Articles tagged with Hydroelectric Power
Researchers developed a portfolio optimization framework to maximize offshore energy production by identifying optimal locations for wind turbines and marine hydrokinetic technologies. The study found that combining these technologies in suitable locations can significantly reduce costs and increase energy stability.
A new study uses radar technology to reveal crumbling dams across the US, threatening socially vulnerable communities. The research aims to create a country-wide database of unsafe dams, their flood risks, and impacted communities.
This survey reviews cutting-edge hydrogen tank technologies, exploring how to safely store gaseous or liquid hydrogen in extreme conditions. Key advancements promise to transform aviation, with materials like carbon fiber-reinforced polymers offering exceptional strength-to-weight ratios and reducing the weight of hydrogen tanks.
A team of scientists has developed a breakthrough floating droplet electricity generator that directly incorporates natural water into its structure, reducing material weight by about 80% and cost by about 50%. The device produces high peak output voltages comparable to conventional systems.
An international team of researchers has tracked changes in over 114,000 rivers in High-mountain Asia, finding nearly 10% of them saw an increase in flow from glacial ice melt. This shift poses a challenge for the region's energy future, particularly hydroelectricity generation, due to increased sediment and reduced reservoir capacity.
A comprehensive report cataloging the most widespread and damaging drought events since 2023 reveals food, water, energy crises and human tragedies. The 'Drought Hotspots Around the World 2023-2025' report underscores the need for systematic monitoring of drought's impacts on lives, livelihoods, and ecosystems.
Researchers from Southwest Research Institute (SwRI) have set a new temperature record for testing materials in high-pressure environments. The team successfully achieved unprecedented conditions of 1,150 degrees Celsius at 300 bar using a modified autoclave setup.
New research maps 35 years of river changes on a global scale, revealing 44% of downstream rivers saw decreases in water flow, while 17% of upstream rivers saw increases. This shift has significant implications for flooding, ecosystem disruption, and freshwater supplies.
A comprehensive analysis found that reservation lands are less likely to host wind farms and solar farms due to regulatory barriers. The study predicts tribes would forego over $19 billion in lease and tax earnings by 2050 if the disparity persists.
Rocio Uria-Martinez, an energy and environmental economist at ORNL, was recognized for her work on the U.S. Hydropower Market Report detailing industry trends. Her research analyzed climate change impacts, pumped storage hydropower operations, and cost allocation in multipurpose projects.
Researchers evaluated the impact of hydroelectric project construction on regressive erosion and land use/land cover changes in Ecuador's Coca River. The study found an acceleration of regressive erosion post-CCSHP implementation, affecting fluvial dynamics and environmental protection.
A team of over 100 scientists from Brazil and the US ran high-resolution simulations of South America's past and future climate using a weather research and forecasting model. The goal is to better understand hydroclimatic processes and inform adaptation measures for millions affected by climate change.
The Pacific Northwest is launching a hydrogen energy hub with a $7 billion investment from the Department of Energy. PNNL's expertise will support the development of clean hydrogen production and integration with renewable energy sources in Washington, Oregon, and Montana.
Recent state-sponsored infrastructure projects in Angola and Mozambique have been linked to climate-related humanitarian disasters. Research by Ruy Blanes highlights the need for local consideration in planning, as neglect can lead to devastating consequences.
Cornell University researchers found that unused solar, wind, and hydroelectric power in the US could support the exponential growth of NFT transactions. The study suggests that harnessing this excess energy could reduce carbon emissions from NFT processing, which currently reach an equivalent of 0.37 megatons of CO2 per year.
A study by Carnegie Mellon University researcher Edson Severnini found that large-scale hydroelectric dams constructed in the US before 1950 spurred short- and long-term growth, while those built after 1950 had modest effects on local economies. The decline is attributed to advancements in high-tension transmission lines.
Researchers found that subsurface warming in the North Atlantic precedes the release of massive icebergs from Canada and the US, leading to a reduction in surface salinity and AMOC collapse. This finding sheds light on the sequence of events responsible for the collapse of the Atlantic meridional overturning circulation system.
New research from the University of East Anglia finds that hydropower developments lead to flooding forests, driving biodiversity loss and ecosystem disruptions. The study reveals widespread species extinction, especially among large-bodied species, highlighting the need for sustainable energy security and biodiversity conservation.
Researchers at ORNL developed a theory that thylakoids help plants tolerate harsh conditions, while a digital platform informs on hydropower development. AI-powered neutron scattering can also accelerate experiments, and e-waste recycling is being explored.
