Citi: Global Battery Supply Chain Enters New Downcycle, but Supply-Demand Dynamics Better Than Previous Round
nashnova research
Citi's October 7 report says the global battery chain is entering its second downcycle, yet restrained material expansion and the absence of price overshoot make the supply-demand picture markedly better than 2022-2024 — a destructive price war is unlikely to repeat.
Demand growth is slowing — but does "slower" mean "smaller"?
Citi raised its global battery demand forecast: +46% YoY in 2025, ~39% in 2026, reaching roughly 2,927 GWh — both above prior bullish estimates.
This means → the industry is still expanding fast; the pace just dropped from "doubling" to "up ~40%."
Looking to 2027-2028, China's EV penetration nears a 60% ceiling while energy storage enters a high-base phase; growth should ease to ~26% and ~20%.
In plain terms = the pie is still growing quickly — it's just growing quickly at a slower rate.
Why has energy storage become the core demand engine?
Citi projects global energy-storage (ESS) battery demand at 1,030 / 1,390 / 1,700 GWh for 2026-2028, with growth of 66%, 35%, and 22%.
By 2030, global ESS demand should reach ~2,210 GWh, implying a 2025-2030 CAGR of ~29%.
This means → storage is taking the baton from EVs as the single largest incremental source of battery demand.
Supply is catching up — so why aren't material makers expanding aggressively?
Global battery capacity will hit ~5,266 GWh by end-2026, up ~45% YoY; China alone accounts for ~4,400 GWh.
Yet material-stage expansion — cathode, anode, separator — is notably conservative. Three reasons: years of thin margins; existing capacity still has room to ramp; and the painful 2022-2024 downcycle made the industry more disciplined.
Citi estimates that 2027 effective utilization for LFP cathode, anode, and separator will hold near ~70%, keeping material supply roughly in balance.
In plain terms = burned by the last price war, material makers would rather under-build than bleed again.
What makes this cycle fundamentally different from the last one?
Citi flags three structural differences: battery and lithium prices never overshot, so end-demand is on firmer ground; material expansion is restrained, keeping utilization stable; and Chinese policy has begun curbing excess capacity.
The numbers: 2021 demand grew over 100%; this cycle's peak is ~46% — yet 2025 net demand addition is ~635 GWh, far above 2021's ~210 GWh.
This reflects an industry that has moved from "wild expansion" to "large volume, controlled pace" — bigger absolute numbers, smaller swings.
LFP technology is plateauing — what does that mean for competition?
Citi notes that over the past five years, China's LFP cell-level energy density has seen almost no improvement and is approaching its physical ceiling.
The R&D focus has shifted to fast charging and all-weather performance; the quality gap between tier-1 and tier-2 cell makers is narrowing.
CATL's China market share (excluding BYD) has slipped from 66% in 2022 to 59% in H1 2026; Citi expects the slide to continue.
This means → as products converge, customers can switch suppliers more easily — the window for tier-2 battery makers to win accounts has opened.
China's storage installations dipped then rebounded — and what is happening in Europe?
China's H1 2026 new energy-storage installations fell ~18% YoY, mainly because Document 136 (Feb 2025) removed mandatory storage-pairing requirements; but July-August volumes already rebounded.
Citi forecasts full-year 2026 China installations at ~219.4 GWh (+15.8% YoY), supported by multiple provinces rolling out capacity-price compensation mechanisms.
In Europe, storage capacity is set to grow from ~45 GW in 2025 to ~180 GW by 2030; utility-scale project IRRs reach the mid-teens, with some exceeding 20%.
Citi expects Chinese battery makers' European capacity share to rise from ~10% to ~60% by 2028 — in plain terms = Chinese batteries are moving from bit player to lead actor in Europe.
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