As of September 14, 2025, natural gas reserves in Ukraine's underground storage facilities (UGS) have for the first time this year exceeded last year's figures, reaching 12.055 billion cubic meters.

This was reported by the publication ExPro.

On this date, Ukraine's UGS held 12.055 billion cubic meters of gas, while on September 14, 2024, the storage contained 12.05 billion cubic meters, which is 0.05% or nearly 5 million cubic meters less.

It is expected that in the coming days this gap will continue to widen.

The publication noted that at the beginning of this year's injection season (April 17), Ukraine's UGS had almost 5.41 billion cubic meters of natural gas, which is 35% or 2.95 billion cubic meters less than on April 17, 2024. Throughout the injection season, Ukraine managed to completely close this gap, primarily due to increased imports.

Since the start of the injection season, nearly 6.68 billion cubic meters of gas have been injected into Ukraine's UGS, which is 1.67 times more than in 2024. Additionally, more gas has been injected into storage in 2025 than was stored in UGS at the end of the heating season.

Specifically, in September 2025, Ukraine is injecting an average of 53.9 million cubic meters of natural gas into storage daily, which is 2.3 times more than in September 2024. About half of these volumes consist of imported resources.

The average daily import volume is 23.6 million cubic meters in September, nearly all of which is provided by the state-owned company Naftogaz of Ukraine.

It is worth noting that on September 13-14, the fill level of underground gas storage in the EU reached 80% (86 billion cubic meters of natural gas). This is the lowest fill rate in the EU since the onset of the full-scale Russian invasion of Ukraine, but this year's reserves are higher than in 2021.