Toronto Hydro is testing a pole mounted storage unit.
http://www.renewableenergyworld.com/articles/pt/2017/06/toronto-hydro-ryerson-launch-pilot-project-to-store-energy-in-pole-mounted-compact-box-toronto-star.html?cmpid=enl_rew_energystoragenews_2017-06-22&[email protected]&eid=291113142&bid=1792650