Porsche has reportedly filed a patent application which shows a 911 plug-in hybrid.

Porsche has reportedly filed a patent application which shows a 911 plug-in hybrid.

Details are limited but the pictures shows a 911 connected to a large battery charger. That's not much to go on but previous reports have indicated that the company is developing a high-performance hybrid based on the 911 Turbo S. The model is slated to feature technology from the 918 Spyder and have a combined maximum output of approximately 725-730 bhp (540-544 kW).

It remains unclear if this picture shows the rumored high-performance hybrid or something more innocuous but the model is expected to be launched by 2017.

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Porsche 911 plug-in hybrid revealed in a patent photo?