
Stanford Marks 10 Years of Energy System Innovations
The SESI program transformed the university’s energy system into one that’s safe, sustainable, and resilient and serves as a model for the world.
The R&DE team received leak alerts for high water usage in the EVGR buildings, prompting them to investigate potential causes. This investigation revealed that toilets are one of the leading sources of leaks in residential buildings, and are often unreported and unnoticed by users and leading to significant water waste. This information was sent to the R&DE plumbing team, who identified faulty valves in some toilets in the EVGR buildings that have been causing leaks.
To determine the scope of the valve problem, Emily Blackwell from R&DE developed a survey and assessed toilets in vacant rooms during the summer move-out. This uncovered that an estimated 65% of toilets in the EVGR buildings have these faulty valves, with several active leaks found during the assessment. That’s over a thousand toilets that could potentially have these faulty valves, spring a leak at any moment, or are already leaking without anyone noticing. Unless people discover these leaks and do something about it, Stanford could potentially be losing thousands of gallons of water a day. An individual toilet leak can waste up to 3-5 gallons of water per minute and over 4,000 gallons per day.
The R&DE plumbing team is now in the process of identifying and replacing all faulty valves, as well as communicating with residents on how to identify and report leaks if they occur. This is an exciting project for the Stanford community, as it addresses water waste and fosters a culture of awareness and responsibility among residents. R&DE has already saved 1.5 million gallons of water in EVGR through an ongoing audit that will continue in 2025. By being a part of this process, everyone can contribute to sustainability efforts and enhance the residential experience on campus.
Stay vigilant – if you notice a leak in your toilet, contact R&DE Maintenance Operations by calling 650-723-2281 and help conserve water.
The SESI program transformed the university’s energy system into one that’s safe, sustainable, and resilient and serves as a model for the world.
Sergio Lopez used his fellowship to electrify Stanford’s Educational Farm, reducing emissions and leading the transition of small farms from fossil fuel dependency.
Justin West ’25 piloted an occupancy-based HVAC scheduling system in the Gates building, aiming to reduce energy consumption by 20% through adjustments based on real-time data.