Publications
Browse through our publications, from reports and briefings to insights and more.
Home heating trial risks misleading consumers
Our legal complaint to the CMA, outlining why SGN’s hydrogen heating claims constitute greenwashing and risk delaying the transition to genuine low-carbon heat.
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Data centres must be included in UK’s decarbonisation plans
Briefing calling for mandatory decarbonisation plans for UK data centres to ensure the sector’s rapid growth is compatible with national climate commitments.
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OECD complaint against ArcelorMittal
Legal complaint challenging ArcelorMittal’s green steel claims, highlighting the urgent need for corporate transparency and truthful environmental advertising.
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Closing Ireland’s aviation climate gap
This report examines how Ireland can place climate action at the heart of its leadership while generating significant revenue through introducing a fair air travel levy and expanding the EU Emissions Trading System (EU ETS) to include international flights.
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2 February 2026
Greenwashing complaint against SGN for home heating trial
Our legal complaint about SGN’s hydrogen home heating trial.
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9 December 2025
OECD complaint filed against ArcelorMittal over climate inaction
Our legal complaint against ArcelorMittal over deceptive environmental claims.
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3 December 2025
New aviation solidarity coalition on premium flyers
OG responds to new initiative to tax first- and business- class tickets, and private jets.
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3 November 2025
Report calls for an end to aviation’s free pass on pollution in Ireland
Our report shows that aviation is a “glaring gap” in Ireland’s Climate Action Plan.
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9 October 2025
The IMO must champion ambition and equity in shipping climate talks
The IMO prepares for historic negotiations on the Net-Zero Framework.
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22 September 2025
The International Civil Aviation Organization (ICAO) assembly
The ICAO Assembly is an opportunity for aviation to change course on climate change.
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3 September 2025
ASA rules green claims about LNG on MSC Cruises are likely to mislead
Cruise ticket sellers found to breach advertising rules with misleading LNG adverts.
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16 July 2025
World’s highest court, ICJ, says all states must act to protect the climate
The ICJ clarifies states' international legal obligations to act to prevent climate change.
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16 July 2025
‘Sustainable aviation fuel’ (SAF) claims risk legal action
Why companies may face legal risk by using the term ‘sustainable aviation fuel’.
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30 June 2025
A new global emissions fee for shipping has been agreed
IMO net zero fund must support countries at the frontline of climate change.
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9 June 2025
EU must include international aviation emissions in its Emissions Trading System
Emissions from international flights to be regulated under the EU ETS.
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9 June 2025
States must include international shipping in climate targets at UN Ocean Conference
Ocean protection means including shipping in countries' Paris climate targets.
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