The capabilities of Building Energy Management Systems (BEMS) has grown significantly in the last several years. This meteoric growth is in part due to the segment attracting $1.43 billion in venture funding over the last 15 years; software startups secured the largest share of this investment. What began as a system focused at better managing energy use in a building, these tools gave grown across a spectrum ranging from top-down portfolio-level analytical tools, to bottom-up hardware-centric controls. This expanded capabilities mean BEMS are well-positioned to better understand and manage energy use in buildings, but also across global portfolios. In this report, we have categorized the different BEMS technologies available, and benchmarked the startups in each in terms of their market strategy and cost. As new entrants continue to emerge, the price of deploying BEMS is falling, in some cases to less than $0.01/ft2/year. Players continue to pursue specific segments with tailored value propositions, and consistently deliver their software (and in some cases hardware) using a service-based approach. We expect this activity to continue as low-cost sensors and controls proliferate, but urge clients to develop specific use cases and pick their respective segments carefully.