Hospitals are among the most energy-intensive facilities. In terms of Btu per square foot, for example, inpatient health care facilities are the second most energy-intensive facility type across the United States, according to the Energy Information Administration.
Just what makes them so energy-intensive? Well for starters, hospitals are open 24 hours a day and are occupied by hundreds or thousands of employees, patients, and visitors. They tend to have sophisticated heating, ventilation, and air conditioning systems to control temperatures and air flow. Moreover, many energy-intensive activities occur in hospitals: laundry, medical and lab equipment use, sterilization, food service, refrigeration, and computer and server use.
Some of the possible improvements at the structure level are replacement of burners and use of stack economizers on boilers (15% to 20% of the energy used in a boiler plant is lost up the boiler stack), installing a cogeneration (or combined heat and power) system, converting mechanical steam traps over to venturi orifice steam traps, and more. Just by converting mechanical steam traps over to venturi orifice traps such as the GEM Trap can result in a 10% reduction in fuel costs.
Again, we're talking about existing, proven technologies that can help hospitals save money by reducing their fuel bills while also lowering their greenhouse gas emissions. Take for instance, Thermal Energy International --- their energy efficiency solutions can increase the efficiency of a hospital's heating and steam system to as much as 95% with typical project paybacks (for their combined technologies) within three to five years.
With as much as 50% of a hospital's total budget being directed towards energy spending, clearly there are some opportunities to be had.