TTC has announced plans to switch to electric buses
from http://www.blogto.com/city/2017/11/ttc- ... t-toronto/
The new battery electric buses, as well as 230 requested "new generation hybrid electric buses," would have an expected delivery date of no later than March 31, 2019.
For all these provisos, the TTC is, however, targeting an ambitious date to get emissions free. By 2040, the Commission would like to have phased out all of its older buses and run electric technology exclusively.