ISO 20121: The Standard for Sustainable Event
ISO 20121 is a voluntary international standard for sustainable event management, created by the International Organization for Standardization. Rather than being a checklist of green actions, it utilizes a transformative framework that places sustainability at the heart of event management, inviting a creative yet systematic approach to making a positive, lasting impact.
Crucially, the standard doesn't certify an event itself, it certifies the management system behind it. ISO 20121 is a specification relating to a management system of an event or group of events; an event alone cannot claim compliance, and claims of conformity will differ depending on the scope of the management system, which could cover all events within an organisation or be centred around a single event.
ISO 20121 has a distinctly British pedigree. The original 2012 version emerged from British Standard BS 8901, developed in preparation for the London 2012 Olympic Games, which pioneered systematic event sustainability management and demonstrated that major events could deliver world-class experiences while minimizing environmental footprint, maximizing social benefits, and creating positive economic legacies.
The underlying problem the standard addresses is universal: every event, from a village barbecue to a major sporting event like the Olympics, will have economic, social and environmental impacts, putting water and energy resources under pressure, generating significant waste and carbon emissions, and sometimes straining local communities. By the mid-2000s, practitioners within the events industry were becoming aware of the need for more sustainable practices, which set the stage for a formal international standard.
Like other ISO management-system standards, ISO 20121 follows a continuous-improvement cycle. It's based on the Plan-Do-Check-Act methodology, providing a systematic framework for the integration of sustainable management practices to reduce impact related to economic, environmental and social aspects.
Its scope is broad by design: the standard is applicable to different categories of structures, such as those involved in organizing events, service providers for these events, as well as the management system relating to the organization of a single event. It also reaches deep into the supply chain, addressing all stages of an event's supply chain and including both monitoring and measuring guidelines.
Importantly, it wasn't drafted in isolation. The standard was developed with the input of a variety of stakeholders, including representatives from the event industry, ensuring it is as practical and useful as possible.
To achieve conformity, organisations must build a genuine Event Sustainability Management System, not just a policy document. Key requirements include identifying and assessing sustainability risks associated with event planning and implementation that could interfere with sustainability regulations and policies. Organisations must also develop comprehensive policies and procedures aligned with ISO 20121 to support sustainability throughout the event management process for every event, and clearly define roles and responsibilities related to sustainability within the organisation to support effective implementation of sustainable practices for events, including providing training. This accountability extends to suppliers and contractors, with guidance emphasising the need to define roles and responsibilities for staff, contractors and suppliers.
Conformity doesn't have to mean formal third-party certification, either, the standard is flexible about how compliance is demonstrated. It offers various conformity demonstration methods, including self-declaration, supplier validation, and third-party certification, making sustainable practices accessible to organizations of any size.
The standard was significantly updated in 2024, timed deliberately ahead of a major global event. The international standard for sustainable event management was first published in 2012 and recently updated in February 2024, just before the Paris Olympics, in response to the growing demand for environmentally responsible practices in the event industry.
The revision wasn't cosmetic. The 2024 revision defines the requirements for a sustainability management system for events, representing a more systematic and structured approach leading to continual improvement in event sustainability. Substantively, it highlights new focuses on human and children's rights, along with event legacies, showcasing sustainability's transformative role in the industry, and more broadly enriches the standard with a stronger emphasis on social legacies, inclusivity, and the diverse means of demonstrating compliance, fostering a more comprehensive and accessible approach to sustainable event management.
The standard's applicability is deliberately wide-ranging: it applies equally to small community gatherings, corporate conferences, music festivals, sporting competitions, and mega-events such as the Olympic Games, FIFA World Cup, and United Nations climate conferences.
In the UK, adoption has been notable in media and events. For example, Haymarket was among the first media companies in the UK to achieve this international standard for sustainable event management, using an accredited method to self-audit its live events to ensure ongoing enhancements in efficiency and performance.
At the global stage, the standard has seen a surge in adoption particularly among luxury brands and large-scale events like the Paris Olympics, which have been renewing their certification since London 2012, as these organisations recognise the importance of demonstrating their commitment to sustainability.
