Hello from Editor Z. The most revealing number in American battery manufacturing this fall isn't a sales figure — it's a utilization rate. More than 700 GWh of cell capacity is under construction or commissioning in the United States, stacked on top of roughly 200 GWh that was already online as of 2024, and BloombergNEF's scenario for 2026 has those lines running below 70% of what they can physically produce. The country has sunk $48.3 billion into EV battery plants through mid-2025, with 62,700 jobs attached, and it has run short of EVs to put the cells into. The industry's answer hasn't been to mothball the buildings — it's been to change what comes out of them. Ultium's Spring Hill, Tennessee plant paused EV cell production in January 2026, then spent roughly $70 million retooling for LFP cells aimed at grid-scale storage and data centers, with output targeted for the second quarter. The gigafactory boom isn't collapsing. It's being redirected — and the cells that were supposed to make your next EV cheaper are going into someone's substation instead.
The Capacity Gap, in Numbers
700 GWh Built for a Market That Shrank Mid-Construction
The mismatch is not subtle. Roughly 200 GWh of US cell capacity was online in 2024; more than 700 GWh is in the construction-and-commissioning pipeline behind it. That pipeline was committed when the federal $7,500 consumer EV credit was still law. The credit ended September 30, 2025, following the One Big Beautiful Bill Act signed July 4, 2025, which means the demand curve the factories were sized against was legislated out of existence while concrete was still curing. North America's share of actual global EV battery deployment in 2025 was about 10%, while US grid-scale storage took roughly a third of the country's total battery deployment that year. The factories were built for the wrong one of those two numbers.
What "Below 70%" Looks Like on the Floor
Utilization is an abstraction until you count badges. BlueOval SK's Kentucky operation went fully cold on February 14, 2026, with 1,512 layoffs and the joint venture dissolved in the first quarter — $5.8 billion of capex with nothing coming off the line. Ultium's Lordstown, Ohio plant paused in January 2026 with 1,334 hourly layoffs, and the recall date slipped from June to August 2026. Panasonic's De Soto, Kansas plant was supposed to reach full production by March 2027; it is now ramping toward roughly 50% of capacity, with two of eight planned lines running, two more starting, and the first lines in its second wing pushed to 2027. Further upstream, Ford and LG terminated a 75 GWh European cell supply contract worth 9.6 trillion won — about $6.5 billion — in December 2025. These are not delays. They are capacity being written down.
The Cancellations Came First
Before the retooling wave there was an outright cull. US EV and battery manufacturers canceled more projects in the first quarter of 2025 than in the prior two years combined, and nearly half of the $30 billion in clean-tech factories due online in 2025 were projected to slip or die. Fortescue Zero scrapped a $210 million Detroit battery plant — announced in January 2024, expected to create up to 600 jobs — citing current US policy settings and the elimination of critical tax credits. KORE Power halted its $1.25 billion Buckeye, Arizona plant despite conditional approval for an $850 million federal loan, retrofitting an existing building instead. AESC paused construction in Florence County, South Carolina in June 2025, and Michigan terminated Gotion's Big Rapids project.
The Retool: Spring Hill Is the Template
$70 Million and 700 Jobs Back
Spring Hill matters because of how cheap the conversion was. Ultium Cells — the GM and LG Energy Solution joint venture — paused EV cell production there in January 2026, invested about $70 million to switch the plant to lithium-iron-phosphate cells for grid-scale projects and data centers, and recalled all 700 previously furloughed workers for a second-quarter 2026 start. Set that $70 million against BlueOval SK's $5.8 billion in stranded Kentucky capex and the logic writes itself: changing a line's end market costs about 1% of what building the line cost. GM and LG are also consolidating NCMA GEN1 EV cell production at Warren, Ohio, which is the other half of the same move — concentrate the EV chemistry that still has buyers, convert the surplus.
LG's 20% Reallocation, and Everyone Else Following
This is not one plant's improvisation. LG Energy Solution has been reallocating roughly 20% of its gigafactory lines from EV chemistries to ESS chemistries and is standing up its first large-scale US LFP plant for stationary storage. SK On is pivoting toward stationary storage. Samsung SDI begins ESS production in 2026 at Kokomo, Indiana. Across the sector, more than 50 GWh of capacity was reallocated toward LFP in 2025 alone. LG Energy Solution North America president Bob Lee framed it plainly: the rapid growth in energy storage is helping balance out softer EV demand. The company is targeting more than 60 GWh of global ESS battery production this year, with North American capacity accounting for over 80% of that global output.
The Awkward Counterexample
For honesty's sake: storage is not a guaranteed landing pad. LG Energy Solution's own 17 GWh Arizona LFP pouch plant for energy storage — the second phase of a $5.5 billion Queen Creek complex — was paused rather than rushed, the company saying it was adjusting the pace of investment flexibly to market conditions. The cylindrical side of that site kept moving, on schedule for 46 mm large round cells in the first half of 2026. So the pivot isn't "storage absorbs everything," it's "storage absorbs what can be converted inside buildings that already exist." Greenfield ESS faces the same financing caution as everything else: CEA counted 21 GWh of US storage factory cancellations in 2025.
