He noted that in 2022 the world faced a sharp rise in energy prices.
This year, in his opinion, the situation will also be unpredictable.
“In the future, reserves will be depleted, and without Russian gas it will be difficult to replenish them for next winter,” the report says.
Koyama added that energy prices could rise again and "pull oil prices with them."
Earlier, Polish Prime Minister Mateusz Morawiecki announced plans to confiscate Russian assets and buy gas and coal with them.
It was also reported that Germany faced a problem due to new sanctions against Russia.