Uniper CEO warns of 'problem next winter' unless gas caverns fill swiftly - Finance news and analysis from Global Banking & Finance Review
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Uniper CEO warns of 'problem next winter' unless gas caverns fill swiftly

Published by Global Banking & Finance Review

Posted on May 28, 2026

2 min read

· Last updated: May 28, 2026

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Uniper CEO Warns Germany Faces Gas Storage Problem Next Winter

Concerns Over Germany's Gas Storage and Supply for Winter

Current Gas Storage Situation

FRANKFURT, May 28 (Reuters) - German state-owned utility Uniper has warned that the country's gas caverns are not being filled fast enough, its CEO said, calling for incentives to avoid a possible shortage in the next winter season.

• "Storage levels have been rising since March, but it's still far too slow," Michael Lewis told Frankfurter Allgemeine Zeitung

• Germany's gas caverns are currently filled at 30.64%, according to data from Gas Infrastructure Europe, compared with 38.65% a year ago

Impact of Global Events on Gas Prices

• Higher gas prices in the wake of the Iran war have made the storing of gas, which usually starts in spring months, less attractive

• "If we don't fill the gas storage facilities quickly, we'll have a problem next winter," Lewis said

Proposed Solutions and International Comparisons

Regulatory Models for Gas Storage

The French Regulatory Model

• Lewis argued in favour of the regulatory model practised in France, whereby prices are guaranteed by the regulator via so-called contracts for difference

The Austrian Strategic Gas Reserve

• The Austrian model of a strategic gas reserve was only the second-best option for Germany, Lewis said

Currency Exchange Rate

($1 = 0.8621 euros)

Reporting Credits

(Reporting by Christoph SteitzEditing by Madeline Chambers)

Key Takeaways

  • Germany’s gas storage levels—at around 30–28%—are historically low for this time of year and well below EU revised targets (80% by November).
  • High gas prices triggered by geopolitical tensions (notably the Iran war) make refilling economically unattractive, slowing injections.
  • Lewis proposes adopting France’s contracts‑for‑difference model to guarantee storage margins; Austria’s strategic gas reserve is seen as a secondary option.

Frequently Asked Questions

Why did Uniper's CEO warn about a gas shortage in Germany?
Uniper's CEO warned that Germany's gas storage caverns are filling too slowly, raising concerns about a possible shortage next winter.
What are the current gas storage levels in Germany?
Germany's gas caverns are filled at 30.64%, down from 38.65% compared to the same time last year.
What factors have slowed gas storage in Germany?
Higher gas prices due to the Iran war have made storing gas less attractive during the usual spring storage period.
What regulatory solutions did Uniper's CEO propose?
Uniper's CEO favors the French model, where regulators guarantee prices via contracts for difference.
How does the Austrian gas storage model compare to Germany's options?
According to Uniper’s CEO, Austria’s strategic gas reserve is only the second-best option for Germany.

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