The Government could decide this summer if it is ready to back a £100 million gigafactory that would create up to 600 jobs in central England – or whether the project will go over to Europe.
The boss of Intelligent Energy said his company was desperate to commit to a UK manufacturing base as demand for its technology grows.
But he said the plans would need millions of pounds of government support – and said talks were ongoing with the Department for Business, Energy & Industrial Strategy (BEIS).