Jenny ChaseRE: https://mastodon.green/@solar_chase/115405274671180986
Small victories: BNEF has changed its definition of long-duration storage to this! Thank you BNEF's LDES queen Yiyi Zhou.
Sometimes you can be annoying enough to be the change you want to see in the world. In a small, pedantic but nonetheless clarifying way.
(What do you mean organisations that aren't BNEF have not yet adopted this definition? Also I should care about those why?)
Owen Mehegan@solar_chase as a layperson I have read this several times and I'm still not sure what it means. I know I'm not really the audience, but can you give an example of what is and isn't LDES when using this metric?
@literatesavant where you have a tank or reservoir of some kind of storage medium (water for pumped hydro, molten salt for some types of thermal storage, compressed air for CAES, stuff held high up for gravity storage, flow batteries, metal air batteries because they have a reaction medium).
Ie, you can add more of the storage medium without scaling up the whole thing. You can sort of do this with lithium ion, but not as well as for most of these options.
@literatesavant I should add, the storage medium has to be relatively cheap. Lithium ion cells, for example, don't really count as they are already a massive part of system capex.