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Letter on carbon: Has the EU ETS come of age?
The launch of the bloc’s emissions trading system in 2005 was a pioneering step, but as the scheme hits 21 its impact as a driver of decarbonisation is still open to debate
Letter from London: Occidental’s oil-led defence of DAC
Company warns against potential withdrawal of federal funding for emerging technology as it eyes key role for CO₂ in boosting both conventional and shale oil recovery in US
Nigeria bids to unlock carbon market billions
Africa’s most populous nation puts cap-and-trade and voluntary markets at the centre of its emerging strategy to achieve net zero by 2060
Colombia sets the voluntary carbon standard
Andean country has become a leading destination for voluntary carbon credit investment, but challenges remain
Letter on carbon: Meet America’s first CCS major
Deal with Calpine shows oil and gas major ExxonMobil has no intention of curbing its CCS ambitions, despite US policy risks and broader scepticism over the energy transition
CCS costs surge as trade war rattles developers
Volatile tariffs add new risks for a sector already struggling to achieve economies of scale
US renewables receive unfair advantage
State administrations are using a flawed metric to justify green energy projects
Occidental secures EPA backing for DAC storage
STRATOS project in Texas granted Class IV permits despite deep uncertainty over Trump administration’s readiness to support carbon management tech
India’s carbon market challenge
Launch of credit trading scheme likely to slip into 2026 as government grapples with complex market design challenges
Southeast Asia unlocks its carbon trading potential
Governments working at pace to create compliance and voluntary markets and carbon tax regimes, with Indonesia, Malaysia, Singapore among the frontrunners
Washington scheme launched in February
US Markets
Killian Staines
28 June 2023
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Washington carbon prices surge above California

Prices in the newest US regional emissions trading scheme spike above more established California market on the back of more ambitious reduction target

Carbon allowances in the new Washington ‘cap and invest’ market are trading at a huge premium to the equivalent market in California, largely due to a more ambitious emissions reduction target. But with California regulators planning to raise their targets, prices could begin to converge in 2025. And a link between the systems could be on the cards for 2027. Washington carbon allowances were auctioned at around $56/t at the end of May in the second quarterly auction since the market launched in February. The equivalent quarterly auction in the joint California-Quebec market cleared at $30.33/t. December 2023 allowances are trading “in the low to mid-$60s” on the secondary market in Washingto

Also in this section
Letter on carbon: Has the EU ETS come of age?
28 November 2025
The launch of the bloc’s emissions trading system in 2005 was a pioneering step, but as the scheme hits 21 its impact as a driver of decarbonisation is still open to debate
Can Oxy’s integrated CO₂ approach set a new benchmark for transition-era oil companies?
18 November 2025
Vicki Hollub, president and CEO of Occidental, has been selected as the 2026 recipient of the Dewhurst Award, the highest honour bestowed by WPC Energy. The Dewhurst Award celebrates exceptional leadership, groundbreaking innovation and a lifetime of significant achievements in sup-port of the development and advancement of the energy industry.
Letter from London: Show me the carbon
11 November 2025
Transition policies must recognise that significant industrial demand for carbon will continue even as economies hit net zero
Letter from Europe: Western retreat raises doubts over climate leadership
Opinion
6 November 2025
After years of pursuing ideologically driven climate leadership, Western powers are now stepping back under mounting political pressure and rising populist opposition—prompting concern essential climate action could be sidelined

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