Battery Storage
Lithium-ion pack prices fell to $112 per kWh in 2024 — a 90% decline since 2010. Global grid-scale battery storage capacity passed 200 GWh in 2025, with China and California leading deployment. Lithium iron phosphate (LFP) has overtaken nickel-based cathodes for new builds because of cost, safety and cycle life advantages.
Key insights
Price decline has resumed
Lithium-ion pack prices fell from $1,460/kWh (2010) to $139/kWh (2023). A brief pause in 2022 caused by lithium and nickel spikes reversed in 2023–24 as commodity prices normalized and LFP scaled. BNEF's outlook puts pack prices at $80/kWh by 2030, the threshold at which mid-size EVs reach unsubsidised price parity with ICE vehicles in most markets.
LFP wins on cost, NMC keeps energy-density edge
Lithium iron phosphate (LFP) uses no nickel or cobalt, offers longer cycle life (3,000+ cycles), and is ~30% cheaper than nickel-manganese-cobalt (NMC). NMC retains a 20–30% energy density advantage, which matters in premium long-range EVs and aerospace. Tesla, BYD and most Chinese OEMs have moved standard-range EV models to LFP.
China dominates the value chain
China produces 75% of global cells, processes 70% of lithium and 80% of cathode active material. CATL and BYD together hold roughly half of global battery manufacturing capacity. US IRA and EU Critical Raw Materials Act seek to reshore parts of the chain but timelines are 5–10 years. Sodium-ion batteries — emerging from CATL, BYD and HiNa — could displace LFP in stationary storage where energy density is less important.
Lithium-ion pack prices 2010–2026
Volume-weighted average, USD per kWh
Key Finding: Prices fell by an order of magnitude in 13 years. The 2022 uptick from commodity stress reversed quickly.
Grid-scale battery storage — annual additions
GWh installed per year
Key Finding: Annual deployment more than doubled in 2024 vs 2023, led by China, California and Texas.
Methodology & caveats
Cell vs pack vs system
Cells are the basic unit; packs combine cells with cooling, BMS and structural housing; battery energy storage systems (BESS) add inverters and balance-of-system. Cell prices are roughly 70% of pack prices and pack prices roughly 60% of fully installed system prices. Always check which the headline number is.
LFP vs NMC trade-offs
LFP (LiFePO₄): 150–170 Wh/kg, 3,000+ cycles, thermally stable, no cobalt. NMC (LiNi_xMn_yCo_zO₂, e.g. NMC811): 220–270 Wh/kg, 1,500–2,000 cycles, contains nickel and cobalt with supply-chain and ESG concerns. LFP is the dominant chemistry for stationary storage and entry-level EVs; NMC retains premium-EV and high-power applications.
Capacity factor for storage
Battery storage 'capacity' is rated in MW (power) and MWh (energy). A 1 MW / 4 MWh system can discharge 1 MW for 4 hours. Duration is the key variable for grid use — 2-hour systems handle peaker replacement, 4-hour systems handle daily solar shifting, 8+ hour systems are needed for multi-day events but remain expensive without alternative chemistries.