Duke University achieved carbon neutrality in 2024, marking a significant milestone in its sustainability journey. However, achieving this status does not mean the university eliminated all its emissions.
Instead, it represents a strategic balance between reducing emissions and offsetting those that remain. In Duke’s case, this included a $4 million investment in carbon offsets to neutralize its greenhouse gas (GHG) emissions.
Duke’s Path to Carbon Neutrality: Balancing Reductions and Offsets
Duke University, under the American College and University Presidents’ Climate Commitment, pledged to achieve carbon neutrality across its emissions-generating activities. Its Climate Action Plan (CAP) categorizes emissions into three scopes:

Duke’s approach aligns with GHG accounting standards from the World Resources Institute, ensuring comprehensive tracking and reduction strategies for all emission sources. The university has significantly cut GHG emissions through various levers including:
- Eliminating coal use,
- Boosting building and utility efficiency, and
- Reducing commuting emissions.
Future reductions are planned through off-site solar investments and campus upgrades like steam-to-hot-water conversions and heat recovery chillers. Duke remains on track to achieve its 2030 emissions goals.
However, 2023 emissions rose 9% compared to 2022, primarily due to air travel nearing pre-pandemic levels. Despite this, energy-related emissions are down 41% since 2007, and 2023 levels remain 21% lower than in 2019.

Duke’s progress toward carbon neutrality began in 2007 when it launched an institution-wide effort to measure and reduce emissions. By fiscal year 2022, Duke had reduced its emissions by 43%, with plans to reach a 45% reduction by its 2024 deadline.

- However, emissions rose slightly, requiring Duke to offset nearly 69% of its 2007-level emissions instead of the planned 55%.
This reliance on carbon offsets underscores a critical reality: achieving net-zero emissions without offsets is nearly impossible for large institutions. Matthew Arsenault, Duke’s assistant director of carbon and sustainability operations, highlighted that:
“No institution, no company is going to be carbon neutral without using carbon offsets. There’s literally no way to reduce your emissions actually to zero.”
Carbon offsets provide a mechanism to balance emissions from essential activities, such as powering campus buildings and transportation. These activities, while minimized through efficiency measures, can only be partially eradicated.
How Carbon Offset Credits Work
Carbon offsets allow institutions to balance emissions by funding projects that either reduce GHG emissions or remove existing emissions from the atmosphere. Institutions like Duke use these tools to purchase carbon accounting units traded on carbon markets. These markets enable organizations to buy and sell surplus credits to meet their sustainability and net zero goals.
For Duke, offsets became a practical and ethical way to achieve carbon neutrality, given the current limitations of emission reduction technologies.
Carbon Offsets in Action: The Key to Duke’s Carbon Neutrality
Duke’s approach to carbon offsets has evolved over the years. In 2009, the university launched the Duke Carbon Offsets Initiative (DCOI), the first university-based program of its kind. This initiative focused initially on developing new offset projects, such as a methane-capture effort at a North Carolina hog farm, where methane was converted into usable electricity instead of being released into the atmosphere.
Other early projects included residential energy efficiency upgrades, urban tree plantings, and solar installations. These efforts were designed to both reduce GHG emissions and align with Duke’s broader sustainability values.
As the 2024 carbon neutrality deadline approached, Duke University shifted its strategy to focus on larger, externally sourced projects to meet its offset needs.
Almost 80% of Duke’s carbon offset portfolio consisted of projects targeting ozone-depleting refrigerants, which contain potent GHGs that can leak into the atmosphere. These projects, developed in collaboration with international partners, represented a significant step in reducing emissions from refrigerants.
The remaining offsets focused on methane capture from dairy farms and landfills, similar to Duke’s earlier hog farm project. By investing in these projects, Duke ensured its offsets addressed emissions effectively and sustainably.
Ensuring Quality and Accountability
Duke’s commitment to sustainability extends beyond simply purchasing offsets. The university employs a rigorous verification process to ensure the quality and ethical standards of its investments. This process involves collaboration with Ruby Canyon Environmental, a registered verifier on carbon markets, to vet prospective offset projects.
To guide decision-making, Duke developed a comprehensive evaluation tool that includes detailed questions about each project. Criteria such as “additionality” (ensuring the emissions reductions would not occur without the project) and “permanence” (long-term commitment to emissions reductions) are prioritized.
Projects that meet these standards are further reviewed by an advisory committee of faculty and students before purchase. Fewer than 10% of potential projects pass Duke’s initial evaluation, highlighting the university’s commitment to investing in high-impact and high-integrity carbon offsets.
What’s Next? Duke’s Plan Beyond Neutrality
While offsets played a key role in Duke’s 2024 achievement, the university recognizes the importance of continuing to reduce its emissions. Efforts are ongoing to expand energy efficiency measures on campus and integrate more renewable energy sources into operations.
