Tallest solar-integrated building in North America wins Clean50 Award

Saint Mary’s University: bringing sustainability to life

Saint Mary’s University was honoured at the Clean50 Top Projects Awards, which annually recognizes Canada’s most innovative projects tackling climate change and sustainability.

Dennis Gillis at a podium shaking hands with a representative from Clean50

Dennis Gillis, Senior Director of Facilities Management at Saint Mary’s accepts the Clean50 Top Project Award

The Loyola Residence Recladding Project, a 22-storey student residence with an integrated, retrofitted solar exterior wall, was selected for its environmental leadership and innovation. Saint Mary’s is proud to represent the post-secondary sector among leading organizations from across Canada.

"Sustainability is at the heart of Saint Mary’s University and is a key pillar of our strategic plan," said Dr. Robert Summerby-Murray, President of Saint Mary’s University. "The Clean50 Award reflects our commitment to building a sustainable future. We are thrilled to see our efforts recognized and hope to inspire similar initiatives across Canada. Universities are driving forces of innovation in green energy research and climate action. Through transformative projects such as this one, Saint Mary’s has become a leader and hub for groundbreaking sustainability efforts.”

Setting new standards for sustainable urban infrastructure

Originally built over 50 years ago, the Loyola Residence faced challenges such as heat retention, leaks, and structural issues. Instead of simply replacing worn-out concrete, Saint Mary’s took advantage of the opportunity to do something unique.

Building-Integrated Photovoltaics (BIPV) are solar power systems built directly into walls, a roof, or windows, generating electricity from the sun but also acting as part of the building’s structure. Saint Mary’s worked with Toronto-based company Mitrex to install BIPV across the entire south-facing wall.

An aerial view of the top of the Sobeys Hub with the Loyola residence to the right

The Loyola Residence tower BIPV system shown on the right, along with solar panelling on the roof of the Sobeys Inspiration Hub

The retrofit includes work from DSRA Architects, Dillon Consulting, Able Electric, Markland Associates, and BMR Structural Engineering, with construction overseen by EllisDon Corporation and Grey Cardinal Management Inc.

According to Clean50, the project is a model for sustainable urban infrastructure, showcasing how older buildings can be revitalized to meet today’s energy efficiency standards.

Saint Mary’s has installed an interactive energy production display in the Loyola Residence lobby, allowing students and visitors to track solar energy generation in real-time. This display further demonstrates the university’s commitment to education and transparency in sustainability.

An interactive display in the Loyola building shows real-time solar energy information

Carbon footprint cut by 51.7% since 2005

Beyond the Loyola recladding project, Saint Mary’s offers a range of campus spaces and programs that bring sustainability to life. Upcoming initiatives include a green roof on the Patrick Power Library, new roof designs for McNally East and Homburg Centre, and a solar canopy for the science parking lot.

Initiatives already completed include:

  • replacing the steam heating plant with a high-efficiency hot water plant;

  • switching from oil to natural gas for heating; 

  • using compact fluorescent lights; 

  • replacing less efficient lights with LED lights; and 

  • increases in Nova Scotia Power’s energy blend from renewable sources.