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Toronto Hydro CR Report 2016

INTRODUCTION MATERIALITY AND STAKEHOLDER ENGAGEMENT OUR CITY OUR OUR PEOPLE ENVIRONMENT GLOSSARY AT A GLANCE Data sources used to calculate GHG emissions Energy consumption data (electricity and natural gas) is collected from utility providers for all Toronto Hydro facilities included in the organizational boundaries described above. The following information is used to complete the GHG calculations: • Fuel consumption of fleet – documented with fuel supplier data and billing statements • SF6 – emission calculations were based on vendor top-up reports, including the kilograms of SF6 gas used during equipment top-ups and losses during equipment decommissioning • Energy consumption of facilities – collected from digital files on electricity, natural gas billing statements, and consolidated billing files from third-parties for leased buildings. Where natural gas use data was not available, 2012 data (the most recent data available) was used • GHGs from refrigerant leaks are not included in the calculations as they were deemed immaterial (<0.05% of emissions) Internal Data Assurance Toronto Hydro conducted a sample audit of select electricity and natural gas bill entries, fuel consumption data, SF6 manufacturer data and line loss data (electricity purchases and sales) to help decrease the potential for data entry errors. Changes to our organizational boundaries Since the last Corporate Responsibility report in 2014, Toronto Hydro worked on renovating a facility at 715 Milner Avenue, which will replace a building previously leased. Another office space at 777 Bay Street is now being occupied, which uses deep-lake cooling technology. These changes are reflected in the current organizational boundaries. Toronto Hydro measures GHG emissions from four key sources: vehicle fleet, facilities, lines losses, and SF6 gas releases from equipment. In 2016, Toronto Hydro generated a total of 40,318 t CO2e, which represents a 52% decrease over 2014. In 2015, a total of 64,138 t CO2e was generated. OUR ENVIRONMENT I TORONTO HYDRO 73


Toronto Hydro CR Report 2016
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