Flex Wiki — Thematic Navigator

Quick-access map organized by question type — find the theme you’re after and jump straight to the relevant pages. Full alphabetical page catalog: Index. Clustered source catalog: Sources. Terminology: Glossary. Forward-looking dates: the Regulatory Timeline tool (rendered from Site/Regulatory Calendar.md).

Grid fundamentals

Physical grid structure — voltage levels, equipment, transmission vs. distribution

Core pages: Electric Grid Structure, Electric Power Distribution, Distribution Transformer, Substation

EU regulatory machinery

What the EU requires, when, and at what legal level — Directives, Regulations, Network Codes

Core pages: Clean Energy Package, Electricity Market Design Reform 2024, Network Code on Demand Response, Flexibility Need Assessment, Generator Connection Requirements, Balancing Markets, ACER

Sources: clusters A (EU primary legislation), B (NC DR / FNA / FIS), C (generator connection) in Sources

Swedish regulatory framework

How EU law lands in Sweden — transposition, Ei guidance, ellag, industry recommendations

Core pages: Ei, Distribution System Operator, Elmarknadslagen, Villkorade Avtal, Demand Response, Centralt Datahanteringsverktyg, Distribution Network Development Plan, Energy Communities, Anvisningssystem, Energiföretagen Sverige, Konkurrensverket, Accelerationskontoret

Sources: clusters D (Swedish primary legislation), E (Ei general), H (villkorade avtal) in Sources

Revenue cap and TOTEX reform

RP4/RP5, capital valuation, lösningsneutralitet, the CAPEX bias problem

Core pages: Ei, RP5 Revenue Cap Methodology (2028–2031), Natural Monopoly, Distribution System Operator, Anslutningsavgift, Elnätsavgift — What Determines Your Bill

Synthesis: Anslutningsavgift 2027 — What Changes for DSOs and Customers — practical consequences of EIFS 2026:10 for DSOs and customers

Sources: cluster F (revenue cap / intäktsramar) in Sources

DNDP and grid planning

What DSOs must plan for, how they quantify it, individual DSO plans, methodology

Core pages: Distribution Network Development Plan, Flexibility Need Assessment, DSO Flexibility Need Calculation Methods, Congestion Management, Grid Capacity Utilization, Capacity Maps, N-1 Criterion, Anvisningssystem, Distribution System Operator, Swedish DSO Landscape, NordSyd

DSO plans: Swedish DNDP First Round — DSO Profiles (2025-2034) — E.ON, Vattenfall, Ellevio, GENAB profiles + Skåne regional synthesis

Declared vs. delivered: Declared vs. Delivered — How Much DNDP Flexibility Need Becomes Procured Flexibility — how much DNDP-declared need became prequalified capacity and activated energy, per DSO and nationally, and why the gap is mostly structural

Regional collaboration: Skånes Effektkommission — SE4 supply adequacy; NUP harmonisation; DSO flex need methodology guide; NET; Anslut i Skåne

International comparison: Portuguese DNDP — PDIRD-E 2024 — Portugal’s PDIRD-E as the EU reference case for DNDP flexibility quantification; probabilistic analysis and cost-benefit comparison of flexibility vs. reinforcement

Sources: cluster G (DNDP and grid planning) in Sources

Local flexibility markets

How DSO procurement markets work, Swedish market landscape, platform mechanics, what’s been delivered

Core pages: Flexibility Market, Effekthandel Väst, SWITCH, NODES, Flexia Consulting, CoordiNet, Aggregation, CheckWatt, Flower, Fever Energy, Virtual Power Plant, Baseline Methods, Submetering, Dynamic Line Rating

Small DSO case study: Kinnekulle Energi — Götene Flex; 54.5→135 MW capacity gap; small DSO automation trajectory; first public data May 2026

