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Toronto Hydro 2014 CR Report_FINAL

G4-EU10 Planned capacity against projected electricity demand over long-term As a condition of our distribution licence, we must regularly forecast our peak electricity demand to ensure we have sufficient station capacity to meet long-term customer needs. We must also ensure that we have the ability to connect new customers as required. When capacity or operational constraints are identified, we make the necessary upgrades to our 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 our stations meets current and future requirements. Planning for the electricity system in Ontario occurs at three levels: • Bulk system planning — issues that impact the provincial level high-voltage system • Regional system planning — issues on a more regional or localized level where IESO conducts planning exercises 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 requirements. We also coordinate new/enhanced transmission supply facilities for some of our stations. 24 TORONTO HYDRO 2014 CORPORATE RESPONSIBILITY REPORT


Toronto Hydro 2014 CR Report_FINAL
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