Skip to main content

Greening our meetings

Greening our


Facts and figures on the Ozone Secretariat’s emissions impact from meetings, and accelerating UN efforts on environmental governance and training.


Greening the Blue Report 2023 shows UN System’s Progress on Environmental Sustainability

The annual Greening the Blue Report – The UN system’s environmental footprint and efforts to reduce it shows the progress both at the UN system-wide level and entity level of implementing the Strategy for Sustainability Management in the United Nations System 2020-2030, Phase I: Environmental Sustainability in the Area of Management. The 2023 edition of the Greening the Blue Report, which provides 2022 data and was published on 21 December 2023, reveals the UN system’s progress on its environmental sustainability efforts.

Key Facts


In 2022, the UN’s operations and facilities emitted 1.4 million tonnes of CO2eq in total or 4.6 tonnes CO2eq per capita. The UN system-wide greenhouse gas emissions rose by 12 per cent to 1.4 million tonnes CO2eq, compared to 2021. This is lower than pre-COVID19 but likely due to transition from COVID-19 working modalities.

For the Ozone Secretariat specifically, our operations and facilities emitted 522 tonnes CO2eq in total or 29 tonnes CO2eq per capita. If we breakdown our emissions by source for 2022, 97 per cent came from air travel, 2 per cent from other travel, and the remaining 1 per cent came from our facilities.

9 years of climate neutrality

We are also pleased to announce that we are one of UN entities that were climate neutral for 2022, meaning that we offset 100% of our greenhouse gas emissions. This is the 9th year in a row that we are climate neutral.

Waste and water consumption

Around 321 kg/person of waste was generated for the whole UN system in 2022. At the Secretariat, we generated 36 kg/person of waste.The average water consumption by the UN System in 2022, was 49 m3 per UN personnel per year. In comparison, we used around 36 m3 per person last year.

For a more detailed view of what the Ozone Secretariat is doing to reduce its greenhouse gas emissions, read more about our Environmental Management System and see the interactive Key Figures below.

Read the full 2023 Greening the Blue Report here.

What is the Ozone Secretariat doing?

Key Figures: Greenhouse Gas Emissions

Number of personnel

All entity personnel are included in the entity's greenhouse gas emission inventory.

Total GHG emissions, tCO2eq

Waste generated per capita, kg/person

The entity may not report waste data for all its personnel. Please refer to the entity's personnel chart below for more information.

Per capita GHG emissions, tCO2eq/person


Water use, m3

Environmental Performance Indicators

Environmental Management System (EMS)


In order to reduce greenhouse gas emissions from its operations and facilities by 2030, the Ozone Secretariat has developed an environmental management system (EMS) framework to mitigate and reduce its carbon emissions.


Carbon Neutrality Timeline


More information

For more information, please contact our Environmental Sustainability Focal Point, Stephanie Haysmith, and for the full Greening the Blue Report 2023 click here.