Cold climate heat pumps for GHG emission reductions: A smart-grid approach

Cold climate heat pumps for GHG emission reductions: A smart-grid approach Dr. M.F. Lightstone, P.Eng., FCSME, FCAE, from the Department of Mechanical Engineering at McMaster University, presents a smart-grid approach for cold climate heat pumps aimed at reducing greenhouse gas emissions. Electrically based heating through the implementation of air source heat pumps (ASHPs) can provide significant greenhouse gas (GHG) emission reductions if the electricity supply is predominantly non-carbon based. The additional electrical load can, however, negatively impact the electrical distribution and power generation supply infrastructure. This article presents a brief summary of the impact of ASHPs on GHG emissions and electrical power requirements for a single-family home located in Toronto, Canada. It illustrates the significant impact that the electrical power supply mix has on emission reductions. It also discusses the use of hybrid heating as a mechanism for electrical demand management.