Week in Battery Tech: Solid-State Progress, Record Installations, and the Industry Shift to 2026 Q4

Solid-State Leaves the Lab and Hits the Road

The solid-state battery narrative shifted dramatically in late 2026 as several manufacturers moved beyond laboratory demonstrations. Mercedes-Benz showcased an EQS prototype that drove 1,205 km from Stuttgart to Östersund without a single charging stop, running on lithium-metal solid-state cells from US maker Factorial — cells developed with Mercedes-AMG's Formula 1 powertrain unit in Brixworth. The pack holds about 25% more usable energy at equivalent weight and size, and Mercedes now targets series production by the end of the decade. The test route traversed ordinary highways through three countries, not a closed test track, which underscores the technology's real-world viability. China's Ganfeng has started small-scale production of a solid-state cell rated at 500 Wh/kg, while GAC-backed Greater Bay Technology rolled out all-solid-state A-sample cells and targets gigawatt-hour production this year. The first production vehicle on a solid-state pack has become a motorcycle: the Verge TS Pro from an Estonian-Finnish firm uses cells from Finnish startup Donut Lab, which claims 400 Wh/kg, five-minute charging, and 100,000-cycle life — though one rival chief executive dismissed such claims as nonexistent in passenger cars. A March pack-level test from a respectable lab sustained 100 kW for five minutes in a real bike, suggesting real progress even if volume production remains distant.

Silicon anodes represent the upgrade happening right now in showroom cars. The new Mercedes-AMG GT 4-Door Coupé, built on the AMG.EA platform, uses a silicon-containing anode paired with an NCMA cathode to reach 298 Wh/kg at the cell level — the high end of today's lithium-ion. That chemistry enables 600 kW charging and 10% to 80% in about 11 minutes, the fastest charging from any Western carmaker. Production starts at Sindelfingen in summer 2026. Silicon stores far more lithium than the graphite anodes in most cells, which is why it boosts both range and charging speed. The problem is that silicon swells by roughly 300% as it charges and shrinks as it drains, which cracks a pure-silicon anode apart. Today's answer is a silicon-graphite blend, with the share of silicon creeping up over time. The Netherlands' LeydenJar and Germany's NorcSi are both scaling silicon-anode production in 2026, while US players Sila and Group14 ramp up volume. Graphite is overwhelmingly processed in China, so a shift toward silicon is partly an industrial hedge, not only a performance one. It drops into existing designs as the cells mature, with no new car platform required.

Sodium-Ion Arrives for Cold-Climate and Affordable EVs

While solid-state targets premium applications, sodium-ion chemistry is arriving fast for cheap, cold-climate, city-range cars. CATL's Naxtra sits at about 175 Wh/kg today, close to lithium iron phosphate, and the company is targeting LFP-level density within three years to reach roughly 600 km of range. The discharge power at minus 30 is nearly three times that of an equivalent LFP cell, CATL says. For a city-range car in a cold climate, that is a bigger deal than a few extra kilometres on paper. CATL says its Naxtra pack retains about 90% of capacity at minus 40 and can still take a charge when frozen solid. BYD's third-generation sodium cells are rated for more than 10,000 charge cycles. For European drivers, the timing lines up with the charging network: the IEA's Global EV Outlook 2026 put the Netherlands at 210,000 public charging points at the end of 2025, ahead of Germany's 196,000 and France's 185,000, with five EU countries growing their networks by more than 50% in a single year. Sodium's energy density still trails lithium, so the pull is elsewhere: the element is abundant, and it sidesteps the cobalt and nickel that make conventional packs expensive. BYD's third-generation sodium cells are rated for more than 10,000 charge cycles, and CATL says its Naxtra pack retains about 90% of capacity at minus 40 and can still take a charge when frozen solid. The IEA's Global EV Outlook 2026 put the Netherlands at 210,000 public charging points at the end of 2025, ahead of Germany's 196,000 and France's 185,000, with five EU countries growing their networks by more than 50% in a single year. Ultra-fast points of 150 kW and up now make up 11.8% of Europe's public network, up from 9.4% a year earlier, according to a 2026 gridX charging report.

