Ohmium International has achieved a major industry milestone by surpassing the electrolyser sector’s 2030 target of 10 GW per ton of iridium utilisation, reaching an efficiency of 18 GW per ton. The improvement has been enabled by significant technological advancements that have reduced iridium use by 50% in the company’s Lotus Mark 2 PEM electrolyser.

The reduction in precious metal content strengthens the cost-competitiveness of Ohmium’s PEM systems, lowering manufacturing costs and improving the economics of green hydrogen production. Iridium, one of the rarest and most expensive materials used in electrolyser stacks, has long been a constraint on large-scale deployment; halving its usage represents a substantial step forward for the industry.

Ohmium continues to advance its catalyst and stack design, with a stated ambition to further double utilisation efficiency to 36 GW per ton within the next year. The company has also outlined a pathway toward near-zero iridium dependence within the next decade, which would significantly ease supply-chain pressures and enable greater global deployment of PEM technology.

With its progress in iridium reduction and its high system efficiency of 48 kWh/kg, Ohmium positions itself as one of the leading contributors to lowering the cost of green hydrogen. The achievement marks an important milestone for the broader hydrogen industry as it works to scale production technologies and support the transition to a low-carbon energy system.