Hydropower remains one of the world\u2019s largest renewable electricity systems. It is older than modern solar and wind markets, but it still supplies major renewable generation, supports grid reliability, and anchors electricity systems in countries where rivers, reservoirs, and pumped storage shape power planning. <\/p>\n\n\n\n
The market is also changing. Hydropower is no longer only a conversation about large dams and installed megawatts. The sector now includes pumped storage, modernization of aging assets, climate-risk planning, environmental compliance, small hydro, and country-level energy security. <\/p>\n\n\n\n
This article organizes 300<\/strong>+ hydropower statistics into a practical market view: global capacity, annual generation, pumped storage, regional growth, country-level dependence, investment signals, climate pressure, modernization needs, and planning metrics. <\/p>\n\n\n\n
These headline statistics frame the market. They show the scale of installed infrastructure, the importance of annual generation, the rise of pumped storage, and the difference between hydropower as capacity and hydropower as delivered electricity. <\/p>\n\n\n\n
The numbers that define the hydropower market<\/strong> <\/p>\n\n\n\n
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IRENA capacity statistics\u00a0show\u00a0global hydropower capacity reached\u00a01.46 million<\/strong>\u00a0MW in\u00a02025<\/strong>, up from\u00a01.36 million<\/strong>\u00a0MW in\u00a02021<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Global hydropower capacity rose by about\u00a028.7 GW<\/strong>\u00a0between\u00a02024<\/strong>\u00a0and\u00a02025<\/strong>\u00a0in the latest reported capacity data.\u00a0<\/li>\n<\/ul>\n\n\n\n
IEA also places hydropower at about\u00a014%<\/strong>\u00a0of global electricity generation in\u00a02024<\/strong>, keeping it among the largest power-generation sources worldwide.\u00a0<\/li>\n<\/ul>\n\n\n\n
IRENA\u2019s\u00a02026<\/strong>\u00a0capacity highlights show pure pumped storage hydropower at\u00a0160 GW<\/strong>\u00a0at the end of\u00a02025<\/strong>, while IHA reports a broader pumped storage hydropower base of\u00a0189 GW<\/strong>\u00a0in\u00a02024<\/strong>\u00a0depending on classification.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Asia reached\u00a0668.3 GW<\/strong>\u00a0of hydropower capacity in\u00a02025<\/strong>\u00a0in the latest reported capacity data, making it the largest regional base in the data.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Africa reached\u00a048.9 GW<\/strong>\u00a0in\u00a02025<\/strong>, after rising from\u00a037.5 GW<\/strong>\u00a0in\u00a02021<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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China reached\u00a0448.0 GW<\/strong>\u00a0of hydropower capacity in\u00a02025<\/strong>, making it the largest country-level capacity market in the latest reported capacity data.\u00a0<\/li>\n<\/ul>\n\n\n\n
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India reached\u00a056.3 GW<\/strong>\u00a0in\u00a02025<\/strong>, while Japan recorded\u00a050.1 GW<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Ethiopia recorded\u00a09.2 GW<\/strong>\u00a0in\u00a02025<\/strong>\u00a0and\u00a0remains\u00a0one of Africa\u2019s most important hydropower growth stories.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IEA expects more than\u00a0150 GW<\/strong>\u00a0of new hydro capacity to come online by the end of the decade, mostly in emerging and developing economies.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IEA expects hydropower generation to increase by about\u00a07%<\/strong>\u00a0between\u00a02025<\/strong>\u00a0and\u00a02030<\/strong>, even as hydro\u2019s share of global generation is likely to edge down because solar and wind are growing faster.\u00a0<\/li>\n<\/ul>\n\n\n\n
Editorial readout<\/strong> Hydropower is not only a renewable generation category. It is a long-life infrastructure market, a storage resource, a grid-balancing tool, and a climate-sensitive electricity source. A useful market review separates capacity from output, conventional hydro from pumped storage, and regional growth from national dependence. <\/p>\n\n\n\n
Why Hydropower Still Carries Global Energy Weight<\/strong> <\/h2>\n\n\n\n
Hydropower still matters because it combines renewable electricity with operational value. Solar and wind can scale quickly where resources are strong, but reservoir hydropower can also deliver dispatchable output, spinning reserve, and flexibility when demand is high. <\/p>\n\n\n\n
Market-size figures are useful because small performance changes matter at large scale. A single percentage-point improvement in output, availability, or storage use can affect power reliability, fuel displacement, and revenue in hydro-heavy markets. <\/p>\n\n\n\n
Market-scale and renewable-system benchmarks<\/strong> <\/p>\n\n\n\n
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Global installed hydropower capacity reached\u00a01,455.6 GW<\/strong>\u00a0in\u00a02025<\/strong>\u00a0in the latest reported capacity data.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Hydropower generated around\u00a04,500 TWh<\/strong>\u00a0in\u00a02024<\/strong>, according to IEA\u2019s hydropower overview.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Hydropower supplied about\u00a014%<\/strong>\u00a0of global electricity in\u00a02024<\/strong>, according to IEA.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Renewables collectively supplied about one-third of global electricity in\u00a02024<\/strong>, with hydro still the largest renewable electricity source in IEA\u2019s global review.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IHA reported global hydropower capacity growth of\u00a024.6 GW<\/strong>\u00a0in\u00a02024<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IRENA reported\u00a0total\u00a0hydropower capacity of\u00a0roughly\u00a01,456\u00a0GW<\/strong>\u00a0at the end of\u00a02025<\/strong>\u00a0when pure pumped storage is included.\u00a0<\/li>\n<\/ul>\n\n\n\n
