Supercritical CO2 Waste Heat Recovery and Utilization Technology

Originally a part of the Emissions Reduction Alberta (ERA) Industrial Efficiency Challenge, the TC Energy Waste Heat Recovery Project involves the installation of a demonstration waste heat recovery (WHR) generation system at one of TC Energy’s compressor station sites in Alberta designed to dramatically reduce greenhouse gas emissions.

The simplified “sCO2 system technology” is a first-of-a-kind approach in WHR and uses Supercritical Carbon Dioxide (sCO2) as the working fluid to recover waste heat from a gas turbine and, using a generator, convert it to emissions-free electricity.

This new technology has the potential to achieve the elimination of water use, operational simplicity for future projects, minimal environmental impact and an increased heat recovery cycle efficiency that plugs right into the grid.

It also creates an additional value stream from what is usually a wasted source of energy. 

The demonstration project is estimated to have GHG reductions up to 44,000 tCO2e/year once fully implemented

By creating carbon offsets from the displacement of grid electricity, this project has the potential to reduce the facility’s Carbon Competitiveness Incentive Regulation (CCIR) compliance costs by up to $1.3M/yr.