Hydropower Articles

  • 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

  • Birth of an AccuMax

    Head of the AccuMax Family In 2015, we released the AccuMax dispenser as the first in a “family” of dispensers. Our goal is to create a line of innovative, user-friendly dispensers built around real feedback from our customers. So, while we may call the AccuMax our “standard” dispenser, there is really nothing standard about it. It was born, so to ...

  • Study: 100% Renewable Electricity System is the Cheapest Option for South America

    Transitioning to a fully renewable electricity system is possible for South America by 2030. A study by Lappeenranta University of Technology (LUT) and VTT Technical Research Centre of Finland Ltd. also shows that a 100 percent renewable system (100% RE) is the cheapest electricity production option and can be achieved with very little energy storage. "South America has a unique renewable energy ...


    By Smart Grid Observer

  • Understanding water-society nexus: insights from Turkey's small-scale hydropower policy

    Turkey's recent venture involving the construction of hundreds of small-scale hydropower projects is a significant trend, both in regard to its contribution to Turkey's hydroelectricity production and the social and environmental impact of these projects at the local level. Turkey's hydropower policy was premised on a conventional understanding of water driven by science, technology, and the ...


    By IWA Publishing

  • Idaho Water District’s new Hydroelectric project - case study

    This Irrigation District north of Twin Falls installed a new run of the river hydroelectric facility. In order to protect their new turbines, they installed this Traveling Water Screening System. The majority of debris consists of weeds, tumbleweeds, aquatic plants and urban debris. The 5 screens at this location drop debris on a 60’ long conveyor. The conveyor carries the debris to an ...


    By International Water Screens

  • No Place Is Too Far

    The remote location of hydropower stations is often a great challenge when major repair work is necessary. The refurbishment of a large generator in the Scottish Highlands shows how Sulzer finds cost-effective service solutions even in places miles from nowhere. Much of the UK hydroelectric capacity was built during the 1950s. These installations have performed extremely well, especially ...


    By Sulzer

  • Understanding India-Pakistan water politics since the signing of the Indus Water Treaty

    On 19 September 1960, the Indus Water Treaty (IWT) was signed between India and Pakistan, presumably resolving the conflict of Indus water sharing. Nevertheless, over the years the conflict has re-appeared, dragging both the riparian states into confrontation. This paper explores the reasons that lead to conflict despite the Indus water sharing having already been resolved by the IWT. Analysis ...


    By IWA Publishing

  • Modeling future changes in the North-Estonian hydropower production by using SWAT

    Climate change is altering temperature, precipitation, and other climatic parameters, affecting sectors dependent on water resources, e.g. energy production. The purpose of this study is to analyze the possible influences of climate change on hydropower potential in North Estonia. In Estonian run-of-river hydropower plants, energy comes mainly from water volume. Thus, changes in hydropower ...


    By IWA Publishing

  • Cam correlation analysis using Acoustic discharge measurement

    The low head hydro power plant in Wettingen, Switzerland, is in operation since 1933 and no effective cam optimization has been carried out up to now. The goal of the measuring campaign was to provide data enabling an economic study for a retrofit and upgrade project of the plant and the measurement of the efficiency improvement of turbines after refurbishment. The contribution discusses cam ...


    By HydroVision GmbH

  • EC support for UK power link raises Ireland’s offshore export potential

    The European Commission (EC) announced November 18 it had given priority status to ISLES, a cluster of Irish Sea grid projects which would transmit power from proposed Irish offshore wind farms to the UK grid. There are currently five Irish offshore windfarm projects for a total 2.6 GW of capacity. The inclusion of ISLES in the EC’s list of “projects of common interest” allows ...

  • A real-time operation of the Three Gorges Reservoir with flood risk analysis

    Risk analysis is essential to reservoir operation. In this study, a new analysis for reservoir operation is proposed to enhance the utilization rate of the flood water from the Three Gorges Reservoir (TGR) during the flood season. Based on five scenarios of hydrology forecasting with the adaptive neuro-fuzzy inference system (ANFIS), a multi-objective optimum operation was implemented ...


