The healthcare sector is a hugely energy-intensive sector that contributes large amounts of greenhouse gas (GHG) emissions and air pollutants. These harmful emissions undermine the health of the same communities the sector aims to heal. The energy choices of hospitals and health systems can have a great impact - the healthcare sector has the opportunity to achieve a triple win, by making smart energy choices that will reduce air pollution and environmental and health impacts, mitigate climate change, and save energy costs.