Arizona State University (ASU) is a public research university located in Tempe, Arizona, United States. Founded in 1885, ASU is one of the largest public universities in the United States, with over 100,000 students enrolled across its five campuses. The university is committed to sustainability and has made significant strides in decarbonisation, corporate energy, corporate power purchase agreements (PPAs), and renewable energy.

Decarbonisation is a key priority for ASU, and the university has set ambitious goals to reduce its carbon footprint. In 2007, ASU became the first university in the United States to establish a school of sustainability, which is dedicated to advancing research, education, and outreach on sustainability issues. The university has also established a Sustainability Solutions Service, which provides consulting services to businesses and organizations on sustainability strategies.

ASU has implemented a number of initiatives to reduce its carbon footprint, including a comprehensive energy management program that has resulted in significant energy savings. The university has also invested in renewable energy, including solar power, wind power, and geothermal energy. In 2019, ASU announced that it had achieved carbon neutrality for its Tempe campus, making it the first university in the United States to achieve this milestone.

Corporate energy is another area of focus for ASU. The university has implemented a number of strategies to reduce its energy consumption and costs, including the installation of energy-efficient lighting and HVAC systems, as well as the use of smart building technologies. ASU has also implemented a demand response program, which allows the university to reduce its energy consumption during times of peak demand.

ASU has also entered into corporate power purchase agreements (PPAs) to support the development of renewable energy projects. In 2019, the university signed a 20-year PPA with a solar energy provider to purchase 65 megawatts of solar power, which will provide approximately 20% of the university's electricity needs. The PPA is expected to save ASU approximately $10 million over the life of the agreement.

Renewable energy is a key component of ASU's sustainability strategy. The university has implemented a number of renewable energy projects, including the installation of solar panels on campus buildings and the development of a geothermal energy system. ASU has also established a Renewable Energy Network, which brings together researchers, policymakers, and industry leaders to advance renewable energy technologies and policies.

ASU's commitment to sustainability has been recognized by a number of organizations. The university has been ranked as one of the most sustainable universities in the United States by the Sierra Club, the Association for the Advancement of Sustainability in Higher Education, and the Princeton Review. In 2020, ASU was named a finalist for the Climate Leadership Awards, which recognize organizations for their leadership in reducing greenhouse gas emissions and addressing climate change.

In conclusion, Arizona State University is a leader in sustainability, with a strong commitment to decarbonisation, corporate energy, corporate power purchase agreements (PPAs), and renewable energy. The university has implemented a number of initiatives to reduce its carbon footprint and has achieved carbon neutrality for its Tempe campus. ASU's commitment to sustainability has been recognized by a number of organizations, and the university is a leader in advancing sustainable practices and technologies.