What is it about?

Targeted control only in exceptional situations

In an emergency, the distribution system operator may temporarily limit the output of individual installations.

BKW uses emergency control when this is necessary for safe grid operation – in particular to comply with voltage limits and to avoid local power interruptions. The measure is limited to exceptional cases and is used in a targeted, minimally invasive manner and only for as long as necessary.

Affected plants

Which installations need to be prepared?

Different technical requirements apply depending on the system type, capacity and key date.

The relevant date is the date on which the technical connection application (TAG) was submitted. The technical connection conditions applicable on the date the TAG was received apply.

Energy generation plantsPV and EEA systemsPower generation plants with an installed total capacity of more than 30 kW must be equipped with the necessary provisions for emergency control. Special requirements apply to plants from 300 kW.View technical requirementsCharging stationsCharging infrastructure over 3.7 kWCharging stations with a total installed capacity of more than 3.7 kW are affected. Downstream of the same connection point, the system owner can determine how a control command is distributed to individual charging stations.Download Q&AHeat pumpsHeat pumps over 3.7 kWHeat pumps with a total installed capacity of more than 3.7 kW must comply with the requirements. For systems over 300 kW, the connection is assessed on a case-by-case basis.View TAB from 2026Battery storageStorage depending on output and operating modeBattery storage systems are affected if they reach the power limits and are able to feed electricity into the grid. Storage systems from 300 kW are affected if they are able to feed electricity into the grid and/or draw electricity from the grid.View TAB from 2026

Depending on the installation, the connection to the emergency control system is made via a telecontrol connection to the central control centre of BKW or via a relay installed in the electricity meter. The grid connection customer is responsible for implementation downstream of the switching device – i.e. “behind the meter”.

Frequently asked questions

Questions about emergency control

Answers on TAG, responsibility, control commands and special cases.

Downloads

Technical documentation for emergency control

All relevant documents from the old site for planning, implementation and ordering.

Q&A Emergency control (PDF, 304 kB)

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Technical requirements for emergency control (PDF, 746 kB)

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Fact sheet: Connection of energy generation systems ≥ 500 kW (PDF, 310 kB)

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Requirements for the remote-control connection of power generation systems ≥ 500 kW (PDF, 915 kB)

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Order form for remote control component for power generation systems (PDF, 256 kB)

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Technical requirements for emergency control: EEA, LMS & BESS ≥ 300 kW from 1 November 2026 (PDF, 841 kB)

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Technical requirements for emergency control: EEA & BESS (>30–299 kW), LMS & HP (>3.7–299 kW) from 1 November 2026 (PDF, 782 kB)

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