A staggering 500kW power output headlines Porsche’s fastest flagship four-door, the new Panamera Turbo S E-Hybrid set for public debut at the Geneva motor show in early March.

This is the first time the Stuttgart brand has unveiled a flagship model grade – beyond the single-spec 918 Spyder – that uses petrol-electric power … and the results are telling.

The Panamera Turbo’s 404kW/770Nm 4.0-litre twin-turbo V8 engine has been used, but now combines with an electric motor in the Panamera Turbo S E-Hybrid to deliver 500kW/850Nm, the latter available from “just above idle” according to its maker.

Porsche Panamera Turbo S E-Hybrid rear

Yet the Porsche can be plugged into your household powerpoint. To separate petrol engine from electric motor, they each in this application deliver 404kW and 100kW respectively.

A lithium-ion battery package is rated at 14.1kWh and can be fully recharged (drawing from a 10-amp outlet) in six hours, or 2.4 hours if an optional fast-charge facility is installed.

Porsche Panamera Turbo S E-Hybrid interior

A PDK eight-speed dual-clutch automatic transmission is standard, as is all-wheel drive, adaptive air suspension, carbon-ceramic brakes, torque vectoring and 21-inch alloy wheels.

When the Panamera Turbo S E-Hybrid arrives in Australia in the third quarter of 2017 it will command a hefty $83K premium over its Turbo sibling, with a towering pricetag of $460,100 (plus on-road costs) that’s even $4K higher than a 911 Turbo S.