Duke University’s carbon footprint will significantly decrease by mid-2025 when three off-campus solar facilities come online. They have a combined capacity of 101 megawatts. These projects will provide about 50% of the campus’s electricity and contribute renewable energy to North Carolina’s grid for decades.
Additionally, Duke is exploring ways to include its health system and international campuses, such as Duke Kunshan University, in future emissions tracking.
The university is now determining its “next-generation” climate goals, focusing on sustaining its carbon-neutral status and further reducing its offset dependency. This includes exploring innovative carbon offset projects, expanding renewable energy use, and encouraging campus-wide engagement in sustainability initiatives.
Carbon offsets will remain an essential tool in the university’s strategy, but Duke aims to rely on them less as it continues to refine its emissions reduction efforts. With its comprehensive approach and commitment to quality, Duke serves as a model for other institutions seeking to balance sustainability goals with the practical realities of carbon offsetting.
The post Duke University Achieves Carbon Neutrality: How Do Carbon Offsets Help? appeared first on Carbon Credits.
Carbon Footprint
Finding Nature Based Solutions in Your Supply Chain
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How Climate Change Is Raising the Cost of Living
Americans are paying more for insurance, electricity, taxes, and home repairs every year. What many people may not realize is that climate change is already one of the drivers behind those rising costs.
For many households, climate change is no longer just an environmental issue. It is becoming a cost-of-living issue. While climate impacts like melting glaciers and shrinking polar ice can feel distant from everyday life, the financial effects are already showing up in monthly budgets across the country.
Today, a larger share of household income is consumed by fixed costs such as housing, insurance, utilities, and healthcare. (3) Climate change and climate inaction are adding pressure to many of those expenses through higher disaster recovery costs, rising energy demand, infrastructure repairs, and increased insurance risk.
The goal of this article is to help connect climate change to the everyday financial realities people already experience. Regardless of where someone stands on climate policy, it is important to recognize that climate change is already increasing costs for households, businesses, and taxpayers across the United States.
More conservative estimates indicate that the average household has experienced an increase of about $400 per year from observed climate change, while less conservative estimates suggest an increase of $900.(1) Those in more disaster-prone regions of the country face disproportionate costs, with some households experiencing climate-related costs averaging $1,300 per year.(1) Another study found that climate adaptation costs driven by climate change have already consumed over 3% of personal income in the U.S. since 2015.(9) By the end of the century, housing units could spend an additional $5,600 on adaptation costs.(1)
Whether we realize it or not, Americans are already paying for climate change through higher insurance premiums, energy costs, taxes, and infrastructure repairs. These growing expenses are often referred to as climate adaptation costs.
Without meaningful climate action, these costs are expected to continue rising. Choosing not to invest in climate action is also choosing to spend more on climate adaptation.
Here are a few ways climate change is already increasing the cost of living:
- Higher insurance costs from more frequent and severe storms
- Higher energy use during longer and hotter summers
- Higher electricity rates tied to storm recovery and grid upgrades
- Higher government spending and taxpayer-funded disaster recovery costs
The real debate is not whether climate change costs money. Americans are already paying for it. The question is where we want those costs to go. Should we invest more in climate action to help reduce future climate adaptation costs, or continue paying growing recovery and adaptation expenses in everyday life?
How Climate Change Is Increasing Insurance Costs
There is one industry that closely tracks the financial impact of natural disasters: insurance. Insurance companies are focused on assessing risk, estimating damages, and collecting enough revenue to cover losses and remain financially stable.
Comparing the 20-year periods 1980–1999 and 2000–2019, climate-related disasters increased 83% globally from 3,656 events to 6,681 events. The average time between billion-dollar disasters dropped from 82 days during the 1980s to 16 days during the last 10 years, and in 2025 the average time between disasters fell to just 10 days. (6)
According to the reinsurance firm Munich Re, total economic losses from natural disasters in 2024 exceeded $320 billion globally, nearly 40% higher than the decade-long annual average. Average annual inflation-adjusted costs more than quadrupled from $22.6 billion per year in the 1980s to $102 billion per year in the 2010s. Costs increased further to an average of $153.2 billion annually during 2020–2024, representing another 50% increase over the 2010s. (6)
In the United States, billion-dollar weather and climate disasters have also increased significantly. The average number of billion-dollar disasters per year has grown from roughly three annually during the 1980s to 19 annually over the last decade. In 2023 and 2024, the U.S. recorded 28 and 27 billion-dollar disasters respectively, both setting new records. (6)
The growing impact of climate change is one reason insurance costs continue to rise. “There are two things that drive insurance loss costs, which is the frequency of events and how much they cost,” said Robert Passmore, assistant vice president of personal lines at the Property Casualty Insurers Association of America. “So, as these events become more frequent, that’s definitely going to have an impact.” (8)
After adjusting for inflation, insurance costs have steadily increased over time. From 2000 to 2020, insurance costs consistently grew faster than the Consumer Price Index due to rising rebuilding costs and weather-related losses.(3) Between 2020 and 2023 alone, the average home insurance premium increased from $75 to $360 due to climate change impacts, with disaster-prone regions experiencing especially steep increases.(1) Since 2015, homeowners in some regions affected by more extreme weather have seen home insurance costs increased by nearly 57%.(1) Some insurers have also limited or stopped offering coverage in high-risk areas.(7)
For many families, rising insurance costs are no longer occasional financial burdens. They are becoming recurring monthly expenses tied directly to growing climate risk.
