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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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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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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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.
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.
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20 October 2026
Attempt to weaken the IMO Net-Zero Framework
How Japan’s IMO submission risks weakening the Net-Zero Fund and leaving climate-vulnerable countries behind.
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20 October 2026
Japan’s flawed shipping proposal leaves developing countries adrift
Opportunity Green warns that Japan’s IMO proposal hands control of maritime finance to private companies, leaving climate-vulnerable nations adrift.
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19 October 2026
Court ruling opens door for stronger action on aviation’s climate impacts
Europe’s top court confirms airlines have no automatic rights to historical slots when legal airport caps exist.
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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.
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12 October 2026
Technologies related to climate change and human rights
Exploring the human rights impacts of climate technologies and transitional fuels across shipping, aviation, transport and agriculture.
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30 September 2026
EU Taxonomy ruling on aviation and shipping: what you need to know
This FAQ explains why we challenged the EU Taxonomy’s aviation and shipping criteria, what the Court decided and what happens next.
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23 September 2026
How the EU Taxonomy has (fossil) fuelled aviation
Over 50% of airline capital expenditure was classified as Taxonomy-aligned in 2025, yet almost all of it fuels fossil-fuel aircraft.
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17 September 2026
Dublin Airport to exhaust its carbon budget by 2034
Dublin Airport is on course to exhaust its carbon budget 16 years early, just as the government moves to remove the brakes on further airport expansion.
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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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