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The global hydropower base is\u00a0slower-growing\u00a0than solar and wind, but it provides dispatchability and storage value that variable renewables cannot provide alone.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Figure 1. Capacity and generation should be reviewed together because installed megawatts do not always show utilization, drought exposure, or grid value.<\/em> <\/p>\n\n\n\n
Market context<\/strong> Hydropower grows differently from solar and wind. New projects can take years to permit, finance, and build, but existing hydropower assets can remain valuable for decades through modernization, efficiency upgrades, safety investment, and grid-flexibility services. <\/p>\n\n\n\n
Global Hydropower Capacity Statistics<\/strong> <\/h2>\n\n\n\n
Capacity statistics show the size of the installed asset base, but they should not be treated as the only market measure. Hydropower plants differ by design, reservoir storage, river flow, operating rules, modernization status, and grid role. <\/p>\n\n\n\n
The latest capacity data shows steady growth in global capacity between 2021<\/strong> and 2025<\/strong>. The increase is meaningful, but it is not as explosive as solar capacity growth. That slower pace reflects the physical and regulatory nature of the sector: projects require hydrological studies, environmental review, land and water planning, grid connection, civil works, and long-term financing. <\/p>\n\n\n\n
World hydropower capacity increased from\u00a01.36 million<\/strong>\u00a0MW in\u00a02021<\/strong>\u00a0to\u00a01.46 million<\/strong>\u00a0MW in\u00a02025<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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The latest capacity data records\u00a01.40 million<\/strong>\u00a0MW in\u00a02022<\/strong>\u00a0and\u00a01.41 million<\/strong>\u00a0MW in\u00a02023<\/strong>, showing a steady upward trend.\u00a0<\/li>\n<\/ul>\n\n\n\n
IEA says more than\u00a0150 GW<\/strong>\u00a0of new hydro capacity is set to come online by\u00a02030<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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The most important capacity questions are not only how many megawatts exist, but how much can be upgraded, how much is flexible, and how much is exposed to drought or seasonal inflow risk.\u00a0<\/li>\n<\/ul>\n\n\n\n
\n The global infrastructure base.\n <\/td>\n <\/tr>\n\n
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\n Hydropower electricity generation\n <\/td>\n
\n 4,500 TWh in 2024\n <\/td>\n
\n Real annual electricity contribution.\n <\/td>\n <\/tr>\n\n
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\n Hydropower share of global electricity\n <\/td>\n
\n 14% in 2024\n <\/td>\n
\n System-level importance.\n <\/td>\n <\/tr>\n\n
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\n New hydropower additions\n <\/td>\n
\n 24.6 GW in 2024\n <\/td>\n
\n Current expansion pace.\n <\/td>\n <\/tr>\n\n
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\n Conventional hydropower additions\n <\/td>\n
\n 16.2 GW in 2024\n <\/td>\n
\n New generation capacity.\n <\/td>\n <\/tr>\n\n
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\n Pumped storage additions\n <\/td>\n
\n 8.4 GW in 2024\n <\/td>\n
\n Storage and flexibility momentum.\n <\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n<\/div>\n\n\n\n
Capacity readout<\/strong> Installed capacity is the starting point, not the full story. Hydropower output depends on water flow, reservoir storage, seasonal demand, drought conditions, dispatch rules, turbine efficiency, plant availability, and grid demand. <\/p>\n\n\n\n
Hydropower Generation and Electricity Share<\/strong> <\/h2>\n\n\n\n
Generation statistics show what hydropower actually delivers to the electricity system. Capacity shows the asset base; generation shows how water availability, reservoir operations, seasonal demand, and dispatch rules translate that asset base into electricity. <\/p>\n\n\n\n
In 2024<\/strong>, hydropower generation recovered globally after drought-affected output in earlier periods. IEA reported roughly 4,500 TWh<\/strong> of hydroelectric generation and around 14%<\/strong> of global electricity. That makes hydropower a core electricity source, not a niche renewable technology. At the same time, hydro\u2019s share can decline over time if solar and wind grow faster, even when hydro generation itself increases. <\/p>\n\n\n\n
Generation and electricity-share benchmarks<\/strong> <\/p>\n\n\n\n
