An additional problem, in addition to the major one that trash trucks don't spend any significant period of time on major streets or consolidated routes, is tha

An additional problem, in addition to the major one that trash trucks don't spend any significant period of time on major streets or consolidated routes, is that there is no readily available product for dynamic rewiring of trolley poles. The operator would have to come to a complete stop, exit the vehicle, and align the poles each time they turned onto an electrified street. This would add considerable time to the route and create a traffic disruption and safety problem for the operators. This could probably be addressed with some robotics and machine vision, but that's a whole new technology to develop that would still require years to be ready for use at city scale. Overhead charging systems with automatic connection for buses have been developed by a couple of vendors (e.g. OppCharge) but are only used while stationary and have not achieved wide deployment. Wireless charging via pavement-embedded coils is actually a much better established technology and is in reasonably wide use for electric buses, but also hasn't been demonstrated in motion and is even more expensive to install than overhead catenaries.