German carmakers hope a network of high-power charging stations they are rolling out with Ford will set an industry standard for plugs and protocols that will give them an edge over rival makers of electric vehicles.

At the moment, Tesla and carmakers in Japan and Germany use different plugs and communication protocols to link batteries to chargers, but firms building the charging networks needed for electric vehicles to become mainstream say the number of plug formats will need to be limited to keep costs down.

Carmakers behind the winning technology will benefit from having an established supply chain and an extensive network, making their vehicles potentially more attractive to customers worried about embarking upon longer journeys, analysts say.