Two solid-state EV battery leaders are joining forces to scale the ‘breakthrough’ tech

SK On and Factorial Energy have announced a new alliance aimed at mass-producing solid-state batteries, a move that electric vehicle watchers consider a major step toward bringing this next-generation technology to the mainstream. The two companies, both leaders in the solid-state space, plan to combine their expertise to develop manufacturing processes that can scale up production. For an industry that has long promised solid-state as the 'breakthrough' that will redefine EV performance, this partnership signals that the technology may finally be approaching commercial reality.

Solid-state batteries replace the liquid electrolyte found in current lithium-ion cells with a solid material, which allows for higher energy density, faster charging times, and improved safety. In theory, that means longer driving ranges and shorter stops at charging stations—two factors that matter deeply to drivers in Saudi Arabia, where distances are vast and summer temperatures can strain conventional batteries. The technology is often described as transformative, but until now it has remained largely confined to laboratories and small-scale prototypes.

For Saudi car buyers, the context is important. The Kingdom is investing heavily in EVs, with brands like Lucid, Ceer, and Hyundai all competing for attention, while Tesla remains a strong presence. Currently, nearly all EVs on Saudi roads use lithium-ion batteries. Solid-state cells from this new alliance would compete not only against that established chemistry but also against other solid-state players, such as Toyota, which aims to introduce its own version by the mid-2020s. The race is on to see which manufacturer delivers a practical, affordable solid-state pack first.

Shoppers should watch for a few key signals. First, the timeline for when these batteries actually appear in production vehicles—partnerships are easier to announce than to execute. Second, the cost: initial solid-state vehicles are likely to carry a premium until economies of scale kick in. Third, compatibility with existing charging infrastructure in Saudi Arabia, which is still evolving. If SK On and Factorial succeed,