The commercial and reputational case for certification is well established among certification bodies and consultancies. Benefits include cost efficiency through cutting costs via improved energy and waste management, and risk mitigation, since ISO 20121 equips organisations to optimize resources, reduce costs and mitigate risks to the environment and local community. It also builds stakeholder confidence, giving clients and potential clients confidence in an organization's ability to manage its sustainability performance throughout the lifecycle of an event. Other benefits include better supplier and service provider relationships regarding sustainability performance, increased tender capabilities, and easy integration with other management system standards such as ISO 9001 and ISO 14001.
Certification is carried out by accredited third-party bodies such as BSI, NQA, SGS and TÜV rather than ISO itself. In the UK, accreditation integrity matters: UKAS audits certification bodies such as ISOQAR, BSI, NQA and QEC to ensure compliance, and businesses are cautioned that many are sold cheaper quotes by certification bodies or consultancies without UKAS accreditation, which can risk losing contracts if clients discover the system isn't validly accredited, potentially forcing recertification with a UKAS-accredited body.
Once certified, the standard involves an ongoing surveillance cycle. Typically, a certificate is issued valid for three years, marking the organisation's commitment to sustainable event management, with annual audits conducted to ensure ongoing compliance, involving a review of the management system's performance and adjustments to maintain sustainability practices effectively. Before expiry, a renewal audit conducted in the final year involves a comprehensive review to ensure continued adherence, allowing the organisation to maintain certification status for another three years.
Sustainability in events has shifted from a nice-to-have to a baseline expectation. As one industry source puts it plainly, sustainable events are no longer a bonus, they're expected. With UK and international regulation on environmental impact tightening, ISO 20121 helps organizations stay ahead of these regulatory changes, ensuring compliance with local and international standards.
In short, ISO 20121 is a globally recognised, UK-originated framework rooted in London 2012 that turns event sustainability from a vague aspiration into an auditable management system, covering environmental impact, social responsibility, and economic accountability across an event's entire lifecycle and supply chain. The 2024 revision, refreshed ahead of the Paris Olympics, sharpened its focus on legacy, inclusivity, and human rights, cementing its position as the leading standard in this space.
Crucially, the standard doesn't certify an event itself, it certifies the management system behind it. ISO 20121 is a specification relating to a management system of an event or group of events; an event alone cannot claim compliance, and claims of conformity will differ depending on the scope of the management system, which could cover all events within an organisation or be centred around a single event.
ISO 20121 has a distinctly British pedigree. The original 2012 version emerged from British Standard BS 8901, developed in preparation for the London 2012 Olympic Games, which pioneered systematic event sustainability management and demonstrated that major events could deliver world-class experiences while minimizing environmental footprint, maximizing social benefits, and creating positive economic legacies.
The underlying problem the standard addresses is universal: every event, from a village barbecue to a major sporting event like the Olympics, will have economic, social and environmental impacts, putting water and energy resources under pressure, generating significant waste and carbon emissions, and sometimes straining local communities. By the mid-2000s, practitioners within the events industry were becoming aware of the need for more sustainable practices, which set the stage for a formal international standard.
Like other ISO management-system standards, ISO 20121 follows a continuous-improvement cycle. It's based on the Plan-Do-Check-Act methodology, providing a systematic framework for the integration of sustainable management practices to reduce impact related to economic, environmental and social aspects.
Its scope is broad by design: the standard is applicable to different categories of structures, such as those involved in organizing events, service providers for these events, as well as the management system relating to the organization of a single event. It also reaches deep into the supply chain, addressing all stages of an event's supply chain and including both monitoring and measuring guidelines.
Importantly, it wasn't drafted in isolation. The standard was developed with the input of a variety of stakeholders, including representatives from the event industry, ensuring it is as practical and useful as possible.
