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66 Slater

66 Slater is a 244,000 square foot office building in Ottawa Ontario. Originally constructed in 1969 the property has undergone numerous energy conservation initiatives and upgrades. These efforts have resulted in large energy reductions propelling the site’s Energy Star Score from a 42 to a 78 in just five short years. The decision to go for a LEED Certification was made in December 2014 after an extensive LEED feasibility study was conducted at the site. The site team worked diligently over the next year resulting in a successful LEED Gold certification for Existing Buildings (O+M) in late April of 2016. The benefits offered by a LEED certified building include lower operating costs, waste reduction, water conservation, greenhouse gas emission reduction and a healthy and safer building.

Green Features

  • Building Retro-Commissioning
  • Installed Real-Time Metering Software
  • Improved Operating Procedures (enhanced equipment run-time schedules and equipment maintenance procedures)
  • Numerous Mechanical Equipment Replacements
  • Building Lighting Retrofits
  • Low Flow Washroom Fixtures LEED EB (O+M) Compliant
  • Enhanced Envelope Maintenance
  • Improved Indoor Air Quality


  • LEED Gold for Existing Building (O+M)
  • 20 VIC Sustainable Achievements Award – Sustainability Team Champion Award 2016