Increasing cost and demand for energy is imposing us to find smart ways to save energy. To satisfy the energy requirement and at the same time to cut down the cost, consumption of energy must be monitored and controlled. Energy consumption can be well managed with the capabilities of the Internet of Things (IoT). This paper presents an architecture towards IoT-enabled Green campus Energy Management System. In the proposed system, the data acquisition module collects energy consumption information from each device and transmits it to the cloud platform for further processing and analysis. Since lighting and air conditioning appliances contribute to most of the electricity consumption in the campus environment, they have been taken as a prototype to validate the proposed architecture.