Greener Games? Carbon-Neutral and 'Climate Positive' Claims at the Olympics

Timeline

1. 4 Mar 2020The IOC Executive Board announces that Olympic Games will be 'climate positive' from 2030 and plans an Olympic Forest.
2. Mar 2021Paris 2024 publishes a climate strategy with a 1.5 MtCO2e carbon budget.
3. 2021–2022The IOC says the Olympic Forest in Mali and Senegal will compensate more than its residual emissions; scientists question tree-planting offsets.
4. 2023Paris 2024 promotes 'the first Games with a positive contribution to the climate,' a claim it later drops.
5. Apr 2024Carbon Market Watch and Éclaircies publish a report criticizing Paris 2024's climate claims and transparency.
6. Jul–Sep 2024The Paris Olympic and Paralympic Games are held.
7. 2025Paris 2024's post-Games sustainability report puts the final footprint at 1.595 MtCO2e, 54.6% below the London–Rio average.

The ethical issues

• Whether carbon offsets can justify claims of neutrality or a positive climate impact.
• Honesty and consistency in environmental marketing.
• Comparing footprints calculated with different methods.
• Responsibility for emissions an organizer cannot control, such as spectator travel.
• Whether mega-events can be compatible with climate goals.

Stakeholders

Stakeholder	Interests & obligations
International Olympic Committee	The reputation and future viability of the Games.
Paris 2024 organizing committee	Delivering and promoting a lower-carbon Games.
Spectators and the public	Accurate information about environmental impact.
Athletes	Safe conditions in a warming climate and a credible Olympic Movement.
Communities near offset projects	Lasting benefits from projects in their areas.
Climate advocates and researchers	Transparent methods and real emissions cuts.
Sponsors	Association with a sustainable brand.

The case

Few organizations have tied their brand as tightly to ideals as the Olympic Movement. In the 2020s it added a new one: climate leadership. The International Olympic Committee (IOC) promised that Olympic Games would be “climate positive” from 2030, and Paris 2024 pledged to cut its carbon footprint in half compared with London 2012. Along the way, the words used to describe those efforts kept changing: from “carbon neutral” to “a positive contribution to the climate” to something more modest. Critics called this greenwashing. Supporters pointed to real reductions. The case asks what honest climate communication looks like when an event cannot avoid emitting more than a million tonnes of carbon dioxide.

Background

On 4 March 2020 the IOC Executive Board announced that the Olympic Games and Olympic Winter Games would be “climate positive” from 2030. At the time, all upcoming Games had committed to being carbon neutral, and organizers were required to reduce and compensate emissions linked directly to their operations. From 2030, organizing committees would also have to “minimise and compensate their direct, as well as indirect, carbon emissions” and “implement lasting zero-carbon solutions.” The IOC defined “climate positive” as meaning that “the carbon savings they create will exceed the potential negative impacts of their operations,” and said the requirements would be written into the Host Contract.^[1]

The same announcement introduced an “Olympic Forest,” a contribution to Africa’s Great Green Wall initiative, to help the IOC become a climate-positive organization. It also noted that Paris 2024 had reduced its estimated footprint to 1.5 million tonnes, compared with London 2012’s 3.3 million.^[1]

What happened

The Olympic Forest. By 2022 the IOC said the Forest would be planted across 90 villages in Mali and Senegal and would absorb an estimated 200,000 tonnes of carbon dioxide, compensating for more than 100% of the committee’s residual emissions. Scientists interviewed by The Independent were cautious. One forest ecologist called the project a “quick fix at best,” noting that “planting trees will not stop global warming, only decarbonising the economy will,” and that the planting schedule was very short. Another researcher said large-scale planting is likely to become a net carbon sink only “many decades into the future.” The IOC said the Forest came on top of a target to cut its own emissions by 45% by the end of the decade.^[6] The IOC now reports 437,000 native trees planted over 1,570 hectares across more than 120 villages, and 191,000 Plan Vivo certificates delivered, corresponding to the long-term sequestration of 191,000 tonnes of CO2.^[2]