How Rising Temperatures Increase Household Energy Costs

The financial impacts of climate change extend beyond insurance. Rising temperatures are also changing how much energy Americans use and how utilities plan for future electricity demand.
Between 1950 and 2010, per capita electricity use increased 10-fold, though usage has flattened or slightly declined since 2012 due to more efficient appliances and LED lighting. (3) A significant share of increased energy demand comes from cooling needs associated with higher temperatures.
Over the last 20 years, the United States has experienced increasing Cooling Degree Days (CDD) and decreasing Heating Degree Days (HDD). Nearly all counties have become warmer over the past three decades, with some areas experiencing several hundred additional cooling degree days, equivalent to roughly one additional degree of warmth on most days. (1) This trend reflects a warming climate where air conditioning demand is increasing while heating demand generally declines. (4)
As temperatures continue rising, households are expected to spend more on cooling than they save on heating. The U.S. Energy Information Administration (EIA) projects that by 2050, national Heating Degree Days will be 11% lower while Cooling Degree Days will be 28% higher than 2021 levels. Cooling demand is projected to rise 2.5 times faster than heating demand declines. (5)
These projections come from energy and infrastructure experts planning for future electricity demand and grid capacity needs. Utilities and grid operators are already preparing for higher peak summer electricity loads caused by rising temperatures. (5)
Longer and hotter summers also affect how homes and buildings are designed. Buildings constructed for past climate conditions may require upgrades such as larger air conditioning systems, stronger insulation, and improved ventilation to remain comfortable and energy efficient in the future. (10)
For many households, this means higher monthly utility bills and potentially higher long-term home improvement costs as temperatures continue to rise.
How Climate Change Affects Electricity Rates
On an inflation-adjusted basis, average U.S. residential electricity rates are slightly lower today than they were 50 years ago. (2) However, climate-related damage to utility infrastructure is creating new upward pressure on electricity costs.
Electric utilities rely heavily on above-ground poles, wires, transformers, and substations that can be damaged by hurricanes, storms, floods, and wildfires. Repairing and upgrading this infrastructure often requires substantial investment.
As a result, utilities are increasing electricity rates in response to wildfire and hurricane events to fund infrastructure repairs and future mitigation efforts. (1) The average cumulative increase in per-household electricity expenditures due to climate-related price changes is approximately $30. (1)
While this increase may appear modest today, utility costs are expected to rise further as climate-related infrastructure damage becomes more frequent and severe.
How Climate Disasters Increase Government Spending and Taxes
Extreme weather events also damage public infrastructure, including roads, schools, bridges, airports, water systems, and emergency services infrastructure. Recovery and rebuilding costs are often funded through taxpayer dollars at the federal, state, and local levels.
The average annual government cost tied to climate-related disaster recovery is estimated at nearly $142 per household. (1) States that frequently experience hurricanes, wildfires, tornadoes, or flooding can face even higher public recovery costs.
These expenses affect taxpayers whether they personally experience a disaster or not. Climate-related recovery spending can increase pressure on public budgets, emergency management systems, and infrastructure funding nationwide.
Reducing Climate Costs Through Climate Action
While this article focuses on the growing financial costs associated with climate change, the issue is not only about money for many people. It is also about recognizing our environmental impact and taking responsibility for reducing it in order to help preserve a healthy planet for future generations.
While individuals alone cannot solve climate change, collective action can help reduce future climate adaptation costs over time.
For those interested in taking action, there are three important steps:
- Estimate your carbon footprint to better understand the emissions connected to your lifestyle and activities.
- Create a plan to gradually reduce emissions through energy efficiency, cleaner technologies, and more sustainable choices.
- Address remaining emissions by supporting verified carbon reduction projects through carbon credits.
Carbon credits are one of the most cost-effective tools available for climate action because they help fund projects that generate verified emission reductions at scale. Supporting global emission reduction efforts can help reduce the long-term impacts and costs associated with climate change.
Visit Terrapass to learn more about carbon footprints, carbon credits, and climate action solutions.
The post How Climate Change Is Raising the Cost of Living appeared first on Terrapass.
Carbon Footprint
Carbon credit project stewardship: what happens after credit issuance
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