Johns Hopkins University is a private research university located in Baltimore, Maryland, United States. Founded in 1876, the university is named after its benefactor, Johns Hopkins, who was a philanthropist and entrepreneur. The university is known for its world-class research facilities, cutting-edge academic programs, and commitment to excellence in education.

As a leading institution of higher education, Johns Hopkins University is committed to sustainability and decarbonisation. The university has set ambitious goals to reduce its carbon footprint and increase its use of renewable energy sources. In 2019, the university announced its commitment to achieve carbon neutrality by 2050, and to reduce its greenhouse gas emissions by 51% by 2025.

To achieve these goals, Johns Hopkins University has implemented a range of initiatives to reduce its energy consumption and increase its use of renewable energy. The university has invested in energy-efficient technologies and practices, such as LED lighting, building automation systems, and high-efficiency HVAC systems. In addition, the university has implemented a comprehensive energy management program that includes energy audits, retro-commissioning, and performance tracking.

One of the key strategies that Johns Hopkins University has adopted to increase its use of renewable energy is the use of corporate power purchase agreements (PPAs). A corporate PPA is a long-term contract between a company and a renewable energy provider, in which the company agrees to purchase a certain amount of renewable energy at a fixed price over a specified period of time. By entering into a corporate PPA, Johns Hopkins University is able to secure a reliable and cost-effective source of renewable energy, while also supporting the development of new renewable energy projects.

In 2018, Johns Hopkins University signed a 15-year corporate PPA with a wind energy provider, which will supply the university with 250,000 MWh of renewable energy annually. This represents approximately two-thirds of the university's annual electricity consumption, and will help to reduce the university's greenhouse gas emissions by over 100,000 metric tons per year. The PPA also provides the university with a fixed price for renewable energy, which will help to stabilise its energy costs over the long term.

In addition to its use of corporate PPAs, Johns Hopkins University has also invested in on-site renewable energy generation. The university has installed solar panels on several of its buildings, which generate approximately 1,000 MWh of renewable energy annually. The university has also installed a geothermal heating and cooling system, which uses the earth's natural heat to provide heating and cooling to several of its buildings.

Johns Hopkins University is committed to being a leader in sustainability and decarbonisation. The university's commitment to reducing its carbon footprint and increasing its use of renewable energy is not only good for the environment, but also helps to reduce its operating costs and improve its bottom line. By adopting innovative strategies such as corporate PPAs and on-site renewable energy generation, Johns Hopkins University is setting an example for other institutions of higher education to follow.