to and including 110 kV in Stockholm.

The production clusters (Torpberget, Olingan, Laforsen, Tovåsen) are located in Ljusdal and Härjedalen and are wind/hydro connection hubs with radiella 130 kV lines to stamnät stations. Tovåsen is currently ~650 MW of wind; Laforsen integrates hydropower and will be affected by NordSyd (220 kV decommissioned, replaced by new 400 kV feed). Ellevio holds linjekoncession for the 130 kV lines in these areas.

Forecast drivers (2025–2034)

Key demand growth drivers across Ellevio’s network:

• Data centers: major driver in Hälsingland (+174% consumption by 2034 — dominated by data centers and hydrogen production) and Stockholm (server/data halls explicitly named)
• Industry electrification: primary driver in Värmland (+31%) and Skaraborg (+255%)
• Solar parks: driving both Halland (+593% production) and Skaraborg (+526% production)
• Transport: EV charging and logistics electrification across all areas
• Tunnelbana expansion: Stockholm’s metro system extension adds significant load

Skaraborg stands out as the fastest-growing area for both consumption (207→734 MW, +255%) and production (89→557 MW, +526%), driven by new industrial connections and large-scale solar. This reflects Skaraborg’s position at the intersection of agricultural land conversion and industrial growth in Västra Götaland.

Current flexibility tools

Ellevio uses four tools to manage congestion while network investments are underway (all described in §2.3 of the DNDP, Source - Ellevio Nätutvecklingsplan 2025-2034):

Villkorade Avtal — conditional connection agreements requiring curtailment within 15 minutes when a DSO threshold is exceeded. Used for both consumption and production customers in areas with subscription constraints. Ellevio implements the OpenADR SIMPLE variant: binary Curtail/Restore events, 20-minute period, pre-agreed power levels (not transmitted in the event payload). (Source - Energiföretagen Supplement Conditional Grid Connections (2025))

Tillfälliga abonnemang (temporary subscriptions) — Ellevio purchases a temporarily higher subscription limit from its overlying network operator (Vattenfall Eldistribution or Svk) when short-term forecasts indicate the standing limit will be exceeded. No guarantee these can always be secured; not a firm capacity solution.

Effektabonnemang (capacity tariffs) — Ellevio introduced capacity-based grid tariffs for households, cottages, and small commercial customers from 1 January 2025, incentivising load-shifting from peak hours. Ellevio’s model: average of the three highest timmedeleffekter in different calendar days per month; night-time peaks (22:00–06:00) reduced to 50% of their value in the billing calculation. Ellevio decided to drop the effektavgift and revert to a flat + rörlig model from 1 June 2026 — described as intäktsneutral. The decision was motivated by the changed regulatory context (EIFS 2022:1 repeal; pending new Ei framework) and by the desire for stability and clarity in pricing. This decision was documented in Ei’s PM2026:07 supervisory review of effektavgifter, which confirmed Ellevio’s model was compliant with current regulations. In April 2026, Ei opened a formal tillsyn specifically of Ellevio’s effektavgifter design — one of five DSOs selected — investigating whether the model meets ellagen and Electricity Market Regulation Art. 18 requirements. The five were selected for geographic and size variation and on the basis of customer complaints. Ei’s konsekvensutredning for the EIFS 2022:1 repeal notes that DSOs facing the tillsyn have already invested ~2–3 årsarbetskrafter in tariff development — this work is largely sunk regardless of the outcome. (Source - Ei Tillsyn Elnätsavgifter (2026), Source - Ei Konsekvensutredning EIFS 2022-1 Upphävande (2026), Source - Ei PM2026-07 Effektavgift Supervision)

Produktionsgaranti (production guarantee) — Ellevio has contracted agreements with large generation assets within delområden. These guarantee a minimum production volume that can be dispatched (avropas) when forecast consumption threatens to exceed Ellevio’s subscription limit against the overlying network. Distinct from villkorade avtal in that it targets production upwards (or guarantees production availability) rather than downregulating consumption. (Source - Ellevio Nätutvecklingsplan 2025-2034)

Flexibility stance

Ellevio describes itself as early in the maturity journey for flexibility solutions: “relativt tidigt på mognadstrappan för flexibilitetslösningar, primärt utforskade pilotprojekt”. As of 2024, no active market-based flexibility solutions exist in any of Ellevio’s 17 delområden:

“Marknadsmässiga lösningar i dagsläget saknas i Ellevios delområden — villkorade avtal en passande lösning i samtliga delområden där det finns ett behov.” (§3.3.2)

This places Ellevio in an intermediate position in the Swedish DSO landscape:

• E.ON Energidistribution: active flex markets in 12 areas; villkorade avtal as backstop
• Ellevio: no active markets; using villkorade avtal + produktionsgaranti as primary tools; explicitly open to market development as tools mature
• Vattenfall Eldistribution: no active markets; explicitly closed to market development (stated no conditions for market viability anywhere)

