Quality of Electricity Supply....

[buickanddeere]

https://www.hydrogen.energy.gov/pdfs/review19/st100_james_2019_o.pdf estimates if 30,000 T700 rated tanks were built the cost would be $30 per kg of capacity. A kg of H2 is roughly the equivalent of 1 gallon of gasoline.

T700 is 700 bar or about 10,000 PSI.

Storing H2 is hard.

Plus the hazards of H2 molecules being so small. The hydrogen creeps into and through the containment material . Metallurgy changes for one problem .

 

[Grumpycat]

Plus the hazards of H2 molecules being so small. The hydrogen creeps into and through the containment material . Metallurgy changes for one problem .

Yes, H2 makes most metals brittle. Most H2 tanks seem to be carbon fiber.

 

[3930dave]

Watching the Smithsonian Channel, about the CAN/USA border....... Those hydro-generation stations at Niagara Falls supply 1/4 of the electricity for Ontario and New York.

Better get those ones shut down fast !

Rgds, D.

 

[tjkubota93]

Hydro is good for frequency.

 

[3930dave]

One of the oldest sources of kinetic power.......

Snowy 2.: Australia's divisive plan for a vast underground 'battery' - BBC News

..... put to use to store NRG Down Under......

Rgds, D.