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Explore options for lower carbon heating fuels such as renewable gas, anaerobic digestion, and other options. 

Co-generation is a major energy efficiency strategy for district energy systems. Fuel is used in a turbine or generator to create electricity then waste heat from the combustion process is used to create hot-water and/ or steam for heating or cooling. The Agricultural campus’s district energy system has been recently upgraded to include a co-generation system and hot water network. AV¾ãÀÖ²¿ Halifax campuses are a strong candidate for low carbon fuel fired co-generation because of consumption profiles and consistent loads, a district heating network that feeds AV¾ãÀÖ²¿ and other entities, and our use of central cooling. Co-generation can provide electricity backup in case AV¾ãÀÖ²¿ is isolated from the power grid, which creates an energy-secure environment for research, data services, and residents. Options analysis for co-generation implementation is ongoing. 

Over 95% of all AV¾ãÀÖ²¿ buildings on the Halifax and Agricultural campus are connected to a district energy network fed by a Central Heating Plant. Converting from steam to hot-water for campus heating can realize up to 30% energy efficiency gains. In the last decade, the Agricultural and Sexton campuses have been converted from steam to hot water. In the next decade, a focus will be on steam to hot-water conversions at the Studley and Carleton campuses. 

In the last decade, nine solar installations have been implemented on campus. In our experience, solar photo voltaic (PV) systems on campus buildings provide roughly 5-25% of the building electricity load. Adding renewable technologies to new and existing buildings and securing potentially 100% of electricity through off-campus renewable energy (such as wind and solar) is a key strategy to achieve more aggressive carbon targets. Explore the Energy, Water, and Green Buildings page for more information on renewable energy and building retrofits on campus.