Paris 2024’s strategy. Paris’s organizing committee chief, Tony Estanguet, said: “We’ve promised to cut the carbon footprint in half from the London Olympics in 2012.” The plan relied on existing and temporary venues, with only two new sports facilities, an aquatic center and a climbing venue, plus the Athletes’ and Media Villages. It also included low-carbon construction targets, 100% renewable electricity, more plant-based food and venues close together.^[5]

Shifting claims. In April 2024, Carbon Market Watch and the consultancy Éclaircies published an assessment of the Paris strategy. They called it “a decent attempt at greening the games” but said it “lacks detailed methodologies and comprehensive monitoring, and is not clearly communicated.” The report traced how the headline claim had changed. It began with a carbon-neutrality ambition, was amended to “the first Games with a positive impact on the climate,” and later became “Olympic and Paralympic Games in tune with society and its realities.” The authors called the neutrality and “climate positive” descriptions “misleading claims” that “were eventually dropped.” But older pages and technical documents had not been updated. Across three technical documents, “carbon neutral” still appeared 27 times.^[4]

The report also questioned the numbers. It welcomed the setting of a carbon budget but said there was no explanation of why 1.5 million tonnes was chosen or whether it was aligned with the Paris Agreement. The assumptions behind the calculation were “not described in any detail,” and no public monitoring of emissions over time had been published. It warned that “comparing carbon footprints across events calculated assuming differing methodologies is a flawed basis for scientific analysis,” and noted that the IOC’s own methodology discourages terms such as “carbon neutral.” It also criticized “carbon neutral purchases” claims and the absence of climate criteria in choosing sponsors. Its broader conclusion was that “no Olympic Games can truly be compatible with the Paris Agreement’s objectives unless their overall operations are fundamentally reformed.”^[4]

Writing in Scientific American as the Games opened, sport ecologist Madeleine Orr put it more bluntly: “There is no version of a sustainable Games as of yet.”^[5]

The rules and governance

The IOC sets climate requirements through Host Contracts, and organizers report their own footprints. Neither the 2020 announcement nor the Paris reports describe independent enforcement of climate claims. That leaves the honesty of communication largely to organizers, the IOC and outside watchdogs.^[1][4]

Aftermath

Paris 2024’s post-Games sustainability report put the final footprint at 1.595 million tonnes of CO2 equivalent. That was slightly above the 1.5 million tonnes budget announced earlier, but the organizers said they had met their goal by cutting emissions 54.6% compared with the average of the London and Rio Games. Travel by people attending the Games, especially spectators, made up 53% of the total, a category where the organizers said uncertainty was highest and they had few levers. Permanent construction accounted for 29% and operations for 18%. In addition, Paris 2024 financed carbon sequestration or avoidance projects totaling 1.59 million tonnes, “equivalent to the emissions of the Games that could not be avoided.”^[3]

The core dilemma

Paris 2024 appears to have produced a much smaller footprint than recent Summer Games, though comparisons across methods are disputed. Yet the Games still emitted roughly 1.6 million tonnes, and the language used to describe them promised more than the record supports. Should sport celebrate real but partial progress, or does overstating it undermine the trust that climate action depends on?

Competing values

• Ambition vs. accuracy: inspiring goals against claims that can be verified.
• Progress vs. sufficiency: praising cuts against asking whether they are enough.
• Brand vs. transparency: a clean image against publishing messy methods.
• Control vs. responsibility: emissions organizers can manage against those, such as spectator travel, they cannot.

Strongest arguments

The Olympics deserve credit. Paris cut its footprint sharply by reusing venues, using renewable power and building with lower-carbon methods. It set a budget in advance and reported against it. Dropping misleading claims shows responsiveness to criticism.^[3][4]

The claims were greenwashing. Words like “neutral” and “climate positive” imply an event has no net harm. Offsets, especially young trees, cannot deliver that promise on the timescale implied, and inconsistent communication confuses the public.^[4][6]

The format is the problem. Even a well-run Games emitted about 1.6 million tonnes, more than half of it from travel by people attending.^[3] Communication choices matter less than the decision to hold a mega-event at all.^[4]

Applying the frameworks

Kantian

A Kantian asks whether the IOC and organizers treated the public as rational agents. Claims designed to give an impression the speaker cannot support use audiences as a means to reputational ends. The maxim “describe offsets as neutrality when it helps the brand” could not be universalized without destroying the meaning of climate claims.

