Fremont Union High School District (FUHSD) is a public school district located in Santa Clara County, California, United States. The district was established in 1923 and serves the cities of Cupertino, Los Altos, and Sunnyvale. FUHSD operates five high schools and one adult school, providing education to over 11,000 students.

As a public institution, FUHSD has a responsibility to ensure that its operations are sustainable and environmentally friendly. The district has taken several steps towards decarbonisation and reducing its carbon footprint. One of the primary ways in which the district has achieved this is by investing in renewable energy sources.

FUHSD has installed solar panels on the rooftops of several of its schools, which generate clean energy and reduce the district's reliance on fossil fuels. The solar panels have a combined capacity of 3.6 megawatts, and they generate over 5 million kilowatt-hours of electricity annually. This is equivalent to the energy needed to power over 700 homes for a year.

In addition to generating its own renewable energy, FUHSD has also entered into a corporate power purchase agreement (PPA) with a local renewable energy provider. Under the PPA, the district purchases renewable energy from the provider at a fixed price for a set period of time. This ensures that the district has a stable source of clean energy, while also supporting the growth of the renewable energy industry.

FUHSD has also implemented several energy efficiency measures to reduce its overall energy consumption. The district has upgraded its lighting systems to more energy-efficient LED bulbs, installed motion sensors to turn off lights when rooms are unoccupied, and implemented a district-wide energy management system to monitor and control energy use.

In addition to its efforts to reduce its carbon footprint, FUHSD is also committed to promoting sustainability and environmental awareness among its students. The district has implemented a comprehensive environmental education program that includes classroom instruction, hands-on activities, and community outreach.

FUHSD's commitment to sustainability and renewable energy has not gone unnoticed. The district has received several awards and recognitions for its efforts, including the California Green Ribbon Schools Award and the Energy Efficiency and Sustainability Best Practices Award from the California School Boards Association.

FUHSD's commitment to decarbonisation and renewable energy is a shining example of how public institutions can take a leadership role in addressing climate change. By investing in renewable energy sources and implementing energy efficiency measures, FUHSD is reducing its carbon footprint and demonstrating its commitment to a sustainable future.