This paper looks at energy saving measures in a new museum development at the University of St. Andrews. By comparing the University’s sustainable development policy with the different elements of energy saving incorporated into the new Museum of the University of St. Andrews (MUSA) we can see to what extent practice matches policy. MUSA opened to the public in 2008. As the principal museum of an historic University that has an international reputation for museum studies, it was important that the museum should be of high quality. The University also decided to incorporate into the building various energy saving measures, including the use of solar panels and a ground source heat pump. Because MUSA is one of the most publicly accessible buildings in the University, it was also decided that information on the energy saving measures should be displayed in the museum. The University is therefore extending its teaching on sustainability beyond the University classroom to the general public through MUSA.