EV Cell Line vs. ESS Cell Line: Why the Switch Pencils Out
Here is the same physical building evaluated two ways. If you read nothing else, read this.
| Factor | EV cell line (as built) | ESS / grid cell line (after retool) |
|---|---|---|
| Typical chemistry | NCMA / high-nickel pouch or prismatic | LFP (lithium iron phosphate) |
| Buyer | Automakers selling to consumers | Utilities, grid-scale developers, data centers |
| Demand signal in 2025–26 | ~10% of global EV battery deployment in North America; US consumer credit ended Sept. 30, 2025 | ~one-third of total US battery deployment in 2025; LGES targeting 60+ GWh ESS globally |
| Section 45X credit | $35/kWh per cell, $10/kWh per module | $35/kWh per cell, $10/kWh per module — same credit |
| Cost to stand up or convert | Billions (BlueOval SK Kentucky: $5.8B capex) | ~$70 million (Ultium Spring Hill retool) |
| Jobs outcome, Spring Hill | 700 workers furloughed, Jan. 2026 | All 700 recalled, Q2 2026 production target |
| Risk | Demand set by consumer incentives and gas prices | Demand set by utility and data-center buildouts; greenfield ESS still being paused (LGES Arizona 17 GWh) |
The Policy Math Behind the Pivot
45X Pays the Same for Both Cells
The quiet engine here is Section 45X, the advanced manufacturing production credit, as amended by the OBBBA. It pays $35 per kWh for a cell produced and sold and $10 per kWh for a module — and it does not care whether that cell ends up in a crossover or a shipping container on a utility site. That single fact is why conversion beats idling. A paused line earns nothing; a converted line earns the same per-kWh subsidy it was always going to earn, just from a different customer. Meanwhile the consumer-side credit that drove EV demand is gone, so the policy stack now subsidizes making cells far more reliably than it subsidizes buying cars built around them.
Two Clocks Are Running Down
Both constraints push toward building now, for whoever will buy. The foreign-entity domestic content threshold sits at 60% for 2026 and ratchets five percentage points a year to 85% by 2030. And 45X itself phases down to 75% of value in 2030, 50% in 2031, 25% in 2032, and zero after December 31, 2032. A plant that sits cold through 2027 and 2028 is burning years off a credit with a hard expiration date. That is the real reason the Spring Hill playbook is spreading faster than any demand forecast would justify.
What This Actually Means If You're Shopping for an EV
The Cheap LFP Is Real — It's Just Pointed Elsewhere First
The cells being made at Spring Hill are exactly the chemistry that was supposed to bring down entry-level EV prices: LFP, cheaper per kWh than high-nickel, durable, ideal for a commuter pack. The first large US volumes of it are now contracted to grid projects and data centers. For a buyer, that means the price-drop timeline most of us penciled in for 2026–2027 is deferred rather than canceled — the manufacturing learning curve on domestic LFP is still being climbed, just by a different customer paying the bill. Expect domestic-LFP EVs to arrive, and expect them to arrive later than the factory announcements implied.
Where Not to Panic
Plenty of EV-facing capacity is genuinely running. Toyota's Liberty, North Carolina plant — $13.9 billion, 14 production lines, a 5,100-person workforce plan — began battery shipments in June 2025 and is building for hybrids, plug-in hybrids, and EVs. Ford's BlueOval Battery Park Michigan in Marshall had more than 500 employees assembling LFP prismatic cells as of June 2026, targeting 1,700 jobs, and is explicitly built for both vehicles and residential energy storage — hedged by design. In Canada, NextStar Energy in Windsor, Ontario started production in November 2025, held its grand opening March 5, 2026, has produced more than a million cells and employs over 1,300 people. The practical read for buyers: supply risk is concentrated in specific nameplates tied to specific paused plants, not in EV availability broadly.
Read Nameplate Numbers Skeptically
One habit worth borrowing from the capacity trackers: nameplate capacity is a design maximum, not output. Operating capacity means shipment evidence exists. Committed capacity means money and a construction start. Announced capacity means a press release. When a plant promises to supply the model you're waiting on, only that first tier should move your decision.
What's Still Unknown
Three things would change this story. First, whether grid and data-center demand holds long enough to absorb converted lines — 21 GWh of US storage factory cancellations in 2025 says that market has its own soft spots. Second, whether EV demand returns fast enough that automakers regret converting; Spring Hill's retool was about $70 million, so the reverse trip presumably isn't ruinous, but no one has run it yet. Third, whether the 45X phase-down starting in 2030 pulls investment forward into a crunch and then drops it off a cliff. Nobody involved is pretending to know.
The useful way to watch this through 2027 is to stop tracking announcements and start tracking end markets. Every time a plant says it is "repurposing," ask who the customer is now — that answer tells you whether domestic cells are getting cheaper for cars or for substations. For now, the honest summary is that America's battery industry is doing fine and America's EV battery industry is doing something else.
-EditorZ
Photo by Homa Appliances on Unsplash
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