Greenhouse Gas Inventory
Every year, the Office of Sustainability’s Emissions team performs an inventory of Colorado College’s (CC) carbon emissions. The data from the inventory is used in the annual report, the Greenhouse Gas Technical Report. The goal of this report is to provide an overview of CC’s carbon emissions. It includes Colorado College’s gross emissions, as well as net emissions that take into account carbon offsets and carbon sinks.
The Report
The report provides information about greenhouse gases and the different "scopes" CC uses to differentiate sources of carbon emissions. It also explains carbon neutrality, carbon offsets, and Renewable Energy Certificates (RECs). The report covers all data collected during the FY25 greenhouse gas inventory process, beginning with an explanation of the methodology and ending with graphs from SIMAPⓇ, the online platform used for the inventory. Below is a quick snapshot of the current state of emissions at CC.

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Greenhouse Gases and Scopes
Greenhouse gases (GHGs) include gases such as carbon dioxide, water vapor, methane, and nitrous oxide. Solar radiation (sunlight) is absorbed by the Earth and released back into space. However, GHGs in the atmosphere absorb the energy that is trying to leave and radiate it back to the Earth. More energy is reabsorbed than is released; excess heat is prevented from leaving the atmosphere. This imbalance leads to global warming. Emissions from human activities are increasing the amount of GHGs in the atmosphere, which is exacerbating global warming. GHGs are measured in metric tonnes of carbon dioxide equivalent, or MTCO2E.
All GHGs have a different Global Warming Potential (GWP). This is the amount of heat absorbed by each gas in the atmosphere; the higher GWP a gas has, the more it will exacerbate global warming. Methane is 28 times as potent as carbon dioxide and nitrous oxide is 265 times more potent than carbon dioxide (IPCC). The unit of measurement for emissions, MTCO2E, scales methane and nitrous oxide emissions to their carbon dioxide-equivalent emissions so that all emissions are in terms of carbon.
Colorado College keeps track of GHG emissions by sorting them into categories based on their source. These are called “scopes”:
- Scope 1 - Direct Institutional: Scope 1 emissions measure direct emissions from sources that are owned and/or operated by Colorado College. This includes natural gas for heating, gasoline, and diesel for CC's vehicle fleet, and fertilizers and refrigerants.
- Scope 2 - Indirect Institutional: Scope 2 emissions measure indirect emissions from the generation of purchased electricity.
- Scope 3 - Indirect Behavioral: Scope 3 emissions are related to behavioral choices. CC has chosen to measure emissions from study abroad, faculty and staff commuting, student travel to–and from home, business travel paid for by Colorado College, solid waste and wastewater, paper usage, and T&D losses. These choices reflect CC's commitment to addressing and changing the behavioral patterns that drive indirect emissions.
Offsets and RECs
Colorado College invests in an emissions avoidance project at Larimer County Landfill in Fort Collins, Colorado. This project called the Larimer County Landfill Gas Destruction Project, breaks down methane in landfill waste and uses it to generate electricity. It converts previous sources of emissions into something much less potent, while also generating electricity. CC's investment in this project was instrumental in helping with the project's verification. CC has since used offsets from the project to reach carbon neutrality.
To offset Scope 2 emissions from purchased electricity, Colorado College uses RenewableEnergy Certificates (RECs). RECs allow the tracking of where purchased electricity is coming from to ensure that the electricity sources are renewable. The RECs that CC buys are “bundled.” This means that they come bundled with the local renewable energy that generated them. One REC is equivalent to one megawatt-hour (MWh) of electrical generation. To put this into perspective, one MWh of electricity can power an average U.S. home for 1.2 months. Investing in RECs is important because it supports the development of renewable energy and prioritizes renewable energy generation.
GHG Reporting Data
Colorado College tracks its carbon emissions by submitting annual reports to AASHE STARS® and Second Nature, two organizations dedicated to assisting and tracking sustainability initiatives in higher education institutions. To view CC's emissions data, click on the graphic below.
Quick Facts
- CC’s Baseline Year: 2008
- Units Used to Quantify Carbon Emissions: Metric Tonnes of Carbon Dioxide Equivalent or MTCO2E
- How We Have Reduced Emissions: On-campus projects (building renovations, efficiency upgrades, on-site renewable energy) and investments in carbon offsets and Renewable Energy Certificates
- Main Source of Carbon Offsets: An investment in the Larimer County Landfill Gas Destruction Project in Fort Collins, Colorado, that converts methane from landfill waste into electricity
