British Thermal Unit

The City of Chicago recently issued its annual report on commercial building benchmarking. I pick on Chicago because (1) its upper-Midwest location has a climate like that of many of our readers, and (2) because it uses ENERGY STAR® Portfolio Manager, which I addressed several times before. With Portfolio Manager, everybody seems to get a trophy, and results are troublesome to me. Also, for reference, I published this post last fall, pointing out the failures of energy codes to move the energy intensity needle. Using data from the Energy Information Administration, that post showed that buildings built in the past…