Time also had an article on green steel in Sweden, which focuses on SSAB, but also mentions H2 Green Steel.  See 

People should be aware of the sentence, "For one thing, green steel costs about 25% more to make than its conventional counterpart, according to RMI, a climate think tank."  A carbon tax or some other kind of market adjustment, or a change in demand among the customers, will be necessary for the green steel to sell well in the market.

A bit more: I believe Time is basing its statement on the Rocky Mountain Institute article, "The Disruptive Potential of Green Steel", by Thomas Koch Blank of the Rocky Mountain Institute, posted in 2019. This is accessible at https://rmi.org/wp-content/uploads/2019/09/green-steel-insight-brief.pdf. There is more current detail at the (somewhat cutely named) https://rmi.org/insight/steel-yourself/.