What Porsche actually built
The news was buried in a press release about new colours and greater convenience for the Cayenne Electric, which tells you something about how Porsche sees it: a comfort feature, not a headline. The system pairs a base plate under the car with a ground pad installed in the customer's parking space. Porsche describes the ground pad as weatherproof for outdoor installation, so it does not have to live in a garage, and charging starts automatically once the car is parked over it.
The safety engineering is the part families should read twice. Motion sensors and foreign object detection are designed to interrupt charging if a living creature comes close to the vehicle or the pad, or if a metal object lying on the pad starts to heat up. In plain language: the system is built to notice your child, your dog — or the metal scooter your eight-year-old abandoned on the driveway. Porsche's own announcement confirms the system stops automatically in those cases.
The maths: what 90% efficiency costs at home
Ninety percent sounds fine until you convert it into electricity you pay for. Let's assume a home tariff of €0.25 per kWh, a family doing 15,000 km a year in a large electric SUV that uses 20 kWh/100 km, and therefore 3,000 kWh delivered into the battery over twelve months.
Through a cabled AC wallbox at around 94% efficiency, that pulls 3,191 kWh from the grid, with losses of 191 kWh — about €48 a year. Through the inductive pad at 90%, you draw 3,333 kWh, losing 333 kWh — roughly €83 a year. The wireless premium is therefore about 142 kWh, or €36 a year.
That is not a scandal; it is roughly the price of one tank of fuel in the old days, spread across a year. It does mean the pad is a comfort purchase, not a saving — and it sits alongside the much smaller losses we looked at in our piece on why inverter efficiency changes cost a driver only about €2.90 a year. If you want to run your own numbers, our charging cost calculator will do it with your tariff and your mileage.
A family checklist before you get excited
1. You still have to park
Wireless means no cable, not no effort. The car has to sit over the pad. In a fixed, familiar driveway that becomes second nature within a week. In a shared garage, on a slope, or where you reverse in from a narrow street, it can be fiddlier than plugging in.
2. Winter is the honest test
A weatherproof pad is not a self-clearing pad. Packed snow, ice and grit between the two coils is exactly the kind of obstacle you do not get with a cable. Plan to keep the pad clear — that is the winter chore the brochure will not mention.
3. Eleven kilowatts is overnight, not road-trip
At 11 kW you add roughly 11 kWh per hour into the battery, so an eight-hour night gives you around 88 kWh — for a large SUV at 20 kWh/100 km, somewhere near 440 km. Excellent for the school run and the weekly shop; useless for a 700-km holiday drive. For that you still want the cable or a fast charger, and our database of the cheapest charging locations is the place to plan the stops.
Does your parking spot even qualify?
This is the question that decides everything. You need a dedicated space, a power feed to it, and ideally a three-phase 400 V / 16 A supply to get the full 11 kW — the same electrical preparation a wallbox needs. Renters, street parkers and many apartment dwellers are out before the conversation starts.
For context on what charging hardware costs when someone else builds it, our report on EZO's €150 million raise for 3,000 UK and Ireland charge points works out at about €50,000 per public point. A private pad is cheap by that yardstick, but you pay for it, its installation and the groundwork yourself.
What to do next
If you are ordering a Cayenne Electric in Germany, Austria, the Czech Republic or elsewhere in the staged rollout, ask your dealer three specific things: whether the pad can be supplied and installed at your exact address, what the pad itself adds to the invoice, and what preparation the ground needs. Porsche has not published a standalone pad price in every market, so get it in writing. Then call an electrician about your supply and who digs the trench.
Our honest verdict: this is the first series-production inductive charging system from a major European brand, and that matters for where charging is heading. But it is a convenience feature on a six-figure SUV, worth a few dozen euros a year in extra losses and a lot more in hardware — and for most families, a good wallbox in a dry garage will do the same job for less. Watch the rollout: if cheaper cars pick this up, the trade-off starts to look very different.
How much range do you gain overnight on an 11 kW wireless pad?
Roughly 11 kWh per hour reaches the battery, so an eight-hour overnight window adds about 88 kWh. In a large electric SUV using 20 kWh/100 km, that is around 440 km of driving — more than most families cover in several days.
Is inductive charging harder on the battery than a cable?
No. It is still AC charging at the same power level, so the battery does not care how the electricity arrived. The difference is purely efficiency: about 10% of the energy is lost in the transfer, compared with roughly 5–6% through a cable and wallbox.
Can it charge through rain, snow or ice?
Porsche says the ground pad is weatherproof for outdoor installation, and the safety systems stop charging if something interferes with the field. Practically, keep the pad clear of packed snow, ice and debris — a buried pad is not coupling to anything.
