Primary Energy, Energy Cost, and GHG Emissions All Make Sense

The choice of metric is critical when evaluating and comparing a mixed fuel building's energy performance with an all-electric building's energy performance, or for comparing competing energy investment options for new buildings and replacements.  This presentation will explore the benefits and limitations of different metrics that may be useful for such comparisons and decisions, including energy cost, primary energy, and environmental emissions metrics.  It will also provide an overview of different methodologies and values to implement these metrics to ensure the most equitable treatment of different competitive design and investment options.