Poland plans to earmark 4.6 billion zloty (€1.08bn, $1.2bn) in the 2025 federal budget to begin preparations for building the nation’s first commercial nuclear power station.

According to the state-owned Polish Press Agency, finance minister Andrzej Domanski outlined the initial expenditure for what would be the country’s biggest-ever investment days before a cabinet meeting to approve next year’s draft budget.

Earlier this month, the government assumed it would have to secure about $15bn for the project in 2025-2030 period, before it would get further financing from the US, which will supply the nuclear plant technology.