For European drivers, sodium-ion promises cheaper, cold-weather-capable cars without the range anxiety that limits LFP in northern latitudes. The element is abundant and sidesteps the cobalt and nickel that make conventional packs expensive. Changan's Nevo A06, unveiled in February, runs CATL's Naxtra cell at roughly 175 Wh/kg, close to lithium iron phosphate, and keeps working from minus 40 degrees Celsius to plus 70. The operating range matters more for a Tallinn February than another few kilometres of range on paper. BYD's third-generation sodium cells are rated for more than 10,000 charge cycles, making them among the longest-lasting options on the market.

Battery Installations Break Records in the US

The United States installed a record 20.2 gigawatt-hours of new battery capacity in the second quarter of 2026, enough to supply the daily electricity needs of about 700,000 homes. That's putting the country on a trajectory to see 71 gigawatt-hours of batteries installed in 2026, a 20% increase over last year. This growth is being driven by a combination of cheaper batteries and an urgent need for more energy storage capacity as renewables such as solar and onshore wind power are added to the grid. Massive, utility-scale systems are leading the way — they're responsible for most of the record-setting quarter. Seven new gigawatt-scale battery installations (those with a capacity of over one gigawatt-hour) came online during the three-month stretch, according to the report published by Benchmark Mineral Intelligence and the Solar Energy Industries Association. "It really came down to a handful of big projects," says Shan Tomouk, energy storage and energy lead for Benchmark Mineral Intelligence.

Behind-the-meter batteries — both residential and industrial — also showed growth, though the residential sector saw a sharp slowdown. Home installations are projected to drop by 16% in 2026 compared with last year, largely because a tax credit that helped subsidize home battery systems ended in 2025. Home installations should recover by the end of the decade, Tomouk adds, and tax credits for nonresidential batteries have largely survived. Data centers led the behind-the-meter category, making up about three-quarters of new batteries in the commercial sector. Almost all the systems coming online use cells made in China, though some are put together into complete energy storage systems in the US. Tariffs are already pushing the US energy storage industry toward domestic production, and beginning this year, energy storage tax credits required projects to limit their reliance on batteries imported from China. There's manufacturing capacity set to come online in the US, though these factories probably won't be able to meet demand until at least 2030 or so, which means prices could tick up in the near term.

The battery market's shift toward US-made technology represents a significant strategic realignment. Nearly all systems coming online today use cells made in China, though some are put together into complete energy storage systems in the US. Energy storage tax credits now require projects to limit reliance on batteries imported from China, accelerating the domestic build-out. Manufacturing capacity set to come online won't meet demand until at least 2030, meaning near-term prices could rise. This creates a window where global supply chain shifts reshape the economics of stationary storage across all regions.

What It Means for European Drivers

Strip away the chemistry and the practical question is whether an EV fits where you live. Across more of Europe, the infrastructure now says it does. The Netherlands ended 2025 with 210,000 public charging points, ahead of Germany at 196,000 and France at 185,000, with five EU countries growing their networks by more than 50% in a single year: Denmark, Estonia, Latvia, Lithuania and Romania, partly helped by the EXPAND-E programme and its more than 70 million euros across 23 member states. AFIR, the EU rule that mandates high-power charging every 60 km along major highways, is pushing the build-out. The latest EV battery technology and the chargers to feed it are arriving together, which has not always been true. Line up the new battery technologies of 2026 and the pattern is clear: solid-state has gone from a lab curiosity to a Mercedes crossing three countries on a single charge. Sodium-ion, the chemistry built for a proper European winter, is about to put cheap cold-weather cars on sale. Silicon anodes are already in showrooms, quietly buying back range and minutes at the plug. Underneath it all, battery prices, and thus EV prices, keep falling. If you have been holding out for the next EV battery update before you switch, this is the year the waiting stopped paying off. Plenty is still a year or two away, but the innovations that have already arrived are real.

References

• Saft press release (Oct 19, 2026), PV Magazine (Oct 20, 2026)
• GM Forward (Oct 21, 2026), QuantumScape (Oct 21, 2026)
• IEA Global EV Outlook 2026
• Benchmark Mineral Intelligence / Solar Energy Industries Association Q2 2026 report
• CATL technology updates 2026
• Envision AESC Yichang gigafactory commissioning (Oct 21, 2026)
• See also the latest industry analysis at Reuters Energy and our Battery Tech category for related coverage.