Russian gas flows to Europe via Ukraine fell by a quarter on Wednesday after Kyiv halted use of a major transit route blaming interference by occupying Russian forces, the first time exports via Ukraine have been disrupted since the invasion.
Ukraine has remained a major transit route for Russian gas to Europe even after Moscow launched what it calls a "special military operation" on Feb. 24.
The transit point Ukraine shut usually handles about 8% of Russian gas flows to Europe, although European states said they were still receiving supplies. The Ukraine corridor mostly sends gas to Austria, Italy, Slovakia and other east European states.
GTSOU, which operates Ukraine's gas system, said on Tuesday it would suspend flows through the Sokhranovka transit point, which it said delivered almost a third of fuel piped from Russia to Europe via Ukraine.
GTSOU said it was declaring "force majeure", invoked when a business is hit by something beyond its control, and proposed diverting deliveries for Europe to another route, the Sudzha entry point, the biggest of Ukraine's two crossing points.
GTSOU Chief Executive Sergiy Makogon said Russian occupying forces had started taking gas and sending it to Russia-backed separatist regions in east Ukraine. He did not cite evidence.