Elon Musk has performed a sudden U-turn on bitcoin over concerns about its energy usage, and says his electric car firm Tesla will no longer accept the cryptocurrency as payment – but will his decision have an impact, and could Tesla turn to an alternative currency?Tesla bet big on bitcoin earlier this year with a $1.5 billion investment, and it paid off: Bloomberg estimates that the company made $1 billion on its purchase in the first quarter of 2021.At the time, Musk was criticised for investing in the cryptocurrency, with…