Synthesis: Swedish Flexibility Market Landscape — case study of Swedish LFMs: history, current operational status, supply-side dynamics, near-term pipeline · European Local Flexibility Market Landscape — EU-wide case study: operational-market count, TSO-DSO coordination models, international product design, participation barriers · Declared vs. Delivered — How Much DNDP Flexibility Need Becomes Procured Flexibility — market outcomes set against the flexibility need DSOs declared in their DNDPs

Sources: cluster I (local flexibility markets) in Sources

Villkorade avtal and conditional connections

Rules, DSO implementations, the technology stack, relation to markets

Core pages: Anslutningsplikt, Villkorade Avtal, Flexible Connection Agreements, Data Centres and Grid Flexibility, Power Tariffs and Home Batteries, OpenADR, Flexibility Communication Protocols

Synthesis: Coordinating Market-Based and Rules-Based Flexibility under NC DR — FCA↔LFM coordination under NC DR Art. 31; five design fixes for compatibility

DSO profiles: E.ON Energidistribution, Vattenfall Eldistribution, Ellevio, Göteborg Energi Nät

Sources: cluster H (villkorade avtal) in Sources

Balancing markets and TSO operations

FCR/aFRR/mFRR, BSP/BRP agreements, Nordic Balancing Model, reserve requirements

Core pages: Balancing Markets, Swedish Balancing Market Prices and Volumes, Nordic Balancing Model, Svenska kraftnät, Svk Transmission Grid Planning, Transmission Network Charge, Strategisk Reserv, eSett, Transmission System Operator, Elmarknadsrådet, Long-Term Market Analysis, BSP and BRP Roles

Sources: cluster K (balancing markets and TSO operations) in Sources

Flexibility methodology and consumer behavior

Baseline methods, flex need quantification, consumer surveys, heat pump auctions, protocol stack

Core pages: Baseline Methods, Demand Response, Swedish Household Demand Response — Consumer Adoption and Barriers, Energy Storage, Aggregation, Flexibility Communication Protocols, The Signal Stack — Price Signal Collisions at the Customer DER, Flexibility, Load Forecasting

Sources: cluster J (flexibility methodology) in Sources

Wholesale market and interconnection

Day-ahead, intraday, bidding zones, capacity mechanisms, PPAs, cross-border capacity

Core pages: Nord Pool, Bidding Areas, Winter 2026-27 Supply Situation, EPAD Auctions, Flow-Based Capacity Calculation, Electric Power Transmission, Baltic Cable, Power Purchase Agreement, Electricity Export Restrictions, Merit-Order Price Suppression from Weather-Dependent Generation

Sources: cluster L (wholesale market) in Sources

Microgrid and island operation

Arholma, Simris, protection engineering, BESS in island mode, fault current

Core pages: Island Operation, Gotland Island Operation — Total Defence Planning, Unintentional Islanding and Anti-Islanding Protection, Vattenfall Eldistribution, E.ON Energidistribution, Energy Storage, Generator Connection Requirements, Grid-Forming Inverters

Sources: cluster M (microgrid and island operation) in Sources

Vehicle-to-Grid and V2X

Bidirectional EV charging as a grid resource — technology, Swedish regulatory barriers, pilots, grid risks

Core pages: Vehicle-to-Grid, Energy Storage, Ferroamp

Synthesis: V2G Grid Risks — DSO and TSO Hazards from Bidirectional EV Charging — five DSO/TSO risk categories with Swedish evidence; LV thresholds, islanding NDZ, relay coordination, cybersecurity, cold-load pickup; V2G Service Design — The Malakhatka Blueprint — nine-phase multi-actor service blueprint; pre-qualification dead zone; user-facing service design findings

Sources: cluster P (V2G and Vehicle-to-X) in Sources

Data infrastructure

Centralt datahanteringsverktyg (formerly elmarknadshubb): history, DHV+FIS design, NC DR data backbone, aggregator data access

Core pages: Digitalization and Smart Grid, Centralt Datahanteringsverktyg, Flexibility Communication Protocols, Network Code on Demand Response, Berättigad part, eSett

Synthesis: eSett’s Swedish Role Through NC DR Implementation (settlement backbone vs DHV; aggregation-compensation route)

