(19 Aug 2021, 4:25 pm)streetdeckfan wrote Assuming they can get a supply of Hydrogen, I'd say it's probably better for most of their routes than going BEV. It offers better energy density, so in theory it can have a considerably longer range for the same weight. 
The 'recharge' time is also considerably faster than BEVs, almost as fast as diesel.

The downside of course is the efficiency, it 'costs' electricity to make hydrogen, and then to convert it back to electricity. I believe efficiency is somewhere around the 30% mark, but the increase in density more than outweighs that.
Plus, if the initial electricity for creating the hydrogen is from renewables such as solar, then it is still very clean.

Yes, supply is one problem. Though the Government are doing some work on the feasibility of transporting it via the existing pipeline networks: https://researchbriefings.files.parliame...N-0645.pdf

Having recently tried the Hydrogen deckers in Aberdeen, I have to say they are effortless, and I'd love to see operators seriously look at these as an alternative. But here's the second problem - they're supposedly £500,000 per bus, or at least according to Route One: https://www.route-one.net/news/aberdeen-...8-january/

As with electric buses, the shelf price is still not feasible compared to a standard Euro 6 diesel bus. Until the Government invest seriously into research and development of green vehicles, in order to reduce production costs and timescales, then you're just not going to get the investment. We cannot constantly have a situation whereby investment only comes with significant grants by the Government.