Ellevio did participate in sthlmflex (seasons 1–2, Flexibility Market) as a regionnät DSO in the Stockholm area, alongside Svk, Vattenfall, and E.ON. The Bilaga A redirection report (2022) notes sthlmflex as “still under development” and not yet adequate for operational use. The market subsequently closed (season 3 was the last). (Source - sthlmflex säsong 3 (2022-2023))

For FNA 2026, Ellevio does report quantified flexibility needs per delområde (unlike Vattenfall’s N/A across all areas). The key needs are in Värmland (0→320 MW consumption; 0–240 MW production) and Skaraborg (0→450 MW production, indicative). (Source - FNA Webinar 7 (2026-03-16))

Key constraints and investment dependencies

Stockholm cluster — Svk dependency

Five delområden (Stockholm, Lidingö, Täby, Ekerö, Nynäshamn, Vallentuna) all have overlying constraints dependent on Svk’s stamnät investment packages:

• “Stockholm Ström” — Svk investment package addressing the stamnät bottleneck feeding Stockholm
• “Storstockholm Väst” — Svk package for the western Stockholm area

Both packages are expected to complete around 2031. Until then, all six Stockholm-area delområden carry residual overlying constraints. Ellevio’s local flexibility needs in Stockholm itself are modest (0 near-term, up to 130 MW by 2034) but the constraint is primarily an overlying stamnät problem, not a local distribution problem.

Värmland — dual constraint

Värmland has constraints on both consumption and production sides, with overlying stamnät investments not expected until 2035. Until then, Ellevio must manage with villkorade avtal, produktionsgaranti, and tillfälliga abonnemang. Growing wind and hydro production in northern Värmland against heavy industrial consumption in southern Värmland creates a persistent two-directional management challenge. Fortum’s hydropower (notably the Höljes facility) is a key production asset.

Hälsingland — constraint resolved by NordSyd

Hälsingland is the one area where Ellevio has no flexibility need because NordSyd provides sufficient stamnät capacity. The ongoing NordSyd investment program is expanding transmission capacity through northern Sweden, directly benefiting Hälsingland’s connection points. Ellevio and Svk maintain continuous dialogue on subscription levels.

Laforsen — NordSyd transition

Laforsen’s 220 kV connection to Svk will be decommissioned as part of NordSyd and replaced by a new 400 kV feed. This is a structural change to the production cluster’s stamnät interface.

Dalarna — existing production flex need resolving

Dalarna currently has a 350 MW production curtailment need (0–2yr horizon, indicative) due to hydropower and wind exceeding stamnät capacity in off-peak periods. This need is expected to resolve in the 3–5yr horizon as stamnät investments come online (~2032).

Skaraborg — solar park explosion

Skaraborg has the largest anticipated production growth in Ellevio’s network: from 89 MW (2025) to 557 MW (2034) in Scenario 1. The production flexibility need is 0–450 MW by 6–10 years (indicative). The Skaraborg region is seeing very large solar farm connection requests; its two stamnät connections (Moholm and Timmersdala, both via Vattenfall) will be under pressure.

Digital infrastructure

Ellevio co-developed the SWITCH flex market platform through its participation in sthlmflex. Ellevio’s OpenADR variant for Villkorade Avtal communication uses the SIMPLE binary Curtail/Restore approach (PT20M, pre-agreed power limits, no real-time metering required) — simpler to implement than E.ON Energidistribution‘s dynamic CONSUMPTION_POWER_LIMIT variant but without per-event power calibration or real-time delivery validation. Full parameter comparison at OpenADR › Swedish production implementations. (Source - Energiföretagen Supplement Conditional Grid Connections (2025))

Ellevio co-authored Source - FlexAbility Delrapport 3 (2025) (with Plexigrid) — the quantified DSO value case report including data from Ellevio’s Stockholm network. This makes Ellevio an active participant in the FlexAbility research consortium despite having no active flex markets.

Ellevio is also one of the DSO signatories on the FNA 2026 tripartite agreement (alongside Svk, E.ON, Vattenfall, Göteborg Energi, Kraftringen Nät via Energiföretagen Sverige). (Source - FNA Överenskommelse Svenskt genomförande 2026 (2025))

2024 redispatching — regional grid works event

In 2024, Ellevio reported 220,150 MWh of redispatching to Ei under Art. 13.4 EMR — by far the largest volume of any DSO and 99% of the total DSO redispatching reported nationally. Resources used: hydro (201,188 MWh, 91%), wind (14,698 MWh, 7%), and demand response (4,264 MWh, 2%).

