Sineng Electric's 50 MW/100 MWh sodium-ion battery energy storage system (BESS) project in China's Hubei province is the first phase of a larger plan that will eventually reach 100 MW/200 MWh. The initial capacity has already been connected to the grid and can power around 12,000 households for an entire day.
Wikipedia has a decent (albeit somewhat outdated?) comparison with other battery types.
Seems like sodium-ion batteries are somewhat cheaper, require more space and have lower usable cycles.
Probably also just aa important to note that sodium is much more readily available than lithium and doesn’t require geopolitical wars or slave-labor to acquire.
Agreed, that is an important point. That being said, it was raised in the article, a more “technical” comparison wasn’t provided.
What’s interesting to me is the power to weight ratio. Sodium-Ion is at ~1000 W/Kg vs Li-Ion at ~175-425 W/Kg. EVs could maybe have less weight and cost in the future because of this.