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Toronto Hydro CR Report 2016

OUR ENVIRONMENT SUPPORTING INFRASTRUCTURE Toronto Hydro provides assistance with renewable generation connections as outlined in the Green Energy and Economy Act, OEB guidelines, and the Distribution System Code. In general, system improvements (e.g. short circuit capacity, protection and communication upgrades) are provided for renewable generation resources under regulated rates. Toronto Hydro has a dedicated interconnections group that provides engineering support, pre-assessments and Connection Impact Assessments for renewable generation projects under a streamlined process. In 2015 and 2016, 235 micro Feed-in Tariff (microFIT) interconnections (each under 10kW capacity) were enabled with a total combined capacity of approximately 1.9 MW. In 2015 and 2016, 334 FIT interconnections (each greater than 10kW capacity) totalling more than 39 MW of generation were enabled. This accounted for an estimated 25% of rooftop FIT solar PV installed in the province. When net-metered and Renewable Energy Standard Offer Program projects are included, Toronto Hydro has enabled more than 1,572 renewable generation interconnections totalling approximately 81.9 MW between 2009 and 2016. This was achieved through: • Dedicated interconnection team and streamlined process • Investment in infrastructure projects to address technical grid constraints • Development of an energy centre to monitor/forecast/ dispatch generation resources • Education and outreach programs to stakeholders DIRECT PROJECT INVESTMENTS Toronto Hydro is jointly investing in solar PV projects with the City of Toronto with units installed on city-owned facilities. As of the end of 2016, the projects have a combined capacity of 2.5 MW, which generated 3,430 MWh of electricity in 2016. Toronto Hydro also maintains three other renewable generation projects (Exhibition Place Wind Turbine, Better Living Centre Solar and 500 Commissioners Street Solar), which have an installed capacity of 1.25MW. In 2016, these generated 1,840 MWh of electricity. CLIMATE CHANGE ADAPTATION In 2015, Toronto Hydro completed a vulnerability assessment study following the Public Infrastructure Engineering Vulnerability Committee (PIEVC) 78 TORONTO HYDRO I 2016 CORPORATE RESPONSIBILITY REPORT protocol developed by Engineers Canada. Through this study, a risk assessment was conducted for the various components and areas of the distribution system that are expected to be impacted by projected climate change. The results of this study were used to develop a road map on climate adaptation initiatives. One of the initiatives completed in 2016 was the introduction of stainless steel submersible transformers to mitigate the impacts of floods on these transformers. Stainless steel transformers are less susceptible to corrosion than the previously used mild steel transformers. Toronto Hydro will continue to implement the initiatives identified on the road map. LOAD FORECAST SENSITIVITY STUDY The Station Load Forecast is prepared every year to provide a 10-year peak load forecast for each transformer station. This forecast is used for planning purposes to evaluate station bus capacity adequacy. Ambient air temperatures can affect the load forecast. By using projected future temperature data rather than historical data, a more accurate load forecast was developed to be used for planning purposes.


Toronto Hydro CR Report 2016
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