Vulcan Energy Resources Ltd is engaged in geothermal energy and lithium exploration and production. The company's Lionheart Project is an integrated lithium and renewable energy project that produces battery-quality lithium from naturally heated subsurface brine in the Upper Rhine Valley, to deliver a local source of sustainable lithium for the European battery industry, with a co-product of renewable energy for local heating needs. It has developed an aluminate-based sorbent, VULSORB, to produce lithium from subsurface brine and harnesses geothermal energy from its operations in the Upper Rhine Valley. The company has three operating segments based on geographical location: Germany, which derives the maximum revenue, other European countries, and Australia.