IEA report sets a course for doubling hydroelectricity output by 2050

(Bilbao, Spain) — 29 October 2012

The International Energy Agency (IEA) and the Ministry of Mines and Energy of the Federative Republic of Brazil show in a report released today how to double hydroelectricity production by 2050, an achievement that could prevent annual emissions of up to 3 billion tonnes of CO2 from fossil-fuel plants.

The report, Technology Roadmap: Hydropower, challenges the notion thatthe world’s hydroelectric resources have peaked. Instead, it saysemerging economies have significant potential to generate electricity from large plants. The publication details action needed from policy makers to allow hydroelectric production to double, and addresses necessary conditions, including resolving environmental issues and gaining public acceptance.

“Hydroelectricity is a very cost-effective technology already,” IEA Deputy Executive Director Richard H. Jones said at the launch of the report during the HYDRO 2012 conference in Bilbao. “However, new developments face tough financial challenges. Governments must create a favourable climate for industry investmentwhen designing electricity markets.” Albert Geber de Melo, General-Director of the Brazilian Electric Energy Research Centre (CEPEL), noted that in emerging economies and developing countries, “large and small hydropower projects can improve access to modern energy services, alleviate poverty and foster social and economic development, especially for local communities”. 

Hydropower is the leading renewable electricity generation technology worldwide, with new capacity additions since 2005 generating more electricity than all other renewables combined. Technology Roadmap: Hydropower describes the sector’s diversity, ranging from run-of-river to reservoir plants plus pumped-storage hydropower, and calls for a holistic approach to deployment that takes into account other aspects of water management.

Hydroelectricity’s many advantages include reliability, proven technology, large storage capacity, and very low operating and maintenance costs. Hydropower is highly flexible, a precious asset for electricity network operators, especially given rapid expansion of variable generation from other renewable energy technologies such as wind power and photovoltaics. Many hydropower plants also provide flood control, irrigation, navigation and freshwater supply.

In particular, the new report urges policy makers to:

Technology Roadmap: Hydropower is the latest in a series of IEA publications that focus on global low-carbon energy technologies, from biofuels to smart grids, and provide recommendations for governments and other stakeholders in four areas: policy and market design, sustainability and public acceptance, financial challenges, and technology development.


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