Publications
Browse through our publications, from reports and briefings to insights and more.
Improving the EU aviation ETS
The EU ETS review is a rare opportunity to strengthen the aviation ETS. Here’s how the EU can use it to deliver its full potential.
Read 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
16 organisations call for better Sail & Rail service between UK and Ireland
Discover why Opportunity Green and 15 partner organisations are calling on the UK and Irish governments to make Sail & Rail travel easier to find, book and trust.
Read more
Loaded: the legal risks of air pollution caused by Heavy-Duty Vehicles
Diesel trucks produce a disproportionate share of deadly air pollution, exposing governments and manufacturers to growing legal and financial risks.
Read more
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
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 moreAll publications
Filter our publications by topic, type and date.
21 October 2026
Beyond the tailpipe: automakers’ role in driving steel decarbonisation
Automakers can help drive decarbonisation of the steel sector, and legal and regulatory frameworks can support this transition.
Read more
14 October 2026
Deny, delay, deflect – how airlines misrepresent law to avoid climate action
Why airline claims that expanding the EU ETS is illegal fail to hold up under legal scrutiny and settled case law.
Read more
8 September 2026
Contrails in the EU ETS: a proposal with good intentions but no teeth
The EU’s proposed contrail policy rewards forecasts, not action. Here’s why voluntary handouts fail – how an avoidable fee can deliver real action.
Read more
18 August 2026
Renewable data centres: what are the barriers?
We investigate the barriers to building AI data centres powered by completely renewable energy.
Read more
6 August 2026
One year on: what the ICJ’s Advisory Opinion means for climate action
One year after the ICJ's Advisory Opinion, discover how this historic ruling clarified states' legal obligations and how Opportunity Green is using it to drive climate action.
Read more
4 August 2026
5 simple fixes for Sail & Rail travel across the Irish Sea
Five ways that governments and travel operators could help travellers make the switch to Sail & Rail.
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
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
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
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
2 March 2026
How airlines can be competitive and reach climate goals
There’s a simple solution: bring back the ETS on international flights.
Read more
2 February 2026
Will Ireland step up and become Europe’s Climate President?
Why Ireland needs to regulate data centres and aviation to meets its environmental commitments.
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.
