7 ms·
Grid attached storage is growing and is also a good use of used cells repurposed from EVs (vs. direct recycling and recovery of metals) when their capacity is d
by s0rce 3y ago
Grid attached storage is growing and is also a good use of used cells repurposed from EVs (vs. direct recycling and recovery of metals) when their capacity is degraded beyond usefulness for mobile applications they remain valuable for stationary use.
Report for CAISO is here: https://www.caiso.com/Documents/2022-Special-Report-on-Battery-Storage-Jul-7-2023.pdf https://www.caiso.com/Documents/2022-Special-Report-on-Batte...
Looks like capacity has grown to >16 GWhr last year.
- s1artibartfast 3y agoWhere do you see 16gwh? I am always confused by how CA reports energy storage in GW, not GWH. The number I see most often is 6GW for California storage capacity.
- s0rce 3y agoRight side of Figure 2.2.1
- s1artibartfast 3y agoI still don't understand why GW would be capacity, and GWh is duration. I would think capacity would be gigawatt-hours, and max delivery rate would be gigawatts
- s0rce 3y agoFrom a grid operator perspective its capacity https://www.energy.gov/ne/articles/what-generation-capacity https://www.energy.gov/ne/articles/what-generation-capacity Capacity = Maximum Power Output Capacity is the amount of electricity a generator can produce when it’s running at full blast. This maximum amount of power is typically measured in megawatts (MW) or kilowatts and helps utilities project just how big of an electricity load a generator can handle.
- s1artibartfast 3y agoThanks, that makes a lot more sense then storage capacity. What's the rationale for calling actual energy storage capacity duration?
- s0rce 3y agoduration is how long the storage will last which is related to the energy storage which you could call capacity but they already used that word so I guess duration makes sense... I'm not a grid operator though