The TPAP process will assess the environmental impact of electrifying core sections of the commuter rail network and the Union Pearson Express airport link, taking the project a step closer to the procurement phase.

Del Duca also confirmed that the province will commission a study into the feasibility of using hydrogen fuel cells as a potential alternative to electrification. An industry symposium will be held in the autumn to explore how the technology might be applied.

Electrification of the network is a key component of the $C 13.5bn ($US 10.2bn) Go Regional Express Rail (RER) programme, which will provide 15-minute interval bi-directional services on five of the seven Go Transit corridors.