Investments in smart building technologies are increasingly being seen as a way to find energy savings within public sector organisations, while continuing to drive critical sustainability goals. With the majority of energy use within businesses stemming from the use of air conditioning, heating, and lighting, automating these services through smart building technologies can deliver substantial savings to an organisation - helping with the initial investment in the technology and beyond. We discuss both the quick, easy wins an organisation can expect to see from investment, as well as the longer term ability to analyse energy consumption and identify further potential savings based on building occupancy and utilisation.