How many MW is a battery energy storage system?

For battery energy storage systems (BESS), the analysis was done for systems with rated power of 1, 10, and 100 megawatts (MW), with duration of 2, 4, 6, 8, and 10 hours. For PSH, 100 and 1,000 MW systems at 4- and 10-hour durations were considered. For CAES, in addition to these power and duration levels, 10,000 MW was also considered.

How much does a 4 hour battery system cost?

Figure ES-2 shows the overall capital cost for a 4-hour battery system based on those projections, with storage costs of $245/kWh, $326/kWh, and $403/kWh in 2030 and $159/kWh, $226/kWh, and $348/kWh in 2050.

What are battery cost projections for 4 hour lithium-ion systems?

Battery cost projections for 4-hour lithium-ion systems, with values normalized relative to 2022. The high, mid, and low cost projections developed in this work are shown as bolded lines. Figure ES-2.

What is included in a 5% discount for a 100 mw system?

a 5% discount was included for a 100 MW system, also including PCS, C&C, and grid integration cost estimates obtained from the lithium-ion reference literature.

How much storage does a 100 mw cavern use?

(a) For this study, we are using a maximum of 10 hours of storage. Hence, for a 100 MW system, the cavern size happens to be 1,000 MWh. Hunter et al. (In Press) uses 120 hours of storage, and, therefore, they use 12,000 MWh. The use of 1,000 MWh is necessary for us to do a comparison across technologies for the same 10-hour duration.

How much does energy storage cost in a cavern?

Therefore, efforts to reduce cost of storage via engineering design are expected to gain traction. As long-duration energy storage (diurnal and seasonal) becomes more relevant, it is important to quantify cost for incremental storage in the cavern. The incremental cost for CAES storage is estimated to be $0.12/kWh.