I start by saying, I've always been against the bickering within clean energy, solar vs wind, lithium vs flow, electricity vs heat. When we all know the answer is all of these things. However, I think it's also important that we accept and focus on which technologies can have most impact, at least cost in the quickest time (time is not on our side to address climate change), in each use case.  It seems overwhelmingly that batteries are the answer for passenger transport, most scales. Hydrogen, and fuel cells certainly have a case on long-haul trucking and trains.  I am 'pro' hydrogen, and indeed have clients in the sector, we must though find the right applications. Increasing the amount of hydrogen in the gas-grid seems a very obvious solution which is being artificially (politically) held back. Just my thoughts, happy to hear yours.