Hydropower Reservoir Articles
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How sustainable hydropower can promote biodiversity
The UN demands urgent action on biodiversity. Sustainable hydropower can be part of the solution, writes Alain Kilajian of the International Hydropower Association ...
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Let’s get flexible - Pumped storage and the future of power systems
Pumped storage hydropower has proven to be an ideal solution to the growing list of challenges faced by grid operators. As the transition to a clean energy future rapidly unfolds, this flexible technology will become even more important for a reliable, affordable and low carbon grid, write IHA analysts Nicholas Troja and Samuel Law. "Anything that can go wrong will go wrong". That old adage, ...
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Sustainable hydropower to advance climate action Sustainable hydropower can help governments to limit the impacts of cli
The year 2020 was supposed to be a milestone for climate action. It’s the five-year landmark of the 2015 Paris climate agreement and the first test in countries’ willingness to strengthen their targets for climate action. Governments were expected to put forward more ambitious short-term plans for 2030, and long-term targets for 2050, to decarbonise economies and keep global ...
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Black river falls hydro - Case study
CHC provided a complete water-to-wire equipment package to the City of Black River Falls, Wisconsin, for the upgrade of its Black River Falls Hydroelectric Dam, located on the east bank of the Black River in Jackson County, Wisconsin. This historic dam rebuilding project was completed in June 2012, and involved the installation of an additional low-flow generating unit. The water-to-wire ...
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Nuclear power can save the world
Expanding technology is the fastest way to slash greenhouse gas emissions and decarbonize the economy. Drs. Goldstein and Qvist are the authors of “A Bright Future: How Some Countries Have Solved Climate Change and the Rest Can Follow.” Dr. Pinker is a psychology professor at Harvard. As young people rightly demand real solutions to climate change, the question is not what ...
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Microhydro-Electric Systems Simplified
If you have a suitable site, harnessing the energy in a stream or creek can be the most cost-effective way to make renewable electricity. Compared to the sun and wind’s variability, a stream’s flow is relatively consistent, making microhydro-electric system output the most predictable of all the renewable energy (RE) electrical systems. Hydro resources are also the most site specific, ...
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Africa`s Hydropower Future
A gradual process of development has started yielding results for African hydropower, with a swathe of international hydro and associated power export projects under way or planned. It seems that Africa is becoming a more attractive place to invest in infrastructure development, but what has changed? It is well known that Africa has an abundance of hydropower resources, but it remains in ...
By HydroBox NV
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How to make hydropower more environmentally friendly
Hydropower provides 85 percent of the world’s renewable electricity, but comes with a hefty environmental price tag. Here’s what some are doing to fix that. Humanity got its first large-scale electricity thanks to hydropower. On Aug. 26, 1895, water flowing over Niagara Falls was diverted to spin two generators, producing electricity to manufacture aluminum and carborundum. Since ...
By Ensia
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Optimal control of reservoir release temperature through selective withdrawal intake at hydropower dam
This study is motivated by the need to understand the temperature dynamics and warm-water temperature withdrawal. This study also recognizes the need for an environmental assessment of the proposed temperature control schemes at New Fengman Dam. An unsteady three-dimensional (3D) non-hydrostatic model is used in the present study to predict the hydrodynamics and thermal dynamics in the ...
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3D CFD modelling of velocities and sediment transport in the Iffezheim hydropower reservoir
The simulation of sediment transport by three-dimensional (3D) modelling is linked with the question of how accurate such models are. The current paper provides a test where detailed field measurements of velocities and bed elevation changes over a 3-month period from a prototype reservoir are compared with simulation results. The SSIIM software was used to compute water flow and sediment ...
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The impacts of organic matter on the distribution and methylation of mercury in a hydroelectric reservoir in Wujiang River, Southwest China
In order to understand the impacts of organic matter on geochemical process of Hg in hydroelectric reservoir, spatial and seasonal distributions of total mercury (THg) and methylmercury (MeHg) both in solid and liquid phases of sediment cores were investigated in Wujiangdu Reservoir (WJD) in Guizhou province, China. Four sampling sites with different intensities of cage aquaculture activities ...
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Afulilo Hydroelectric Dam - Case Study
DS Treats 2.6 Billion Gallon Reservoir in Samoa for Hydrogen Sulfide Gas. In 2015 the Afuliolo Dam in Samoa was facing a crisis: the reservoir was releasing large quantities of foul-smelling and corrosive hydrogen sulfide gas (H2S) due to anoxic ...
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Saving Renewable Energy for a Rainy Day
Despite advances in renewable energy technologies, one of the largest hurdles in their widespread adoption has been their intermittent reliability. Energy is only useful if it is available as the grid demands it, which is why concerns about carbon emissions are overridden in favor of the more dependable oil, coal and gas for baseload power. In order for renewable sources such as wind and solar ...
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Large-scale hydropower system optimization using dynamic programming and object-oriented programming: the case of the Northeast China Power Grid
This paper examines long-term optimal operation using dynamic programming for a large hydropower system of 10 reservoirs in Northeast China. Besides considering flow and hydraulic head, the optimization explicitly includes time-varying electricity market prices to maximize benefit. Two techniques are used to reduce the ‘curse of dimensionality’ of dynamic programming with many ...
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Introduction to some kinds of renewable energy
Clean energy is a kind of energy which does not produce pollutants in the use procedure. It includes nuclear energy and "renewable energy". Renewable energy refers to a kind of inexhaustible energy such as hydropower, wind power, solar energy, biomass energy (biogas), water energy, and tidal energy and so on. Renewable energy doesn’t have the possibility of energy depletion, and ...
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Risk sharing in hydropower development: case study of the Chukha Hydel Project in Bhutan
The Himalayan rivers have an enormous hydropower potential that is still not exploited fully for the benefit of the region. Bhutan and Nepal together have an economically feasible potential of 60,000 MW of hydroelectric power generation capacity but are too weak financially to bear the risks associated with the development of their hydro resources alone. India is the only potential market for ...
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Factsheet: Hydropower and ecology
Accounting for 20% (around 3,400 TWh) of global electricity production – even though its contribution to gross final energy consumption is only about 2% – hydropower plays a vital role. This is largely due to the fact that it can be readily regulated to meet fluctuations in demand and substantial reserves can be stored in reservoirs. Hydropower supplies around 56% of Switzerland's ...
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New approaches for medium-scale hydropower development in Vietnam : lessons from preparation of the Trung Son Hydropower Project
This paper provides an overview of the Trung Son hydropower project preparation experience and highlights the innovative features of the project, primarily focusing on the adoption of new approaches in project design and integration of social and environmental concerns. Through disseminating the Trung Son project experience, this paper is intended to contribute to the sustainable scale-up of ...
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Renewable energy can benefit from a changing climate
A warmer and wetter climate may have positive feedback on renewable energy sources. Better conditions for hydropower and biomass energy can be expected. A new analysis has been performed by Nordic and Baltic researchers. The Nordic Council of Ministers has published a new report on the impacts of 21st century climate changes on the development and use of renewable energy in the Nordic and Baltic ...
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The blue water footprint of electricity from hydropower
Hydropower accounts for about 16% of the world’s electricity supply. It has been debated whether hydroelectric generation is merely an in-stream water user or whether it also consumes water. In this paper we provide scientific support for the argument that hydroelectric generation is in most cases a significant water consumer. The study assesses the blue water footprint of hydroelectricity ...
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