Publications
Browse through our publications, from reports and briefings to insights and more.
Aviation and the EU ETS: key questions answered
As the EU is weighing extending its ETS to international flights, this FAQ explains what is at play.
Read 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
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.
18 June 2026
Why we need the economic element in the IMO Net-Zero Framework
The economic element in the IMO Net-Zero Framework is critical to funding green fuels and ensuring a just transition for global shipping.
Read more
18 June 2026
Sustainable agriculture and equitable food systems transformation
Even without fossil fuels, today's food system would still make 1.5°C unattainable – yet sustainable agriculture receives only a fraction of the climate finance it needs.
Read more
15 June 2026
OG eyes new legal action in agriculture and heavy-duty vehicles
Legal Director David Kay reveals how OG is expanding its legal strategy into agriculture and heavy-duty vehicles.
Read more
26 May 2026
Ireland faces legal risks over Dublin airport passenger cap lift
Ireland could face climate and human rights litigation over plans to remove Dublin Airport’s passenger cap.
Read more
26 May 2026
The UK’s agricultural methane regulatory gap and legal risks
The UK's lack of agricultural methane rules exposes the Government to rising legal risks.
Read more
26 May 2026
The legal risks of removing the passenger cap at Dublin Airport
Bypassing climate laws to lift Dublin Airport's cap exposes Ireland to major legal risks.
Read more
20 May 2026
It’s time to follow the science on aviation emissions
The EU is deciding right now whether or not to include departing flights in the ETS again. The law, economics and science are all crystally clear in favour of it. It is just the politics that are hard.
Read more
18 May 2026
International Emissions Trading System and climate finance
Expanding the EU ETS to include international aviation and shipping can support an accelerated, just and equitable decarbonisation.
Read more
11 May 2026
How to contact your MEP
If you want to influence EU decisions, contacting your MEP is a good place to start. This guide explains how to do it, what to write, and how to have the most impact.
Read more
1 May 2026
Policy guide: the EU ETS & international aviation emissions
The EU has lost €26bn in revenue by exempting international flights from the ETS. Now is the time to end this "free pass" and make long-haul aviation pay for its climate impact.
Read more
28 April 2026
Truck manufacturers’ legal intervention undermines climate commitments
Major truck manufacturers are supporting efforts to dismantle a cornerstone of US climate law, a move that could carry legal risks in the UK and EU.
Read more
23 April 2026
Japan’s MEPC 84 submission: risks to IMO’s Net-Zero Framework
Japan’s submission to MEPC 84 proposes options that could drastically weaken the IMO’s Net-Zero Framework (NZF).
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.
