UK Withdrawal Completed 2025
The UK completed its withdrawal from the Energy Charter Treaty in 2025 as part of broader energy transition policy. However, the sunset provision protects existing investments until April 2045.
ECT disputes involving UK investments and UK-based investors will continue for decades.
Sunset Provision Mechanics
Qualifying investments made before withdrawal retain treaty protection for twenty years. Experts must analyse whether investments qualify and whether challenged measures occurred during the protected period.
Modernised Treaty and Net Zero
The modernised ECT reflects tension between climate commitments and investor protection. Energy policy changes, subsidy withdrawals, and regulatory reforms remain central to ECT claims.
Expert Evidence in ECT Claims
ECT arbitration requires analysis of regulatory measures, legitimate expectations in the energy sector, and the political context of policy changes. Country and sector specialists are typically required.