Source - E.ON Guide villkorade avtal (2025)
Source: E.ON Energidistribution, “Information om villkorade avtal — För företag som ska ta ställning till ett villkorat avtal”, version 2025-03-10. PDF in raw/.
Summary
A practical guide from E.ON Energidistribution explaining Villkorade Avtal (conditional connection agreements) to prospective business customers. The document describes what the agreements entail, the operational flow when congestion occurs, technical requirements for the customer, the connection process, and costs.
Key points
What it is
A villkorat avtal splits a customer’s connection capacity into two parts:
- Garanterad överföringskapacitet (guaranteed transfer capacity) — always available
- Styrbar effekt (controllable power) — must be curtailed within 15 minutes when the DSO sends a control signal due to grid congestion
Example given: 3 MW total connection, of which 1 MW guaranteed and 2 MW controllable.
Why it exists
Grid capacity is dimensioned for annual peak demand (typically cold winter days or high-production/low-load summer periods). Most of the year there is unused capacity. Villkorade avtal let customers connect faster by using this spare capacity, accepting curtailment during the rare congestion periods instead of waiting years for grid reinforcement.
Relationship to flexibility markets
The document explicitly describes a priority ordering:
- If a local Flexibility Market exists in the area, it is used first to resolve congestion
- Villkorade avtal are activated only if the market doesn’t fully resolve the shortage
- Disconnection (bortkoppling) is the last resort if the customer fails to comply
Operational timeline
| Phase | Timeframe | Action |
|---|---|---|
| Connection | Long-term | Customer connects with villkorat avtal; flexibility market potential assessed |
| Operational planning | D-7 to D-d | Forecast shows congestion risk; DSO posts need on flexibility market |
| Day-ahead | D-1 | Flexibility procured on market; villkorade customers warned |
| Intraday | D | Additional flexibility procured |
| Real-time | H | Villkorade avtal activated if needed; customer must curtail within 15 min |
| Settlement | D+1 | Validation of curtailments; payment to flexibility providers |
Technical requirements
Customers need IT and metering integration:
- Metering: dual-core current transformers, Modbus interface, real-time power readings (min 1/minute), forwarded to E.ON within 3 minutes
- Communication: web API or IEC 60870-5-104 integration via E.ON’s SWITCH platform
- OpenADR 3.0.x: for automated handling of curtailment signals with acknowledgement
Steerable resources mentioned: EV charging infrastructure, heat pumps, batteries, ventilation systems, industrial processes.
Costs
- Grid tariff is the same as a standard connection (no penalty tariff)
- Additional costs: external IT integration, potentially grid protection equipment for larger connections
- Revenue opportunity: participation in local flexibility markets for compensation
- Penalties: overuse/overfeed charges and fines if customer fails to curtail when instructed
Connection process (6 steps)
- Connection indication — E.ON assesses feasibility
- Grid/flexibility study — capacity study, villkorat avtal terms defined
- Optional pre-study — technical deep dive
- Engineering — technical specifications
- Procurement — customer sets up integration team
- Build & integration — physical build + platform integration in parallel