Does BEopt have a setting to control for differences in delivered vs estimated efficiency in Optimization mode i.e., a safety factor or margin of error?
Can the Optimization tool settings be adjusted so that upgrades are only selected if they deliver x% (e.g., 80%) or greater of the savings they are projected to deliver? A goal is to have a known x% confidence factor in the selected measures.
As a workaround, could you reduce all electricity and fuel rates by 20% to accomplish such an optimization?