LG Energy Solution is expanding cylindrical battery-cell production at its plant in Nanjing, China, and a South Korean media report says the extra output is earmarked for Tesla's growing orders. It is a supply-chain move, but the signal underneath it is about demand: the world's best-selling EV, the Model Y, is selling well enough to push an established battery line to full capacity.
What is being added
According to a report from South Korean outlet The Elec, LG Energy Solution plans to activate two newly installed cylindrical battery lines at its Nanjing Plant 9 during the second half of 2026. Each line carries an annual capacity of roughly 2 GWh, adding around 4 GWh of new output between them, with the potential to scale into the double-digit GWh range over time.
| Detail | Figure |
|---|---|
| New lines (Plant 9) | 2 |
| Capacity per line | ~2 GWh/year |
| Combined new output | ~4 GWh/year |
| Current supply to Tesla | ~30 GWh/year |
| LG cylindrical capacity (total) | ~50 GWh/year |
Plant 9 was physically completed some years ago but is only now coming online for the first time. It was modelled on LG's Plant 6, which houses the company's most advanced manufacturing processes, so the new lines should carry forward LG's latest cell-making techniques rather than older ones.
Why it is happening
The driver is straightforward: Model Y demand. Reporting on the expansion frames it as a direct response to Tesla orders outstripping current output, with LG's existing Nanjing lines already running near capacity. LG currently supplies an estimated 30 GWh of cylindrical cells a year to Tesla out of roughly 50 GWh of total cylindrical capacity, and the Nanjing plant primarily feeds Tesla's Gigafactory in Shanghai.
What it means — and what it does not
For European owners, the direct impact is limited: these Nanjing cells flow to Tesla's Shanghai factory, while European Model Y cars are built at Gigafactory Berlin using different cell supply. The more useful takeaway is the demand signal. A supplier does not bring dormant lines online to chase orders that are not there, so the expansion reads as evidence that Model Y volume remains robust globally even as Tesla's sales picture varies by region.
One clarification is worth making, because the two are easily confused. This Nanjing expansion is separate from the roughly $4.3 billion LFP battery agreement LG Energy Solution and Tesla struck for US production earlier in 2026. That deal covers lithium-iron-phosphate cells for the American market; the Nanjing news is about cylindrical cells for China. Both point the same way — more LG capacity earmarked for Tesla — but they are different chemistries in different regions.
As always with reporting sourced to a single outlet and not confirmed by either company, treat the exact figures as provisional until Tesla or LG comments directly.