4 ms·
> which will be an order of magnitude cheaper than lithium ion Maybe. But take a lot of these cost claims with a giant pinch of salt: TCOE/TCOS at scale is wha
by davedx 2y ago
> which will be an order of magnitude cheaper than lithium ion
Maybe. But take a lot of these cost claims with a giant pinch of salt: TCOE/TCOS at scale is what matters and we won’t have any real idea what that will be while most of these battery chemistries are still pre commercialization.
That being said the cambrian explosion is very encouraging. Just good to temper optimism sometimes.
Source: I talk to grid battery developers for my business
- pfdietz 2y agoThe issue with iron-air batteries is their lower charging/discharge current. So they focus on a different storage niche: week-scale storage. Storage at different timescales can coexist and work together on a grid, since the mismatch of supply and demand, when viewed as its Fourier transform, has components at multiple different timescales.
- donny2018 2y agoAnother issue is round trip efficiency. Iron-air, I believe, is somewhere at 50-60% (you lose almost half of the energy that you pump in). While LFP and the Sodium battery mentioned in the title, is 95-97%.
- pfdietz 2y agoTrue, although for a battery system with a given economic lifespan, the "cost of inefficiency" is inversely proportional to the average storage time. So, it's 7x less important for weekly vs. daily storage.
- mulmen 2y ago> Just good to temper optimism sometimes. Sure. But is it really? Like in what way is it good? I see a lot more “tempering” than I do breathless optimism. Is any serious person in a position to do something meaningful with the batteries falling prey to hype that needs to be tempered?
- ForOldHack 2y ago"take a lot of these cost claims with a giant pinch of salt" That was funny.