What is in a grid connection offer?

The connection point, the agreed capacity, a one-off contribution and the cable cost, the grid fees with their capacity and energy price, the timeline and the conditions. The deep dive reads a composed offer line by line.

Explained in

Charging infrastructure · Deep diveThe grid connection offer, line by lineThe grid operator's offer for the hub's 1.2 MW medium-voltage connection, line by line: connection point, capacity, construction cost contribution, cable, grid fees, timeline and conditions, with the rules behind each line.

Three rules stand behind the commercial lines:

From “Where the numbers come from”, stop 10

Terms

  1. Grid feeWhat a grid operator charges for the use of its grid; it is part of the electricity price and, for larger connections, often also depends on the highest power drawn.
  1. How far apart are fast chargers on EU motorways?Along the TEN-T core network, AFIR requires a charging pool at least every 60 km in each direction: 400 kW by the end of 2025, 600 kW by the end of 2027.
  2. Why does a charging hub need its own transformer?A megawatt at 400 V needs about 1,700 A. At medium voltage the current is a fiftieth of that, so large hubs connect there with their own transformer.
  3. What does it take to build a charging hub?A site host, a grid connection, an energy supply contract, a building permit and backend and roaming partners. The grid connection is usually the slowest step.
  4. What is utilisation of a charger?The energy a charger delivers compared with what it could deliver at full power all year. Because most costs are fixed, it decides whether a site pays back.