The Sentinel project aims to obtain energy savings in schools with minimal investment by developing a cheap, web-based technology that allows students to monitor their school's energy consumption in real-time. The students then engage in educational activities and competitions through social media to reduce usage. The project was developed using private funding and has already been piloted in some schools, showing a reduction in energy bills. There are plans to partner with an Italian non-profit to deploy it in over 1,000 schools in the next three years. With more support, the Sentinel system could be provided to schools free of charge through an energy service company model.