Hydrogen's big difficulties need to be explained and accounted for if we are to believe in a 'hydrogen economy'

SIZE MATTERS: Toshiba's Hydrogen Energy Research Field in Fukushima, just up the coast from the nuclear power station crippled in the 2011 tsunami. Described in 2020 as the world's biggest green hydrogen plant, its maximum output is about 900 tonnes of hydrogen a year. The next step is to 'scale up' the technology. Brazil's Unigel says it is building a plant to produce 10,000 tonnes a year. Picture: Toshiba

ANOTHER day, another swathe of hydrogen announcements.

Here's the first three headlines that came up when I googled "hydrogen news" on Friday.