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"Our goal was to achieve 115 kBtu per square foot per year," says Alan Eber, manager of engineering and energy at Gundersen Health System.
The hospital opened in 2014 and was achieving 129 kBtu per square foot after its first year of operation, Eber says--not quite where it wants to be, so it's continuing to adjust its systems and revisit energy use throughout the building in an ongoing effort to bring that number down.
What stood out: To help meet the system's net-zero energy goal, Eber says the project set an energy target of 100 kBtu per square foot for the 427,000-square-foot hospital.
The school prevented the release of 488 MtCO2e (million metric tons of carbon dioxide equivalent) of greenhouse gas emissions and achieved an ending EUI of 129 kBtu per square foot.
It's a much more efficient method of temperature control over burning fossil fuels, and it will save Gundersen 70 to 80 kBtus per square foot annually.
The more than 3,000 participants in the 2012 competition saved a combined total of over three 3 kBTUs of energy and $50 million in utility costs.
Energy consumption is measured in kBTU per sq ft per year, and all buildings of a similar nature are compared to each other.