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Clean energy systems

The power sector, the largest source of global greenhouse gas emissions, must decarbonise to strengthen the global response to climate change.

The adoption of renewable, clean energy is integral to delivering the Paris Agreement, which aims to limit the global temperature increase to 1.5 °C, as this would substantially reduce the risks and effects of climate change. 

In order to achieve this goal, fossil-fuel dominated energy systems will need to transition to low-carbon alternatives.

Hydropower remains the largest source of renewable electricity generation in the world. It represents over 16 per cent of global electricity production, more than all other renewables combined, and will play an important role in the energy transition.

Hydropower provides valuable grid services that enable increased and more efficient deployment of variable renewables, alongside other essential energy and water services.

Our role

IHA is increasing awareness of hydropower’s contributions to reliable, stable and affordable energy systems and human development. 

We work with international partners to highlight the role of hydropower in enabling the transition towards clean and sustainable energy systems. 

Focusing on hydropower’s balancing and ancillary services for grid stability, we also share knowledge on the evolving role of pumped hydropower storage in future energy systems.

We are actively engaged in developing publications, workshops, webinars and events highlighting hydropower as a vital component of future energy systems.

Join our network

IHA’s Clean Energy Systems Knowledge Network supports members to build and share knowledge on hydropower’s role in clean energy systems.

If you are an IHA member, you can join our Clean Energy Systems Knowledge Network

IHA members can access the knowledge network in Hydropower Pro, our online member community.

In the online group, network members can connect with each other, exchange experiences and access essential resources, briefings and case studies.

For any questions, please contact IHA senior analyst Samuel Law at



Latest associated content

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    Video: H.E. Elham Ibrahim on discussions at the World Hydropower Congress

    H.E. Elham Ibrahim is the African Union Commissioner for Energy and Infrastructure. Speaking at the 2015 World Hydropower Congress in Beijing, she discusses the challenges in bringing electricity to people across Africa.

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    27 February 2017
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    The Grand Inga project, located in the Democratic Republic of Congo, has the potential to transform Africa’s power sector.  The project will be built in a series of stages and when fully completed could be the largest power station in the world wi

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    10 February 2017
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    Webinar recording: results of the 2016 annual issues survey on hydropower

    The IHA annual issues survey is an initiative that aims to monitor the key issues facing hydropower, identify policy developments around the world that affect the sector, and ensure that our work programme reflects the issues th

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  • William Rex

    Interview: William Rex, World Bank Group

    The World Bank Group is an organising partner of the 2017 World Hydropower Congress, which will take place on 9–11 May in Addis Ababa.

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    2 February 2017
  • 2017 congress focus session

    Small-scale energy systems

    Smaller-scale hydropower solutions have proven to be successful in various regions where it may be more technically feasible and cost-effective to install small-scale systems than more conventional hydropower systems.

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    1 February 2017


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