Publications
Browse through our publications, from reports and briefings to insights and more.
Heading into the EU Taxonomy hearing: what to expect
Ahead of our hearing, this FAQ explains why we’re facing the European Commission in court and what’s at stake for the EU Taxonomy.
Read 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.
Read more
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.
Read more
OECD complaint against ArcelorMittal
Legal complaint challenging ArcelorMittal’s green steel claims, highlighting the urgent need for corporate transparency and truthful environmental advertising.
Read more
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.
Read moreAll publications
Filter our publications by topic, type and date.
13 April 2026
Biggest global shipping companies make record profits but woefully underpay on tax
10 biggest global shipping companies record US$42.9bn profits – but pay around half global average tax rate.
Read more
13 February 2026
NGOs urge IMO action on ammonia ship waste rules
NGOs call for a precautionary approach to managing toxic ammonia effluent from ammonia-fueled ships.
Read more
2 February 2026
Greenwashing complaint against SGN for home heating trial
Our legal complaint about SGN’s hydrogen home heating trial.
Read more
9 December 2025
OECD complaint filed against ArcelorMittal over climate inaction
Our legal complaint against ArcelorMittal over deceptive environmental claims.
Read more
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.
Read more
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.
Read more
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.
Read more
22 September 2025
The International Civil Aviation Organization (ICAO) assembly
The ICAO Assembly is an opportunity for aviation to change course on climate change.
Read more
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.
Read more
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.
Read more
16 July 2025
‘Sustainable aviation fuel’ (SAF) claims risk legal action
Why companies may face legal risk by using the term ‘sustainable aviation fuel’.
Read more
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.
Read moreStay informed
Get the latest insights and updates on our climate action initiatives by signing up to the OG newsletter.
By signing up, you agree to our privacy policy.
