Over 55 governments back framework to expand pumped storage hydropower

A new framework to accelerate pumped storage hydropower has received support from more than 55 governments and international organisations. The move aims to strengthen clean energy systems globally.

The Global Alliance for Pumped Storage (GAPS), which was created at COP29 in Baku, confirmed the adoption of its governing Principles at the International Forum on Pumped Storage in Paris, France.

The Principles highlight pumped storage hydropower as crucial for energy systems that are flexible, secure, and resilient to climate impacts. Known as ‘water batteries’, this technology provides over 90% of the world’s electricity storage capacity, helping absorb surplus power from renewable sources such as solar and wind and supporting grid stability.

The framework provides guidance for governments to improve energy system flexibility, reduce emissions, support economic growth, and promote international collaboration and innovation in sustainable energy storage.

The GAPS Principles recognise the central role of pumped storage in clean energy generation and grid flexibility. They also note its contribution to climate mitigation and adaptation, encourage investment to drive job creation and economic activity, and position GAPS as a hub for sharing best practices and advancing technological leadership.

The framework also recommends long-duration energy storage targets, government incentives, partnerships between public and private sectors, workforce development, skills transfer, and alignment with global sustainability standards.

Malcolm Turnbull, GAPS chair and former Australian Prime Minister, stated that the Principles demonstrate the Alliance’s commitment to supportive policies and regulations for pumped storage while promoting investment. He added that strong government action is necessary to deploy the technology at the scale required for a safer, cleaner, and more resilient energy future.