Matthias Surovcik
Your commissioning programme has reached a decisive point. The installation team reports completion, testing is scheduled, and the client expects first energisation today. The switching operation itself may take only minutes. The decision that makes it permissible should have been prepared for much longer.
Energisation changes the condition of the installation and the risks around it. It can affect people who are not present at the switch. A technically competent person may be able to operate the device, but that competence alone does not answer who is authorised to release the system for energisation. In this article we will talk about the general principles of authorization, the even higher standards of medium- and high-voltage-switching need even further attention.
Energisation Is a Controlled Change of State
First energisation, temporary construction power and entry into normal operation are different states. Each requires a clear purpose, defined boundaries and conditions for release. The project should know which systems will become live, what remains under construction and which protective measures depend on the new state.
The change must also reach the people affected by it. A cable that was treated as dead yesterday may become live today. An adjacent contractor may still be working under an earlier assumption. Access restrictions, signs, permits and coordination must reflect the actual condition.
An Energisation Decision should therefore consider technical readiness and organisational readiness. Completion of installation is only one input. Inspection status, protection settings, outstanding defects, access control, emergency arrangements and communication also matter.
Separate Technical Authority from the Physical Switching Task
Several functions can be involved in one energisation. A project or client function may approve the programme milestone. A competent function may confirm that the technical release criteria are met. The person controlling the installation may authorise the switching. A suitably qualified and authorised person may perform the physical operation.
These functions can be held by one person in a small organisation, but they should not be confused. Ability to operate a circuit breaker does not automatically include authority to decide that an entire system is ready. Conversely, a senior manager can approve the commercial milestone without being competent to perform or technically direct the switching.
VDE 0105-100 provides the framework for responsibility for the installation, responsibility for work and safe operating procedures. The project should assign the relevant functions to named people for the defined scope. A VEFK / CRES may form part of the wider electrical governance structure, but the title alone does not make that person the automatic switching authority for every installation.
Establish the Conditions for Release
Release criteria should be agreed before the planned energisation date. They may include completed inspection and test records, approved protection settings, closed safety critical defects, correct identification, controlled access and confirmation that work areas are clear.
Known deviations require a conscious decision. The record should explain the technical consequence, compensating measures, permitted operating state and approval authority. A vague statement that the remaining items are minor is not sufficient when their effect has not been evaluated.
Communication must be practical. The switching team needs an approved instruction or programme where the complexity requires it. Affected contractors need timely notice. Emergency contacts and abort criteria must be clear. If any release condition changes during the operation, the responsible person must be able to stop and reassess.
Time pressure must not become an informal release criterion. If a test result is missing or a work area cannot be confirmed clear, the programme needs an escalation decision rather than an optimistic assumption. Clear criteria allow the project to distinguish a genuine blocker from an administrative delay and to act accordingly.
Document the Decision and the New Operating State
The documentation should show what was energised, when, under whose control and on which evidence. The switching record should capture the required sequence and final state. Any temporary configuration or restriction should remain visible to the people who will control subsequent work.
After energisation, the installation must be handed into a defined state. Keys, access permissions, permits and isolation procedures should now follow the organisation controlling the live system. The change should be communicated to every affected party, not only the people who witnessed the switching.
Where later work requires de energisation, the route back to a safe working state must be equally clear. Energisation control is not a one time ceremony. It establishes the basis for every subsequent isolation, test and intervention on the live system.
The result is an energisation that supports the programme rather than creating uncertainty behind it. The central question is not simply who presses the button. It is whether the organisation has made and recorded a competent decision about the new state. The Electrical Safety Plan should establish this process before commissioning depends on it.
Frequently Asked Questions
Who is authorised to energise an electrical installation during commissioning in Germany?
The project must define a competent technical authority that decides whether the installation is ready and a suitably authorised person who performs or directs the switching. These functions can be combined where the organisation, competence and scope make this appropriate, but they should not be confused. A project milestone approval or client request does not replace the technical release decision. Authority must follow the installation boundaries and current operating state.
Is an electrician automatically allowed to perform first energisation?
No. Technical competence as an electrician does not automatically provide authority to energise a particular system. The person must understand the installation, switching task, hazards, procedure and project conditions, and must hold the required authorisation within the responsible organisation. First energisation also depends on a release decision based on inspection, protection, access control and communication. Ability to operate a device is only one part of the decision.
What must be checked before first energisation?
The release criteria should cover technical and organisational readiness. Typical checks include inspection and test status, protection settings, circuit identification, system boundaries, closed safety critical defects, access control, cleared work areas, approved switching instructions and communication with affected parties. Known deviations need documented consequences and compensating measures. The exact checklist must reflect the installation and intended energised state.
How should temporary energisation be controlled?
Temporary energisation should have a defined purpose, boundary, duration and responsible control function. The project must communicate the changed state, restrict access, identify temporary configurations, manage remaining work and define how the system returns to a safe condition. Temporary does not mean informal. The decision and switching sequence require evidence comparable to the risk created by the energised condition.
Which records should be created for an energisation decision?
The records should identify what was energised, when, for which purpose, under whose control and on what evidence. They may include the technical release, switching programme, inspection status, deviation approvals, notifications and final switching state. Any temporary limitation should remain visible after the event. Good documentation allows later teams to understand the actual condition without relying on the memory of those present.
Discuss Your Project
Describe the commissioning sequence, technical authority and release evidence required before energisation. Discuss your project with TCS.
