New build production completes tomorrow (20 March) on the Aventra programme at the company's Litchirch Lane facility.
Alstom said there will then be a period of time, until the summer, when it carries out testing of these new trains, while also undertaking services and maintenance work on existing fleets at the Derby site.
It added that it has identified a number of new build and refurbishment projects that can be brought forward to enable work to start quickly, together with longer term competitive procurements that it and other manufacturers can bid for.
If an agreement can be found with government in the next few days, Alstom believes it can commit to bringing its next generation of commuter train – Adessia – to Derby where it can be designed and then built.
Nick Crossfield, managing director at Alstom UK and Ireland, said: "Adessia will be Alstom's next generation of commuter train, and it is a huge opportunity for Derby and the wider UK rail sector.
"We are continuing to hold very constructive discussions with the Department for Transport to find a sustainable future for Derby, but time is short as our current projects are almost complete.
"We are committed to working with the government to create the certainty our staff and UK suppliers need and deserve."