- At the 2026 World Manufacturing Convention in Hefei, Gotion raised the energy-density target for its sulfide-based Jinshi solid-state cells from 350 to 400 Wh/kg.
- The company also set a long-term cost goal of roughly one yuan per watt-hour — about US$150/kWh — which would be a first for solid-state manufacturing.
- Gotion’s cells have been road-tested in vehicles and survived puncture and high-temperature safety tests without smoke or fire, according to the company.
Solid-state batteries have been the industry’s “five years away” technology for the better part of a decade. So when a major cell manufacturer puts a concrete number on both performance and price, it deserves a closer look — even if the timeline remains long.
That is what happened at the 2026 World Manufacturing Convention in Hefei, where Gotion High-Tech — China’s fifth-largest battery maker and Volkswagen’s largest single shareholder’s cell partner — laid out updated targets for its solid-state battery program. The sulfide-based Jinshi (金石, “Gold Rock”, also translated as “Gemstone”) cells are now aimed at more than 400 Wh/kg energy density in mass production, up from the 350 Wh/kg the company had previously specified.
The more striking announcement was financial. Gotion says its solid-state cells will eventually enter what it calls the “one-yuan era”: roughly one yuan per watt-hour, or about US$150/kWh. For a technology synonymous with luxury pricing, that would be a genuine milestone.
Doubling LFP, at double the price
To put the numbers in context: mainstream lithium iron phosphate (LFP) cells in China currently deliver roughly 160–200 Wh/kg at the cell level. Gotion’s 400 Wh/kg target would roughly double that, while the US$150/kWh cost target is about double today’s average LFP prices. In other words, as Notebookcheck’s analysis put it, the cells would offer about twice the energy density at twice the price — a premium but commercially coherent product, suitable for premium and performance EVs where range and weight matter more than price per kilowatt-hour.
Replacing the flammable liquid electrolyte of conventional lithium-ion cells with a solid material is the core of the solid-state promise: higher energy density and a fundamentally safer cell. Gotion backed up the safety claim with what it described as extreme testing scenarios, including puncture and high-temperature evaluations, in which the new cells produced neither smoke nor flames. Independent verification of those tests would strengthen the claim — the company has not yet published detailed third-party test data — but the direction matches the chemistry’s theoretical advantages.
From lab bench to pilot line
What separates this announcement from the usual solid-state vaporware is the industrialization trail behind it. Gotion commissioned a 0.2 GWh pilot production line for all-solid-state cells in 2025; cells from that line, at the 350 Wh/kg generation, were integrated into vehicles and tested on public roads. In March 2026, the company finalized the design of a 2 GWh solid-state battery production line, a tenfold capacity step toward the next development stage. Earlier, in early 2026, Gotion signed a cooperation agreement with BASF on high-performance solid-state battery materials — a signal that the company is working on the materials supply chain, historically one of solid-state’s trickiest bottlenecks.
The timeline Gotion laid out in 2024 still stands: small-scale solid-state production beginning in 2027, with mass production targeted around 2030. The 400 Wh/kg benchmark and the US$150/kWh cost figure are long-term targets, and it remains unclear when they would be achieved in near-series production cells.
A race that’s getting crowded
Gotion is not running alone. BYD’s executive vice president Stella Li said in September 2026 that the automaker will put solid-state cells in roughly 1,000 demonstration vehicles in 2027 — a premium fleet for real-world data collection, with mass production not expected until around 2030.
Gotion is not running alone. BYD’s executive vice president Stella Li said in September 2026 that the automaker will put solid-state cells in roughly 1,000 demonstration vehicles in 2027 — a premium fleet for real-world data collection, with mass production not expected until around 2030. Taiwan’s ProLogium, meanwhile, signed a joint testing agreement with Mercedes-Benz in late September 2026 covering its Gen4 lithium-ceramic cells, building on a partnership that has run for nearly a decade.
The pattern across these announcements is instructive: sulfide-based cells from Gotion, BYD, and Samsung SDI on one side; ceramic and oxide approaches from ProLogium and others on the other. Each has different strengths — sulfides process more easily but are moisture-sensitive; oxides are more stable but harder to manufacture. No single chemistry has won, and the “mass production” claims that do exist still carry asterisks the size of small cars.
What to watch
For the Gotion story specifically, three things will determine whether the Hefei announcements age into milestones or slide into the long archive of overpromised solid-state claims. First, the 2 GWh line: finalizing a design is not commissioning a plant, and yields on sulfide solid-state cells have historically been brutal. Second, the cost curve: reaching US$150/kWh will require not just scale but vertical integration in materials — Gotion has discussed manufacturing its own lithium sulfide to get there. Third, cycle life and real-world degradation data, which no one in the solid-state race has yet published in full.
Gotion’s position in the industry gives the announcement extra weight. Founded in 2006 in Hefei, the company is China’s fifth-largest battery maker with 20 manufacturing bases worldwide, and Volkswagen is its largest shareholder. According to China EV DataTracker figures cited in industry coverage, Gotion installed 4.61 GWh of batteries in August 2026 alone — trailing second-tier peers like EVE Energy and CALB, but large enough that its solid-state program isn’t a side project. When a manufacturer at this scale locks in a 2 GWh line design and publishes cost targets, suppliers, automakers, and competitors recalibrate. The sulfide electrolyte route Gotion has chosen is one of the industry’s main bets: sulfides can be processed at relatively low temperatures and conduct lithium ions well, but they’re notoriously sensitive to moisture, which makes dry-room manufacturing — BYD’s chief scientist has flagged unscaled dry rooms as an industry bottleneck — a decisive variable in who actually reaches mass production first.
Still, the trajectory is real. Solid-state batteries are moving from press-release chemistry to pilot-line engineering, and price targets — not just energy density claims — are now part of the conversation. That shift, more than any single number, is the signal that this technology is finally being treated as a product, not a project.
