Ranked by what binds now
Four Bottlenecks Bind Today; Four Former Ones Are in Surplus
Each input is rated by what it is doing to deployments now, not by how concentrated it is. Concentration and shortage are different problems: China refines 94% of battery-grade graphite, but graphite is not short.
| Bottleneck | State, 2026 | Evidence | Where it bites |
|---|---|---|---|
| Power transformers and electrical steel (GOES) | Binding | 128-week US lead times; 30% US shortfall in 2025; about six GOES makers | Grid, charging depots, data centers, gigafactories |
| Rare earth magnets (NdFeB, dysprosium, terbium) | Binding | China export licenses from April 2025; magnet exports down 77% by May | EVs, robots, drones, wind turbines |
| Strain-wave reducers and actuator modules | Binding | Japan-led reducers; Chinese modules at a 60-80% cost lead | Humanoids, industrial robots |
| Grid interconnection and new generation | Binding | Large loads wait years for utility service | Charging depots, data centers, factories |
| Switchgear | Tight | 44-week US lead times | Every site with a medium-voltage feed |
| Mature-node control and analog chips | Tight | 18-24 months to requalify a replacement part | Every vehicle, charger, inverter and robot |
| Copper | Tight | China refines 47%; new mines take a decade or more | Motors, transformers, cables, busbars |
| Battery-grade graphite | Concentrated, not short | China refines 94%; export permits required since December 2023 | EVs, grid batteries, robots |
| Cathode active material | Concentrated, not short | China makes about 85% | EVs, grid batteries |
| SiC wafers | Surplus | Chinese wafers cut prices by two-thirds; Wolfspeed through Chapter 11 | EV inverters, chargers, solar, grid batteries |
| Lithium chemicals | Surplus | Prices down more than 80% since 2023; China refines 74% | Every lithium-ion cell |
| Battery cells | Surplus | Global capacity about 3x demand | EVs, grid batteries, robots |
| Polysilicon, wafers and solar cells | Surplus | Capacity about 3x 2026 installations; China holds 80%+ of each stage | Solar |
| Tactile sensor arrays | Not yet made at scale | No supplier at production scale | Humanoid hands |
Overbuilt
Overbuilding Turned the Battery and Solar Bottlenecks Into Surpluses
In 2022, cells, lithium, polysilicon and SiC were the headline shortages. By 2025 each had more capacity than demand, most of it built in China.
Cell capacity passed 3 TWh, about three times demand. Polysilicon capacity reached about 2,034 GW against 638 GW of 2026 installations. Lithium prices fell more than 80% after an eightfold rise, and Chinese SiC wafers sold for a third of the old price. Surplus did not end concentration: China still controls most of each stage, and it has used export permits on graphite since December 2023. See the Battery and Solar PV supply chains.
Binding
What Binds Takes Years to Build and Nobody Overbuilt
Transformers, rare earth magnets and precision reducers have long lead times, specialized know-how and few producers, and none of them got the capacity race batteries did.
- Transformers: grain-oriented electrical steel comes from about six makers, and US power transformer lead times averaged 128 weeks in 2025, with imports supplying about 80%. See Charging and Depot.
- Magnets: China's April 2025 export licenses cut its magnet exports 77% in two months and stopped Ford's Explorer line in Chicago for a week. See Motor and Drivetrain.
- Reducers: strain-wave reducers come mainly from Harmonic Drive Systems and Nabtesco; a humanoid needs one in most of its 28 or more joints. See Robot.
Recycling
Recycling Relieves Metals, Not Steel, Wafers or Chips
Recycling adds supply only where the constrained input is a recoverable material that can be refined back to specification.
| Bottleneck | Recycling leverage | Why |
|---|---|---|
| Lithium, nickel, cobalt | High | Black mass refines back to battery-grade salts |
| Copper | High | Already one of the most recycled metals |
| Rare earth magnets | Medium | Magnet-to-magnet recycling works but volumes are small |
| Graphite | Medium | Recoverable, harder to return to anode grade |
| Electrical steel, SiC wafers, control chips | Low | Process-limited or qualification-limited, not material-limited |
Sources
Sources and scope
- Dataset
- Electrification bottlenecks rated by state in 2026
- States
- Binding: deployments are waiting on it now. Tight: long lead times without stopping work. Concentrated, not short: one country dominates but supply is ample. Surplus: capacity well above demand
- Sources
- Figures cited on each linked chain page: IEA, Wood Mackenzie, Adamas Intelligence, TrendForce, Intertek CEA