Publications
Browse through our publications, from reports and briefings to insights and 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.
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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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23 April 2026
Reverse auction mechanisms: exploring their effectiveness
Find out why a reverse auction mechanism is better suited to support the implementation of the NZF.
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22 April 2026
Advertising LNG as “sustainable”: legal risks for the financial sector
Financial actors face rising legal risk when promoting fossil LNG as a “sustainable” shipping fuel amid tightening regulatory scrutiny.
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21 April 2026
Contrail avoidance in the EU: a quick climate win for aviation
Aviation’s non-CO2 impacts, including contrails, can be twice as damaging as CO2 in the short term, yet remain largely unaddressed in EU policy.
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16 April 2026
IMO negotiation briefing: April 2026
Our analysis of the high stakes at IMO's ISWG21 and MEPC84, from fuel standards to an equitable transition.
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14 April 2026
EU must speak with one voice on Net Zero Framework
Legal opinion underscores need for unity amongst EU Member States in adopting Net Zero Framework positioning.
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13 April 2026
Global shipping 2024: mega profits and micro taxes
The biggest shipping companies hit near-record profits in 2024 while continuing to massively underpay tax.
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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.
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9 April 2026
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 March 2026
Tacit vs. explicit acceptance: the IMO’s Net-Zero Framework
Tacit or explicit acceptance could determine whether the IMO’s Net-Zero Framework enters into force swiftly or faces years of delay.
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2 March 2026
How airlines can be competitive and reach climate goals
There’s a simple solution: bring back the ETS on international flights.
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23 February 2026
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.
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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.
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