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Green hydrogen is developing now, and is very real, and is based on polysilicon solar advancements and PEM electrolyzer advancements, both of which provide ~3 d

Green hydrogen is developing now, and is very real, and is based on polysilicon solar advancements and PEM electrolyzer advancements, both of which provide ~3 decadal cost-down paths. See these two companies of ours: [1] https://ohmium.com https://ohmium.com [2] https://novohydrogen.com https://novohydrogen.com

Pxtl 3y ago
At present, the amount of green hydrogen in the total hydrogen economy is less than 1%. (edit: possibly less than 0.1% [1]) Green hydrogen is vapourware. [1]https://cleantechnica.com/2021/12/22/0-03-of-hydrogen-is-green-hydrogen/ https://cleantechnica.com/2021/12/22/0-03-of-hydrogen-is-gre...
- malchow 3y ago
  I don't think you know what the word "vaporware" means. 1 GW per day of new solar is being installed globally. Where do you think the excess mid-day production is going to go? It doesn't have to go anywhere, actually. But it will go somewhere.
  - Pxtl 3y ago
    99.9% of all hydrogen currently on the market is not "green". It is either captured by products from dirty industrial processes, or more commonly it is made from gas or coal and the CO2 is released into the atmosphere. If you're championing a tech that based on the one form of it that's basically a rounding-error in the overall prevalence? Yes, that's vapourware.
    - malchow 3y ago
      No, that isn't what vaporware means. Vaporware means a technology promised, but not delivered. What it doesn't mean is a technology promised, and successfully delivered, and at the beginning of its growth curve as supply of the enabling products ramp. By your definition, solar was vaporware in 2001 because less than 1 gigawatt per year was built. But it wasn't. It was simply early in its lifecycle. Today, 1 gigawatt of solar is installed in the world every day. Next year China will likely reach 1 TW of annual solar production capacity. This is perhaps why software people shouldn't throw around the word "vaporware" –- a useful software-industry term –– in hardware-based industries with well developed and well understood generational patterns.
lbourdages 3y ago
Suspiciously missing are efficiency numbers. How many "joules of hydrogen" do you get from one joule of electricity? We already know electric cars are on the order of 80% efficiency overall.
- malchow 3y ago
  Without telling you anything groundbreaking, around 80% for PEM. It's more than acceptable when you look at how much excess solar production is being built.

Pxtl 3y ago

At present, the amount of green hydrogen in the total hydrogen economy is less than 1%. (edit: possibly less than 0.1% [1]) Green hydrogen is vapourware. [1]https://cleantechnica.com/2021/12/22/0-03-of-hydrogen-is-green-hydrogen/ https://cleantechnica.com/2021/12/22/0-03-of-hydrogen-is-gre...

malchow 3y ago
I don't think you know what the word "vaporware" means. 1 GW per day of new solar is being installed globally. Where do you think the excess mid-day production is going to go? It doesn't have to go anywhere, actually. But it will go somewhere.
- Pxtl 3y ago
  99.9% of all hydrogen currently on the market is not "green". It is either captured by products from dirty industrial processes, or more commonly it is made from gas or coal and the CO2 is released into the atmosphere. If you're championing a tech that based on the one form of it that's basically a rounding-error in the overall prevalence? Yes, that's vapourware.
  - malchow 3y ago
    No, that isn't what vaporware means. Vaporware means a technology promised, but not delivered. What it doesn't mean is a technology promised, and successfully delivered, and at the beginning of its growth curve as supply of the enabling products ramp. By your definition, solar was vaporware in 2001 because less than 1 gigawatt per year was built. But it wasn't. It was simply early in its lifecycle. Today, 1 gigawatt of solar is installed in the world every day. Next year China will likely reach 1 TW of annual solar production capacity. This is perhaps why software people shouldn't throw around the word "vaporware" –- a useful software-industry term –– in hardware-based industries with well developed and well understood generational patterns.

lbourdages 3y ago

Suspiciously missing are efficiency numbers. How many "joules of hydrogen" do you get from one joule of electricity? We already know electric cars are on the order of 80% efficiency overall.

malchow 3y ago
Without telling you anything groundbreaking, around 80% for PEM. It's more than acceptable when you look at how much excess solar production is being built.