H2 vs Battery as Energy Storage/kg.

Elfi Wolfe shared this feedback 5 years ago
Submitted

Beta Test 2

Appears H2 has 1.12 Wh per 1 l.

Short answer.. for energy storage on own grid, Batteries have better Wh/kg of storage.

For external charging, Batteries take time, but you can fill the H2 tanks in seconds.

Something seems wrong with Small Grid large H2 tank.. But that is double the 1.188 size.


Large Grid:

H2 engine has 560 kWh of storage

H2 tank has 5.6 MWh of storage for .68 kWh/kg

Large Battery has 3 MWh of storage for .78 kWh/kg

Small Grid:

H2 engine has 17.92 kWh of storage

H2 tank has 179.2 kWh of storage for 0.056 kWh/kg (?what?)

Large Battery has 1 MWh of storage for .961 kWh/kg

Small Battery has 50 kWh of storage for .342 kWh/kg

Replies (3)

photo
1

Its sad that even after those updated values, the small grid tank is so horrendously mass inefficient. Its still 3161 kg.

To compare:

  • Large Grid H2 Tank: 8161 kg
  • Large Grid Large Cargo: 2593 kg
  • Small Grid Large Cargo: 626 kg

That does seem a bit off for me, even without considering that its now also power storage and thus needs to be competitive.

photo
1

Looks the same with this version of beta as well.

photo
1

Hydrogen and batteries have been fricked up for a long time. Small grid tanks are ridiculously heavy and battery cells have variable properties depending on what sized grid they're in. Maybe it's better with the last test version? I noticed large grid batteries require 80 cells now, but I've not done the math


Also hydrogen should have much higher energy density. I will just leave this link here....

https://en.wikipedia.org/wiki/Energy_density

Leave a Comment
 
Attach a file