Utilitarian

A utilitarian weighs consequences. Ambitious language may spur innovation and inspire other events to cut emissions. But if it breeds cynicism or delays deeper reforms, the net effect may be harmful. The actual reduction in tonnes matters more than the slogan.

Virtue

Virtue ethics asks what an honest, humble institution would do. It would claim what it achieved, name what it did not, and fix outdated messages promptly. Overclaiming suggests vanity; refusing to act would show indifference. The golden mean lies in candid, specific communication.

Walk it through: the Simple Decision Model

1. Spot the issue. You lead communications for a future Games. Stakeholders include the IOC, sponsors, spectators, athletes, offset-project communities and climate researchers.
2. Gather facts. What is the full footprint, how was it calculated, which emissions are avoided, and what credits are purchased? Beware of confirmation bias toward the most flattering figures.
3. Test options. Claim “carbon neutral”; claim “climate positive”; describe a measured reduction and separate contributions to climate projects; or say little.
4. Check codes and law. Review the Host Contract, the IOC’s carbon footprint methodology and consumer-protection rules on environmental claims.
5. Decide and document. Choose wording that matches evidence and publish the methods and credit details behind it.
6. Communicate and follow up. Update all materials when claims change, report final results, and invite independent review.

What’s settled and what’s contested

Settled

• The IOC announced in 2020 that Games would be “climate positive” from 2030.
• Paris 2024’s headline climate claims changed over time, and “positive impact” language was dropped.
• Paris reported a final footprint of about 1.6 million tonnes and financed projects of an equal amount.

Contested

• Whether comparisons with London and Rio are methodologically sound.
• Whether offsets, including tree planting, can support claims of neutrality or positive impact.
• Whether any mega-event can be made compatible with climate goals.

Why this case matters

Sport sells ideals, and climate claims are now part of the pitch. This case shows how good-faith progress can be undermined by overclaiming. Compare it with the 2022 Qatar World Cup’s labor record and Saudi Arabia’s 2034 World Cup award, which raise related questions about how mega-events manage their image.

Key terms

Authenticity vs. PR spin

The tension between communicating truthfully and managing perception. Spin may protect a brand short term while eroding trust.

Brand as ethical promise

A brand is more than a logo: it is a promise to stakeholders about values and conduct, and it is broken when actions contradict it.

Framing

How the choice of angle, language and emphasis shapes the way a story is understood.

Trust

The public’s belief that what they are watching is real. Integrity failures are ultimately failures of trust.

Institutional accountability

Structures that make a sport organization explain its decisions and face consequences: clear authority, transparency, appeals, independent oversight and enforcement.

Stakeholders

Everyone with something at stake in a decision: athletes, coaches, parents, officials, fans, employees, sponsors, media, communities and regulators, including the less visible ones.

Definitions from the Ethics Cases glossary.

Discussion questions

1. Is it honest to call an event 'carbon neutral' if it buys credits equal to its emissions? Why or why not?
2. Did Paris 2024 act well by dropping its 'positive impact' claim, or should it have avoided the claim in the first place?
3. Should organizers be accountable for emissions from spectators' travel?
4. How should the IOC define 'climate positive' for future Games?
5. Can a global mega-event ever be sustainable, or should sport change the format itself?

Sources

1. Olympic Games to become "climate positive" from 2030 — ANOC (IOC announcement)
2. Compensating more than 100 per cent of residual emissions — International Olympic Committee
3. Synthèse du rapport post-Jeux durabilité et héritage de Paris 2024 — Paris 2024 (via CNOSF)
4. Going for green: Assessing the climate strategy and communication of the 2024 Paris Olympics — Carbon Market Watch and Éclaircies
5. The Paris Olympics Are a Lesson in Greenwashing — Scientific American
6. Is the International Olympic Committee planting 300,000 new trees in Africa a good idea? — The Independent