IEA places hydropower at about\u00a014%<\/strong>\u00a0of global electricity generation in\u00a02024<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IEA\u2019s\u00a02025<\/strong>\u00a0global review says renewables collectively accounted for about one-third of global electricity generation in\u00a02024<\/strong>, led by hydropower.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IEA reported hydropower generation increased by about\u00a0190 TWh<\/strong>\u00a0in\u00a02024<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IEA expects hydropower generation to rise by about\u00a07%<\/strong>\u00a0between\u00a02025<\/strong>\u00a0and\u00a02030<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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High hydro-dependence countries need drought planning because a low-water year can reduce output even when installed capacity is unchanged.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Generation data should be reviewed by month and season, not only by annual total, because dry-season output can be\u00a0the\u00a0binding constraint for grid planners.\u00a0<\/li>\n<\/ul>\n\n\n\n
Generation readout<\/strong> Hydropower should be measured through annual generation as well as installed capacity. A country can have large hydro infrastructure but lower output during drought years, while a smaller hydro-heavy system may depend on it for most electricity supply. <\/p>\n\n\n\n
Pumped storage deserves its own market section because it changes hydropower\u2019s role from generation alone to system flexibility. Instead of only producing electricity from river flow, pumped storage shifts energy across hours, supports peak demand, and helps grids absorb more variable renewables. <\/p>\n\n\n\n
The rise of solar and wind makes this function more valuable. Solar output can peak before evening demand, wind output can change quickly, and grids need flexible resources that can ramp, store, and stabilize electricity. Pumped storage is capital-intensive and slow to develop, but it can provide multi-hour storage, grid services, peak power, reserve capacity, and long asset life. <\/p>\n\n\n\n
Pumped storage and flexibility benchmarks<\/strong> <\/p>\n\n\n\n
IHA reported global hydropower additions of\u00a024.6 GW<\/strong>\u00a0in\u00a02024<\/strong>, meaning pumped storage represented about one-third of that annual addition figure.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IRENA\u2019s\u00a02026<\/strong>\u00a0capacity highlights report pure pumped storage hydropower at\u00a0160 GW<\/strong>\u00a0at the end of\u00a02025<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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IHA reports a broader pumped storage installed base of\u00a0189 GW<\/strong>\u00a0in\u00a02024<\/strong>, reflecting source and classification differences.\u00a0<\/li>\n<\/ul>\n\n\n\n
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The latest capacity data records China with\u00a058.69 GW<\/strong>\u00a0of pumped storage capacity in\u00a02024<\/strong>\u00a0and\u00a07.75 GW<\/strong>\u00a0of pumped storage additions that year.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Reuters coverage of IHA data reported more than\u00a0200 GW<\/strong>\u00a0of pumped storage under construction in China and a potential\u00a0130 GW<\/strong>\u00a0outlook by\u00a02030<\/strong>.\u00a0<\/li>\n<\/ul>\n\n\n\n
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Pumped storage is most useful when it is evaluated with renewable curtailment, evening peak demand, grid congestion, reserve needs, and price volatility.\u00a0<\/li>\n<\/ul>\n\n\n\n
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\n Pumped Storage Role\n <\/th>\n
\n What It Supports\n <\/th>\n
\n Why It Matters\n <\/th>\n <\/tr>\n <\/thead>\n\n
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\n Grid balancing\n <\/td>\n
\n Wind and solar variability\n <\/td>\n
\n Stabilizes renewable-heavy power systems.\n <\/td>\n <\/tr>\n\n
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\n Peak power\n <\/td>\n
\n Evening and seasonal demand\n <\/td>\n
\n Reduces reliance on fossil peaker plants.\n <\/td>\n <\/tr>\n\n
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\n Long-duration storage\n <\/td>\n
\n Multi-hour energy shifting\n <\/td>\n
\n Supports reliability when variable renewables drop.\n <\/td>\n <\/tr>\n\n
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\n Ancillary services\n <\/td>\n
\n Frequency and voltage control\n <\/td>\n
\n Improves grid quality and operating resilience.\n <\/td>\n <\/tr>\n\n
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\n Emergency reserve\n <\/td>\n
\n Backup flexibility\n <\/td>\n
\n Strengthens energy security during stress events.\n <\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n<\/div>\n\n\n\n<\/figure>\n\n\n\n
Figure 3. Pumped storage additions show hydropower\u2019s storage and flexibility role in 2024.<\/em> <\/p>\n\n\n\n
Storage readout<\/strong> Pumped storage changes how hydropower should be valued. It is not only a power-generation technology; it is one of the world\u2019s most established large-scale storage systems and a critical balancing option for renewable-heavy grids. <\/p>\n\n\n\n
Regional data is one of the most useful parts of hydropower market analysis because water resources, electricity needs, climate exposure, permitting rules, and project economics differ sharply by geography. A global average can hide very different market realities. <\/p>\n\n\n\n
Asia-Pacific<\/strong> <\/p>\n\n\n\n
Asia is the largest hydropower region in the latest reported capacity data, with 668.3 GW<\/strong> of installed capacity in 2025<\/strong>. China dominates the regional picture with 448.0 GW<\/strong>, while India reached 56.3 GW<\/strong> and Japan reached 50.1 GW<\/strong>. The region combines large conventional hydropower, rapid pumped storage expansion, mountain-river systems, and fast-growing electricity demand. <\/p>\n\n\n\n
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