Greenhouse Gas Emissions

Yale has reduced emissions by 20% since 2005. These reductions equal the amount of greenhouse gases produced by more than 30,000 homes in a year.






A Global Imperative

Greenhouse gas emissions contribute to climate change, which affects human health and ecosystems, weather patterns, and sea level rise. By reducing greenhouse gas emissions, we can help limit the increase in global temperature, and help protect people from potentially catastrophic impacts. 
Yale’s efforts help bolster the Paris Agreement, a pact by 196 nations to reduce global emissions. In June, Yale joined 11 other research universities in publicly committing to support the Paris Agreement. 
This graph shows emissions reductions since 2005.

How was this 20% reduction achieved?

Since 2005, Yale has completed hundreds of projects across our buildings and central power plant utilities. More than twenty-five individual energy conservation projects took place across campus in 2019 along with ongoing attention to energy across our operations. 

What’s next?

Yale University has committed to carbon neutrality by 2050. Since 2014, Yale University has reported its greenhouse gas emissions to The Climate Registry for third party verification. Greenhouse gas emissions reporting will expand to include more Scope 3 categories. Learn more about what’s included in Scope 1, 2, and 3. Initiatives such as the Carbon Charge will engage the campus community in contributing to our success by lowering emissions in campus buildings. 

How can you help?

Stay informed about the impacts of climate change by following the work of programs like the Yale Program on Climate Change Communication and the Environmental Performance Index
  • Do your part. Turn off electronics when you’re not using them, follow temperature setpoints, and report any issues you observe.
  • Lead by example! Your behaviors make a difference, and can help influence others.

Learn more about our 2019 emissions reductions.

Read about our emissions reduction progress over the years

Greenhouse gas reduction strategy — 2006

Greenhouse gas reduction strategy — 2007

Greenhouse gas reduction strategy — 2008

Greenhouse gas reduction strategy — 2009

Greenhouse gas reduction strategy — 2010

Greenhouse gas reduction strategy — 2011

Greenhouse gas reduction strategy — 2012

Greenhouse gas reduction strategy — 2013

Greenhouse gas emissions reduction progress — 2014

Greenhouse gas emissions reduction progress — 2015

Greenhouse gas emissions reduction progress — 2016

Greenhouse gas emissions reduction progress — 2017

Greenhouse gas emissions reduction progress — 2018