    By IWA Publishing

  • Institutional evolution of Missouri river management

    The Missouri River is the longest river in North America and flows from the semi-arid western states to the relatively moist Midwest. An integrated system of large reservoirs, constructed in the mid-20th century, provides important water storage, hydroelectricity and flood control benefits. This system has been managed by the US Army Corps of Engineers which has traditionally followed its ...


    By IWA Publishing

  • Commercial boost for firms that suck carbon from air

    It has long been regarded as one of the more blue-skies solutions to climate change. Now two companies have vastly increased their capability to suck carbon dioxide from the air. One, based in Canada, plans to convert captured CO2 into diesel to fuel buses; the other, in Switzerland, will sell it on to a firm that uses CO2 to boost crop growth in greenhouses. The ...


    By GLOBE Foundation

  • The Sri Lanka environmental flow calculator: a science-based tool to support sustainable national water management

    As Sri Lankan water resources are being increasingly exploited, particularly for hydropower and irrigation, ecologists, water practitioners and policymakers alike are realizing the importance of protecting these resources and setting environmental sustainability thresholds. Environmental flows (EF) – the concept that helps define such thresholds – has now become an integral part of ...


    By IWA Publishing

  • Micro-Hydros Earn First Carbon Revenue in Nepal

    MICRO-HYDROS EARN FIRST CARBON REVENUE IN NEPAL While the rugged mountains of rural Nepal don’t lend themselves to grid-fed electricity, their rivers, lakes, and glacial melt offer plenty of renewable resources for energy. Between 2007 and 2014, over 400 micro run-of-the-river hydropower plants were built by the Nepali government with help from the World Bank as ...


    By DelAgua Group

  • Hydropower installation

    DSEP100 Mains Decoupling Relays for hydropower projects in remote locations in the Cumbrian Lake District, UK.  Old decommissioned water wheels in Ambleside, Blencathra and Langdale have been recently refurbished and brought back into use as sophisticated hydropower turbines which are now working in parallel with the grid, ...

  • Implementation strategies and a cost/benefit comparison for compliance with an environmental flow regime in a Mediterranean river affected by hydropower

    Compliance with the Water Framework Directive (WFD) of the European Union requires water managers to establish environmental flow regimes (EFR) in rivers across the continent. Few water agencies have examined the economic and social welfare impacts of implementing environmental flow requirements. We present the approach used by the Catalan Water Agency to calculate an EFR and estimate the ...


    By IWA Publishing

  • Stochastic simulation of daily streamflow sequences using a hidden Markov model

    Estimation of daily streamflow time series is of paramount importance for the design and implementation of river engineering and management projects (e.g., restoration, sediment-transport modelling, hydropower). Traditionally, indirect approaches combining stochastic simulation of rainfall with hydrological rainfall–runoff models are used. However, these are limited by uncertainties in model ...


    By IWA Publishing

  • Social capital in large-scale environmental collaboration: the case of the Platte River Recovery Implementation Program

    Environmental collaborative governance arrangements have the potential to build social capital, leading to long-term cooperation among parties with a history of conflict over water use, in particular in irrigation, hydropower production and riverine wildlife habitat. Previous research on social capital in the context of collaborative governance has emphasized small-scale grassroots initiatives ...


    By IWA Publishing

  • Summertime conditions of a muddy estuarine environment: the EsCoSed project contribution

    As part of the Estuarine Cohesive Sediments (EsCoSed) project, a field experiment was performed in a highly engineered environment, acting as a natural laboratory, to study the physico-chemical properties of estuarine sediments and the associated hydro-morphodynamics during different seasons. The present contribution focuses on the results obtained from the summertime monitoring of the most ...


    By IWA Publishing

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