Which countries are leading the green hydrogen race?

I have no idea how much energy 1200 "kilotonnes" is.

Assuming 100% efficient electrolyser (70% is common today) 39 kWh = 1kg of hydrogen. 1200 kilotonnes is around 46,800,000 kWh.

A Tesla 3 has a capacity of 60kWh. China's hydrogen capacity could power some 15,000 hydrogen cars, once per week.