This guide was developed to provide healthcare administrators in the Caribbean islands the resources necessary to find energy savings for their facilities, finance those savings, and follow through with the activities necessary to realize those savings. The guide has an accompanying website (www.hospitalretrofits.org) that serves as an easy-to-use tool to break through the barriers of complex engineering and financing models; and gets to real and actionable savings that can be tailored to a specific facility. Authored jointly by Arup, Carbon War Room, the Caribbean Community Climate Change Centre, and Rocky Mountain Institute, the guide supports the mission to accelerate the adoption of business solutions that reduce carbon emissions and advance the low-carbon economy. It should be noted this work would not be possible without a number of excellent industry texts that set out clear processes for implementation and wider guidance. A full list of references is outlined in Appendix B.