search

JGCRI / gcam-core

GCAM -- The Global Change Analysis Model
http://jgcri.github.io/gcam-doc/
Other
263 stars 159 forks source link

Electricity for NG SMR H2 #405

Closed Youyi77 closed 3 months ago

Youyi77 commented 3 months ago

Hi team,

I am wondering why the electricity needed for NG SMR H2 is higher in 2040 compared with 2015, considering efficiency improvement.

I tried to trace back to the H2A models, but it seems that NREL only has "current" version for 2015 but no future version for 2040 for SMR H2 production on the website.

image

The screenshot is from H2A_IO_coef_data.csv in the energy folder.

patrickrorourke commented 3 months ago

Thanks for your question!

These values were taken from H2A's v3.2018 files, and I believe the specific file for gas SMR without CCS was titled "future-central-natural-gas-without-co2-sequestration-v3-2018.xlsm".

I did also check the H2A website [https://www.nrel.gov/hydrogen/h2a-production-archive.html] and it appears the website has removed both the "current" and "future" files for gas SMR without CCS v3.2018.

I'm not sure why the input requirement for electricity increased from the "current" to "future" assumptions, but perhaps slightly more electricity is required for the more efficient use of the main energy/feedstock (gas) for the "future" technology.

Youyi77 commented 3 months ago

Hi Patrick! Got it, thanks so much for the clarification!!

pkyle commented 3 months ago

Also just FYI (keeping the issue closed), the hydrogen assumptions in GCAM 6 and 7 are documented here: https://jgcri.github.io/gcam-doc/cmp/359-Hydrogen_and_transportation.pdf

Youyi77 commented 3 months ago

Many thanks, Page! This is very helpful.