I am curious to know if the methane from coal mines could be used to produce Turquoise Hydrogen?

 The amount exhausted to the atmosphere even by mines with sealed goaf areas, vacuum collection systems and power generation is still a significant waste of energy. Perhaps some R&D in this area would be useful?

Loved the article and the idea. I have long believed that a hydrogen economy is the way forward, storing chemical energy in hydrogen just makes s lot of sense as do hydrogen fuel cells for EVs 

The notion of using the excess generating capacity of non sustainable power stations to create and subsequently store hydrogen from the electrolysis of water is elegant, as we transition to a purely sustainable energy future, whatever that looks like. It would be interesting to see the economics of batteries vs fuel cells, but my gut feeling is that current battery technology is resource intensive, and potentially an environmental burden if not fully recycled. 
We need to be storing every Joule of energy produced as efficiently as possible and harvesting it from every source, whilst relentlessly striving to make that source completely sustainable, until one day the silver bullet of fusion energy arrives  

Thank you for the thought provoking article  

Hi @geoff - thanks for your kind comments, glad the post was of interest. On your issue of battery sustainability, you might be interested in this post too! 

https://ideaspies.com/posts/accelerating-the-use-of-sustainable-batteries-in-transport

best

K