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.
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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.
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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.
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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.
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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.
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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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Filter our publications by topic, type and date.
9 September 2026
How EU free allowances drove airline profits, not progress
A new report reveals European airlines received €10.9bn in free carbon allowances that boosted profits rather than driving genuine climate investment.
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9 September 2026
European airlines received €10.9bn in free carbon allowances
New analysis shows that free carbon allowances padded corporate profits rather than driving genuine climate investment.
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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.
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2 September 2026
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.
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1 September 2026
Trade impacts and the IMO Net Zero Framework
Fossil fuel exporting states' false claims that shipping climate action will harm remote economies overlook why inaction could be worse.
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25 August 2026
IMO negotiation briefing: September 2026
Our analysis of submissions to IMO’s ISWG-GHG 22, from carbon pricing to a just and equitable transition.
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18 August 2026
Renewable data centres: what are the barriers?
We investigate the barriers to building AI data centres powered by completely renewable energy.
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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.
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6 August 2026
States urged to protect IMO Net-Zero Framework
New proposals have been tabled that could, in effect, replace the IMO Net-Zero Framework. Opportunity Green calls on governments to protect the Framework.
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5 August 2026
MARPOL amendments: impacts on shipping’s climate transition
Which legal amendments to the IMO's Net-ZeroFramework will deliver 1.5°C?
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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.
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13 July 2026
Stay Grounded x Opportunity Green toolkit: Avenues to challenge airport expansion
A legal toolkit exploring how EU law can help communities challenge airport expansion.
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