KIEV, June 6 – Ukraine by early July plans to accumulate over 13 billion cubic meters of gas in its underground storage facilities, according to Prime Minister Arseniy Yatseniuk.

"Over 12 billion cubic meters of gas has been accumulated in the Ukrainian gas storage facilities. I think that we'll finish this month with over 13 billion cubic meters of gas," he said while speaking in parliament on Friday, giving a report on 100 days of the work of the Ukrainian government.