Applying for a Construction Power Connection: Process, Cost and Lead Time
No power, no progress on site. Anyone who wants to apply for a construction power connection must file the request with the local grid operator, involve a registered electrical contractor and allow for a lead time. This guide explains the process step by step, which costs arise – and how to bridge the wait for the fixed connection off-grid and emission-free.
What is a construction power connection?
A construction power connection is the temporary electricity supply of a building site via the public grid. It powers tools, lighting, cranes, site containers and drying equipment before the final building connection goes live. At its core is a standards-compliant construction distribution board with a meter, residual-current devices (RCD) and the required CEE sockets – designed to the applicable German electrical standards (DIN VDE 0100-704) and the DGUV guidance on construction distribution boards.
Applying for a construction power connection – step by step
- Identify the responsible grid operator. Not the energy supplier but the local distribution system operator (DSO) is responsible for the connection. It is assigned by postcode or site location.
- Involve a registered electrical contractor. The application is filed through a contractor listed in the grid operator's installer register. Only registered firms may register the connection and wire up the board.
- State load and location. Required connected load (kW/amperes), site location, site plan and the intended period are entered in the application.
- Provide the distribution board. The board is bought or rented and must meet the applicable standards. Often the electrical contractor handles procurement and inspection.
- Set the meter and switch on. After inspection, the grid operator installs the meter and energises the connection. In parallel, you sign a supply contract for the construction power.
Construction power cost – the components
The cost of construction power is made up of one-off and ongoing items. The exact amount depends on the grid operator, connected load and location.
| Item | Type | Depends on |
|---|---|---|
| Connection/construction cost | one-off | distance to grid, civil works |
| Distribution board rental | ongoing/flat | size, features, rental period |
| Meter rental & base price | ongoing | grid operator, contract |
| Energy price (ct/kWh) | consumption-based | supplier, consumption |
Rule of thumb: the further the site lies from the nearest connection point and the more civil works are required, the higher the one-off cost. For remote sites a fixed connection can become uneconomical – here a mobile solution is often the cheaper choice.
Construction power lead time – what to expect
Lead time is the most frequently underestimated factor. Depending on the grid operator, its workload and any grid works needed, the lead time ranges from a few weeks to several months. Site plans, permits and civil works extend the process further.
Bridging the lead time – off-grid and emission-free
Between the start of construction and an active grid connection there is often a gap. Traditionally it is closed with a diesel generator – with exhaust fumes, noise, fuel storage and problems in low-emission zones. A mobile battery power station like the GM 3600 instead delivers 230 V immediately, with no permit and no emissions:
- Available immediately: unpack, switch on, work – no lead time, no application.
- Emission-free & quiet: suitable for interiors, night-time sites and low-emission zones where diesel is not allowed.
- Strong enough: 3,600 W continuous, 200 % overload (7,200 W) and a pure sine wave for tools with high inrush current.
- Also for remote sites: where a fixed connection is uneconomical, the box replaces the generator permanently.
Frequently asked questions (FAQ)
Who applies for the construction power connection?
The application is filed through an electrical contractor listed in the installer register of the responsible grid operator. The contractor submits the paperwork, registers the load and provides the standards-compliant distribution board.
How long until site power is available?
Depending on the grid operator, location and civil works needed, from a few weeks to several months. Applying early reduces the risk that the site is ready but has no power yet.
What does construction power cost consist of?
One-off connection/construction costs, rental of the distribution board and meter, plus ongoing base price and energy price (ct/kWh). The amount depends on the grid operator, connected load and location.
How do I bridge the time without a grid connection?
For the start of construction or remote sites, a mobile battery power station like the GM 3600 delivers 230 V immediately – emission-free, quiet and without a permit. It bridges the lead time and replaces the diesel generator until the fixed connection is live.
Further reading: Mobile power supply for the construction site · Battery generator vs. diesel · Product page & measured data GM 3600 · Construction Power overview.
Information on process, cost and lead time is general orientation and does not replace a binding statement from the responsible grid operator; rules and prices vary regionally. Performance/runtime figures for the GM 3600 are reference values (depending on load and conditions), as of 07/2026, net plus VAT, subject to change.