Tesla loses latest battle with Ecotricity

Advertising watchdog dismisses complaint from US electric car maker about UK company's green energy claims

Tesla, the US electric car and battery maker, has lost the latest round of a long-running spat with UK energy company Ecotricity.

The company, owned by billionaire Elon Musk, had lodged a complaint with the UK's Advertising Standards Authority (ASA) about claims on Ecotricity's website that it supplies "Britain's greenest energy" and "greenest electricity". On Wednesday, the ASA dismissed the complaint - agreeing with Ecotricity that the claims are correct.