New charging hardware invites one obvious question, whether it is fast enough. Tesla has answered that twice on its own site, with two different numbers. Ask instead which of them reaches a truck.
Tesla opened Semi Charging for Business ordering in Germany, the Netherlands, Belgium, France and the UK on 14 September. The Megacharger sold there is listed at up to 1.2 MW. On Tesla's British Semi page the same Megacharger is listed at up to 800 kW, and both promise the identical result, up to 60% of range in 30 minutes.
Tesla's specification table reconciles them. One Megacharger cabinet delivers "up to 1200 kW, shared by 2 posts", and the minimum order is two posts. So 1.2 MW is what a cabinet gives a pair of trucks, which works out to 600 kW each, 75% of the 800 kW a Semi accepts.
Whether that bites follows from Tesla's figures. Europe's Semi is quoted at 550 km and 1.0 kWh/km, so 60% of range in half an hour needs 660 kW on average. Half an hour at 600 kW returns 300 km, roughly 55%, leaving each truck 30 km short of the number both advertise. Buy the minimum and the extra megawatt is a berth for a second truck, not a quicker stop for the first. Chargers and trucks are both dated 2027.
Semi Charging for Business — 14 September 2026
Specifications, the two-post minimum and the 2027 dates come from Tesla's British and German Semi and Semi Charging for Business pages, read on 15 September, where Tesla labels power, range and 60% figures estimates. The 660 kW average, 600 kW per shared post and 300 km are ours.
