4 ms·

I think you underestimate how much green hydrogen is going to cost. Yes, it would be great if green hydrogen is going to be as cheap as petrol today. No need to

by phicoh 5y ago

I think you underestimate how much green hydrogen is going to cost. Yes, it would be great if green hydrogen is going to be as cheap as petrol today. No need to worry. However, that is just very unlikely. Just basic physics how much energy you need to put in. Solar panels are cheap. Batteries are cheap if you can use them every day. Indeed not everybody has a drive way. Weeks on end sounds very dramatic. But the important number is what fraction of the year. Combining solar and means that a very large fraction of the year there will be green electricity. If you need to produce large amounts of green hydrogen, then you need to massively overbuild green electricity production. And this increases the fraction of time that there is green electricity. With respect to islands of BEV. That is a bigger risk for FCEV. It is very unlikely that a BEV island would have a hydrogen infrastructure. On the other hand, in an area dominated by hydrogen, it is still cheap to provide a few fastchargers. Maybe the elctricity won't be cheap but the charger setup is not that expensive, so you can expect them on major highways. Which will make FCEV the car for commutes. In any case, I'm curious which country will actual role out a fine grained network for green hydrogen. I very much like to know what green hydrogen will cost 'at the pump' if there are no subsidies.

Hypx_ 5y ago
Green hydrogen will be cheaper than petrol. The goal is to make it from curtailed renewable energy which will cost <$0.02/kWh. You can't go around talking about cheap solar and not realize it means cheap hydrogen too. It will be a significant fraction of the year that will be powered by hydrogen as the primary energy source. Just creating more green electricity will mostly end up wasting it as there is no other way of capturing and storing it. All regions must have hydrogen available. For things like industry, shipping, trucking, grid energy storage, etc., it is basically unavoidable for a country to not hydrogen. BEV islands will be small and not an alternative to widespread deployment of hydrogen-related infrastructure. But the reverse is not true, as it is fully possible for a country to reach zero emissions with no BEVs. The biggest change in environmental policy is the widespread deployment of hydrogen and related technologies. Many countries now like the UK, Germany, Australia, Japan, etc., have very significant hydrogen expansion policies. These policies will accelerate rapidly going forward.

by phicoh 5y ago

Hypx_ 5y ago

Green hydrogen will be cheaper than petrol. The goal is to make it from curtailed renewable energy which will cost <$0.02/kWh. You can't go around talking about cheap solar and not realize it means cheap hydrogen too. It will be a significant fraction of the year that will be powered by hydrogen as the primary energy source. Just creating more green electricity will mostly end up wasting it as there is no other way of capturing and storing it. All regions must have hydrogen available. For things like industry, shipping, trucking, grid energy storage, etc., it is basically unavoidable for a country to not hydrogen. BEV islands will be small and not an alternative to widespread deployment of hydrogen-related infrastructure. But the reverse is not true, as it is fully possible for a country to reach zero emissions with no BEVs. The biggest change in environmental policy is the widespread deployment of hydrogen and related technologies. Many countries now like the UK, Germany, Australia, Japan, etc., have very significant hydrogen expansion policies. These policies will accelerate rapidly going forward.