Sources: clusters D (market operational standards — NEMHB), N (data infrastructure) in Sources

Business strategy and market analysis

Synthesis pages: strategic analysis, market design recommendations, competitive positioning

Flexibility market design:

• Why Swedish Local Flex Markets Are Thin — Structural Causes — root causes of low liquidity
• DSO Flexibility Valuation — Methods and Swedish Evidence — how DSOs value flexibility; CAPEX bias
• The Price-of-Flexibility Ladder — Why Capital Flows to FCR, Not Local Markets — normalizes DSO cost-avoidance benchmarks, local clearing prices, and national balancing prices to SEK/MW/year; why local flex loses even before the CAPEX-bias story starts
• LFM Standard Product Design — Model A vs B Recommendations for DSOs — product design recommendations
• The Flexibility Provider Base — Structure, Barriers, and the Aggregator Constraint — who provides flex and why the pool is thin
• STLF for Flexibility Markets — What Counts as Good and How to Achieve It — why good forecasting for flex ≠ low MAPE; the forecast as a settlement-defined financial instrument; data access and DMDs as the binding constraint

Regulatory implementation:

• NC DR Implementation in Sweden — What Changes and for Whom — actor-by-actor NC DR change map
• TSO-DSO Coordination — The Central Design Problem — the core design challenge for shared flexibility
• Small DSO Capacity — The Binding Constraint on Swedish Flexibility Policy — why ~162 small DSOs are the bottleneck
• Vattenfall vs E.ON — DSO Approaches to Flexibility — same regulation, opposite conclusions
• Swedish DSO Tariff Reform — Three Parallel Tracks (2025–2027) — TOTEX, effektavgift redesign, and förhandsprövning as a system; interactions and the 2026–2028 vacuum
• Elnätsavgift — What Determines Your Bill — the customer-facing counterpart: why the fee can’t be shopped around, why it’s outpaced inflation, and how to read a post-2027 bill
• Anslutningsavgift 2027 — What Changes for DSOs and Customers — EIFS 2026:10’s shallow-charge default vs. särskilda-skäl exception; consequences for DSOs (compliance rebuild, RP5 revenue mechanics) and customers (predictable small connections, costlier large/remote ones, lost microproduction exemption)
• Independent Aggregation in Sweden — The Implementation Gap — BSP paper construction, Model 3/4, DHV dependency; what is and is not operational in 2026
• DSO Connection Queue Reform — The Swedish Policy Response — faktisk belastning, Ei ställningstaganden, Svk anvisningssystem, Art. 6a/31.3; what Sweden is doing and what remains unresolved
• The Regulatory Architecture for Swedish Flexibility 2026–2028 — NC DR + FNA + DNDP + TOTEX + DHV/FIS as a system; dependency map; critical path; per-actor timeline 2026–2031

Grid technology and risks:

• V2G Grid Risks — DSO and TSO Hazards from Bidirectional EV Charging — LV overvoltage, unintentional islanding, relay degradation, cybersecurity, cold-load pickup
• Security and Resilience of the Digitalized Flexible Grid — cyber-physical attack surface; NIS2; concentration vs decentralization; price-signal synchronization; total-defence dimension

Capacity adequacy and balancing economics:

• The Swedish BESS Business Case — Revenue Stacking and the FCR Saturation Problem — battery revenue model; FCR saturation; pivot to mFRR/aFRR/arbitrage; duration shift
• Nordic Battery Revenue Trends 2023–2026 — Nordic battery revenue time series (SE, FI, DK1, DK2) 2023–2026; decline in Sweden/Finland, duration premium, methodology break
• Capacity Adequacy and Flexibility as the Missing Reserve — ERAA LOLE gap; energy-only + strategic reserve; the CONE-failure diagnosis; flexibility as named-but-undelivered mitigation; NRAA end-2026
• Strategisk Reserv — mechanism design (Lag 2025:50); first procurement failure and CONE paradox; second procurement 350 MW; Ei norm review autumn 2026