Three ExxonMobil subsidiaries have filed an international arbitration claim against the European Union challenging the carbon capture and storage mandates within the Net Zero Industry Act (NZIA).
Despite both the UK and the EU formally withdrawing from the Energy Charter Treaty (ECT), ExxonMobil is utilizing the treaty’s 20-year “sunset clause,” which preserves investor-state dispute settlement rights until 2045.
Ahead of the November 20 UK-EU summit, trade and climate organizations are urging both parties to sign an inter se agreement to neutralize the sunset clause following seven post-withdrawal ECT claims brought by UK-registered firms.
Three subsidiaries of ExxonMobil , including a United Kingdom-incorporated entity, have initiated international tribunal arbitration against the European Union (EU), challenging the carbon capture and storage (CCS) mandates established under the bloc’s Net Zero Industry Act (NZIA).
Although both the UK and the EU formally exited the Energy Charter Treaty (ECT), the claim relies on the treaty’s 20-year sunset clause, which preserves investment protection and arbitration rights for existing energy assets until 2045.
ExxonMobil is contesting the NZIA’s mandatory CO2 injection capacity obligations imposed on oil and gas producers, characterizing the regulatory framework as driven by ideology rather than logic.
Research compiled by the Trade Justice Movement indicates that ExxonMobil’s filing is one of seven ECT disputes launched by UK-registered entities against European jurisdictions since the UK announced its withdrawal in 2024.
Ahead of the November 20 UK-EU summit, civil society organizations are urging leaders to execute a bilateral inter se agreement to disapply the sunset clause between both jurisdictions – a mechanism legal experts confirm can neutralize future intra-European arbitration exposure without requiring new domestic legislation.
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