Commission welcomes new ENTSOG report confirming the importance of storage last winter and need to start refilling as soon as possible

In its 2025 Summer Supply Outlook report, published today, the European Network for Transmission System Operators for Gas (ENTSOG) confirmed that gas storage was particularly important last winter, covering more than 30% of the EU’s gas consumption. Storages also helped to contain price volatility, as stored gas was cheaper than LNG imports during winter months. Once again, the gas storages significantly contributed to the EU’s overall energy security. 

The new report states that the storage levels were at 34% on 1 April 2025, the end of the winter season and gas year. This is lower than in the 2 previous years with warm winters, but in line with average pre-crisis levels. 

The Summer Supply Outlook report recalls that it is essential to start refilling storage as early as possible. Data from Gas Infrastructure Europe (GIE) confirms that there has been a continuous net injection in EU storage since the end of March, which marks the start of the filling season. 

Under the EU Gas Storage Regulation (EU/2022/1032), the EU set the objective to fill storage to 90% of capacity by 1 November. In the past 2 years, this target was already achieved more than 2 months ahead of deadline. Moreover, to facilitate storage refill and prevent price signal distortion this summer, the Commission adopted a Recommendation on 5 March 2025, calling on EU countries to consider market conditions and the available flexibility provisions when deciding on measures to refill storages this summer.