The cause is structural: ongoing works at the regionnät level required sustained redispatching to manage resulting constraints. This is a grid investment programme event, not a reflection of mature market-based congestion management. Ellevio itself continues to describe its flexibility stance as “early maturity” with no active flex markets — the 220,150 MWh was achieved primarily through hydro and wind redispatching tied to production agreements (produktionsgaranti and villkorade avtal), not open market procurement.

The 4,264 MWh demand response component does represent active use of Ellevio’s villkorade avtal portfolio and/or bilateral agreements for load curtailment.

Context: Sweden’s total DSO redispatching for 2024 was 221,906 MWh — meaning Ellevio accounts for 99% of it. Excluding Ellevio, all other Swedish DSOs combined redispatched just 1,756 MWh. (Source - Ei R2025-13 Omdirigering i Sverige 2024)

SGI data — flexibility portfolio 2024

Ei’s mandatory SGI reporting (EIFS 2022:5) provides the most granular public view of Ellevio’s flexibility portfolio, disaggregated by reporting unit:

Villkorade avtal portfolio (No_ba_cons)

Zero activations (No_ba_cons_proc = 0) in both units in 2024, consistent with Ellevio’s stated last-resort philosophy. The 34.1 MW regionnät average is unsurprising for large industrial customers connecting at regional voltage; the 22.3 MW lokalnät average reflects that Ellevio’s lokalnät bilateral agreements are with large commercial/industrial consumers, not households.

Caveat — Ellevio’s lokalnät figures likely represent connection-point aggregates, not individual villkorade avtal: 311 agreements × 22.3 MW = 6,935 MW, which is 110% of Ellevio’s total network peak demand (~6,295 MW from the DNDP 2025 forecast). If these were individual villkorade avtal customers, their contracted capacity would exceed the entire network’s demand — impossible. The near-100% match instead suggests Ellevio counts all major network connection/delivery points that together cover the full load (sub-DSOs, large delivery nodes, or all subscription agreements with any conditional clause). All other SGI reporters have bilateral agreements averaging 0.03–11 MW; Ellevio’s 22.3 MW is an order of magnitude higher, confirming a different reporting methodology. These figures should not be interpreted as evidence of 311 active villkorade avtal in the narrow regulatory sense.

Produktionsgaranti (No_ba_prod, regionnät)

One production agreement at exactly 320 MW — almost certainly the Värmland hydropower produktionsgaranti (Fortum’s Höljes facility or equivalent). Activated twice in 2024 at 150 MW each, directly corroborating the large hydro redispatching volumes (201,188 MWh) reported under Art. 13.4. The regionnät lokalnät also shows 9 production agreements (avg 2 MW, max 5 MW) with zero activations.

Energy storage (ES_tot)

ES_tot_direct = third-party storage directly connected to the grid (e.g., standalone BESS). ES_tot_other = other storage not owned by the DSO (behind-the-meter batteries, etc.). The 92.7 MW ES_tot_other figure is the second-largest in Sweden after E.ON (see Energy Storage). (Source - Ei SGI Data 2023-2024)

Data gaps

• Actual count of villkorade avtal in the strict regulatory sense — Ei R2025:13 records 4,264 MWh demand response from Ellevio in 2024 (confirming some were activated), but the SGI No_ba_cons figures (311 lokalnät agreements covering ~110% of total network demand) are structurally inconsistent with individual villkorade avtal; Ellevio’s DNDP or annual redispatching report likely contains the true portfolio count
• Identity of the 320 MW produktionsgaranti counterparty — almost certainly Fortum’s Höljes hydropower facility in Värmland, but not confirmed in sources ingested

Relationship to wiki topics

• Distribution Network Development Plan: Ellevio’s DNDP 2025–2034 is the third major Swedish DSO DNDP in this wiki; see Source - Ellevio Nätutvecklingsplan 2025-2034
• Villkorade Avtal: Primary current tool for congestion management; Ellevio OpenADR variant documented in industry standard
• Flexibility Market: No active markets; participated in sthlmflex (closed); described as “early maturity” stage
• Flexibility Need Assessment: Reports quantified needs; key informant for Värmland and Skaraborg needs in FNA 2026
• NordSyd: Directly affects Hälsingland (constraint resolved) and Laforsen (220 kV → 400 kV transition)
• OpenADR: Ellevio is one of two DSOs with production OpenADR implementations; its SIMPLE variant documented as the “Ellevio variant”
• E.ON Energidistribution: Key comparative: E.ON operates active flex markets in SE3/SE4; Ellevio does not; both have OpenADR villkorade avtal implementations
• Vattenfall Eldistribution: Vattenfall is overlying regionnät operator for most of Ellevio’s lokalnät areas (Halland, Orust-Tjörn, Norra Bohuslän, Skaraborg, Nynäshamn, Ekerö, Lidingö, Täby, Vallentuna)