Sibanye-Stillwater has completed a multidisciplinary assessment of its Keliber lithium project in Finland, confirming the project’s technical readiness and outlining a staged approach to commissioning amid current market conditions.
The Keliber project is regarded as the European Union’s most advanced fully integrated lithium development, with planned production of around 15,000 tonnes per year of battery-grade lithium hydroxide monohydrate over a mine life exceeding 18 years. It is also one of the few lithium hydroxide refineries outside China and has been designated a strategic project under the EU’s Critical Raw Materials Act, reflecting its importance to the bloc’s battery supply chain.
According to Sibanye-Stillwater, construction of the fully integrated mine, concentrator and refinery remains on track, with completion of the construction phase and cold commissioning expected in the first quarter of 2026. The total capital investment required to complete construction is estimated at approximately €783 million.
Following the assessment, Sibanye-Stillwater and its strategic partner, Finnish Minerals Group, have agreed that a staged start-up represents the most prudent path forward. Under this approach, initial commissioning will focus on achieving operational readiness at the mining and concentrating stages before determining the timing for commissioning the refinery.
The company said this phased strategy is intended to reduce ramp-up risks while preserving financial flexibility, allowing certain capital expenditures and refining ramp-up costs to be deferred depending on lithium market conditions. Finnish Minerals Group is preparing to contribute additional funding on a pro rata basis in line with its 20% equity stake to support the project through the ramp-up period.
Sibanye-Stillwater CEO Richard Stewart said the agreed approach balances technical readiness with market realities, ensuring the project advances in a responsible and commercially disciplined manner while remaining positioned to supply locally produced lithium into the EU battery value chain.