Since 2006, CIMA+ has been providing Hydro-Québec with detailed engineering services for voltage conversion projects involving overhead and underground power networks on the Island of Montreal. Starting in 2013, CIMA+ has worked on three major, mostly underground, network conversion projects, involving the inspection of 15 km of the network, replacement of 1,500 m of underground conductors, and various works on over 25 transformer vaults as well as 40 underground vaults.