To achieve conformity, organisations must build a genuine Event Sustainability Management System, not just a policy document. Key requirements include identifying and assessing sustainability risks associated with event planning and implementation that could interfere with sustainability regulations and policies. Organisations must also develop comprehensive policies and procedures aligned with ISO 20121 to support sustainability throughout the event management process for every event, and clearly define roles and responsibilities related to sustainability within the organisation to support effective implementation of sustainable practices for events, including providing training. This accountability extends to suppliers and contractors, with guidance emphasising the need to define roles and responsibilities for staff, contractors and suppliers.
Conformity doesn't have to mean formal third-party certification, either, the standard is flexible about how compliance is demonstrated. It offers various conformity demonstration methods, including self-declaration, supplier validation, and third-party certification, making sustainable practices accessible to organizations of any size.
The standard was significantly updated in 2024, timed deliberately ahead of a major global event. The international standard for sustainable event management was first published in 2012 and recently updated in February 2024, just before the Paris Olympics, in response to the growing demand for environmentally responsible practices in the event industry.
The revision wasn't cosmetic. The 2024 revision defines the requirements for a sustainability management system for events, representing a more systematic and structured approach leading to continual improvement in event sustainability. Substantively, it highlights new focuses on human and children's rights, along with event legacies, showcasing sustainability's transformative role in the industry, and more broadly enriches the standard with a stronger emphasis on social legacies, inclusivity, and the diverse means of demonstrating compliance, fostering a more comprehensive and accessible approach to sustainable event management.
The standard's applicability is deliberately wide-ranging: it applies equally to small community gatherings, corporate conferences, music festivals, sporting competitions, and mega-events such as the Olympic Games, FIFA World Cup, and United Nations climate conferences.
In the UK, adoption has been notable in media and events. For example, Haymarket was among the first media companies in the UK to achieve this international standard for sustainable event management, using an accredited method to self-audit its live events to ensure ongoing enhancements in efficiency and performance.
At the global stage, the standard has seen a surge in adoption particularly among luxury brands and large-scale events like the Paris Olympics, which have been renewing their certification since London 2012, as these organisations recognise the importance of demonstrating their commitment to sustainability.
The commercial and reputational case for certification is well established among certification bodies and consultancies. Benefits include cost efficiency through cutting costs via improved energy and waste management, and risk mitigation, since ISO 20121 equips organisations to optimize resources, reduce costs and mitigate risks to the environment and local community. It also builds stakeholder confidence, giving clients and potential clients confidence in an organization's ability to manage its sustainability performance throughout the lifecycle of an event. Other benefits include better supplier and service provider relationships regarding sustainability performance, increased tender capabilities, and easy integration with other management system standards such as ISO 9001 and ISO 14001.
Certification is carried out by accredited third-party bodies such as BSI, NQA, SGS and TÜV rather than ISO itself. In the UK, accreditation integrity matters: UKAS audits certification bodies such as ISOQAR, BSI, NQA and QEC to ensure compliance, and businesses are cautioned that many are sold cheaper quotes by certification bodies or consultancies without UKAS accreditation, which can risk losing contracts if clients discover the system isn't validly accredited, potentially forcing recertification with a UKAS-accredited body.
Once certified, the standard involves an ongoing surveillance cycle. Typically, a certificate is issued valid for three years, marking the organisation's commitment to sustainable event management, with annual audits conducted to ensure ongoing compliance, involving a review of the management system's performance and adjustments to maintain sustainability practices effectively. Before expiry, a renewal audit conducted in the final year involves a comprehensive review to ensure continued adherence, allowing the organisation to maintain certification status for another three years.
Sustainability in events has shifted from a nice-to-have to a baseline expectation. As one industry source puts it plainly, sustainable events are no longer a bonus, they're expected. With UK and international regulation on environmental impact tightening, ISO 20121 helps organizations stay ahead of these regulatory changes, ensuring compliance with local and international standards.
In short, ISO 20121 is a globally recognised, UK-originated framework rooted in London 2012 that turns event sustainability from a vague aspiration into an auditable management system, covering environmental impact, social responsibility, and economic accountability across an event's entire lifecycle and supply chain. The 2024 revision, refreshed ahead of the Paris Olympics, sharpened its focus on legacy, inclusivity, and human rights, cementing its position as the leading standard in this space.
