Independent power producer Vistra said it would shutter seven plants, while Peabody and Arch Resources scrapped a planned JV aimed at cutting production costs.
The goal behind this request is for Crystallex to enforce a $1.4 billion arbitral award against Venezuela, following the 2008 nationalization of its gold mine.
Key polluters, including miners and oil producers, are under increasing pressure from major investors to take more ambitious measures to curb emissions.