This research paper describes the impact that reductions to the Ontario electricity grid’s emissions factors under OBC Supplementary Standard SB-10 will have on the viability of Combined Heat and Power (CHP) systems. Using data provided by EQ Building Performance, Power Advisory LLC, and POWER GENySYS, this report provides an hourly analysis of electricity and natural gas loads for an archetype building, average hourly electricity grid emissions based on data for 2014-2017, and an hourly CHP simulation. This report demonstrates that for this Archetype MURB, all of the CHP units and their applications included in the simulations of the Proposed Design with CHP and the Reference Building without CHP resulted in lower emissions for the Proposed Design over the Reference Building.