> UAV compressed hydrogen tank systems with fuel cells in the 800-1600W range They didn't say how they would be using the hydrogen. I haven't been able to fin

> UAV compressed hydrogen tank systems with fuel cells in the 800-1600W range They didn't say how they would be using the hydrogen. I haven't been able to find it again, I did read about an article about a long endurance (days), high flying plane. It was powered by hydrogen. It burnt it. As I recall it was in an ICE, but at 50% efficiency using it as jet engine fuel isn't such a bad idea. It has an energy density of 120 MJ/kg, 3 times as much as normal fuels so it makes sense either way, if you can contain it. In other news, the country where I live (Australia, 6th largest exporter in 2019) is contemplating exporting hydrogen. Why? Because if renewable power continues on its current price trend it will be cheaper to produce hydrogen than it is to mine the natural gas we currently export. Again, I presume no fancy technology - it will be burnt just like the natural gas is.