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Toronto Hydro CR Report 2016

OUR CITY G4-EU10 Planned capacity against projected electricity demand over the long-term Toronto Hydro has a responsibility to provide safe and reliable electrical power to the residents of Toronto. In addition to the maintenance of the existing system, this requires planning to develop distribution infrastructure in support of future growth. Toronto is growing at a rapid pace with a projection of approximately 233,000 more people moving into the city between 2016 and 2020, according to the Ontario Ministry of Finance. The demand for electricity as a clean power source is also growing as demonstrated by the increased electrification of transportation (e.g. the Metrolinx Eglinton Crosstown Light Rail Transit, the Toronto-York Spadina Subway Extension and incentives for electric vehicles through the Province of Ontario). Finally, a single highrise building – the “vertical city” – can consume as much electricity as a small town. For example, one highrise building could have an electricity demand as high as 12 MW, while the City of Kenora had a peak demand of approximately 19 MW in 2016. Toronto Hydro makes plans taking all of these growing requirements into consideration and will fulfill its responsibilities to provide power to the residents of Toronto. Toronto Hydro regularly forecasts peak electricity demand to ensure sufficient station capacity is available to meet long-term customer needs. This includes ensuring that new customers can be connected as required. These are important conditions of Toronto Hydro’s distribution license. When capacity or operational constraints are identified, Toronto Hydro makes the necessary upgrades to stations or facilities jointly-owned with Hydro One Networks Inc. (Hydro One). Demand forecasting is a critical input into the regional planning process conducted with the IESO and Hydro One, as it helps ensure that the transmission system supplying Toronto Hydro stations meets current and future requirements. Planning for the electricity system in Ontario occurs at three levels: • Bulk system planning – issues that impact the system on a provincial level • Regional system planning – issues on a more regional or localized level where IESO conducts planning exercise on a five-year cycle or as required • Distribution system planning – issues on a more regional or localized level where Toronto Hydro conducts yearly assessments Toronto Hydro conducts distribution system infrastructure planning, which includes local generation and CDM at the distribution level, and coordinates with Hydro One and the IESO on transmission supply facilities. New and enhanced transmission supply facilities are also coordinated for some stations. 26 TORONTO HYDRO I 2016 CORPORATE RESPONSIBILITY REPORT


Toronto Hydro CR Report 2016
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