A new energy plan developed by researchers at Kyushu University suggests a more sustainable future energy system that includes 61% renewable-based electricity. The plan, which prioritizes solar and wind power, exceeds current projections by 50%, with significant reductions in coal-based generation and nuclear power.
Scientists and anglers warn that Norwegian rivers are vulnerable to hydropeaking, which can kill salmon fry and other living organisms due to rapid water level changes. The study reveals that over 3000 km of river courses are impacted by hydropeaking from 802 hydropower plants.
Researchers at Oak Ridge National Laboratory demonstrate a system that can detect propane leaks within seconds, alerting emergency services. They also study the secrets of silicon deposits in plants to enhance soil carbon storage. Additionally, they assess the viability of retrofitting untapped dams for hydropower electricity generation.
A SUTD study has uncovered the reservoir filling strategies and operating rules of China's big hydropower dams on the Lancang-Mekong river. The data shows that dam operations remained steady during a severe drought, indicating no need for emergency releases to mitigate its impact.
The summit focuses on emerging innovations and scientific capabilities from DOE national laboratories, including self-reinforced cement, temperature-based hibernating batteries, and acoustic tags. These place-based research solutions aim to address challenges in energy resiliency and the maritime industry.
The Mekong delta, Southeast Asia's most productive agricultural region and home to 17 million people, is at risk of disappearing by the end of the century due to subsidence. Sediment loss from upstream dams and poor water management exacerbates the issue, threatening food security and livelihoods.
Researchers propose a dual water and energy storage scheme to resolve the temporal mismatch between resources, reducing CO2 emissions while guaranteeing water supply. The scheme utilizes seasonal pumped hydroelectric systems to store water for irrigation during summer and hydropower generation in winter.
A new report from Oak Ridge National Laboratory identifies supply chain must-haves for maintaining the pivotal role of hydropower in decarbonizing the nation's grid. The report also highlights advances in safer battery technologies and innovative electron microscopy techniques for imaging lithium in energy storage materials.
The 'freeze-thaw battery' can store energy for months without significant loss of capacity, making it a key step towards seasonal energy storage. The battery uses molten-salt and common materials to achieve this, with the potential to enhance grid resilience during severe storms or power outages.
Researchers developed Electric Truck Hydropower to harness the potential of steep mountain ranges, generating 1.2 PWh electricity per year, equivalent to 4% of global energy consumption. The technology uses existing road infrastructure and regenerative brakes to convert water into electricity.
A study published in Frontiers in Energy Research calculates the costs of a CO2-neutral Switzerland, finding that three different energy systems would require significant investments and increased energy costs. The most efficient option is electrifying the entire energy supply, but this comes with the challenge of storing enough renewa...
Researchers used AI to identify detrimental dams and reveal lost environmental benefits from existing 158 hydropower dams. The study considers six socio-environmental criteria, including river flow and energy production, to optimize dam selection across the entire Amazon basin.
A new computational tool, 'Amazon EcoVistas,' analyzes proposed dam projects collectively for their energy generation and environmental impacts. The tool identifies hydroelectric dam portfolios that meet energy production goals with the least environmental harm, taking into account five environmental criteria and social values.
A team from UNIGE and Empa recommends a domestic generation mix of wind and photovoltaic energy to reduce Switzerland's contribution to global greenhouse gas emissions. The scenario would enable the country to reduce its footprint by an estimated 45%.
Researchers use environmental DNA to monitor aquatic species near hydropower facilities, while also developing a novel method for printing full-strength steel components using additive manufacturing. These advancements could lead to more efficient and cost-effective monitoring and renewable energy production.
Researchers developed a tool to monitor and predict water losses in waterfalls based on their soundscapes, allowing environmental managers to balance water diversion and preservation. The study highlights the importance of maintaining a minimum threshold of water flow for waterfall appearance and sound.
Researchers led by NUS found that climate change is increasing fluvial sediment loads in the high mountains of Asia, with implications for hydropower, food, and environmental security. The study reveals that sediment fluxes could more than double by 2050 under an extreme climate change scenario.
Climate change-driven reductions in precipitation and river discharge will diminish the Amazon's hydropower capacity, according to a new study. As a result, alternative energy sources like solar and wind are expected to become more important.
A study by McGill University researchers found that planned hydropower dams could sever over 260,000 km of river, threatening free-flowing rivers globally. The dams would collectively generate less than 2% of the renewable energy needed by 2050 to keep global temperature increase below 1.5°C.
The Indus basin has significant hydropower and seasonal pumped storage potential due to its high altitudes and water availability. The region's unique climate and geography make it an ideal location for long-term energy storage, with costs comparable to natural gas reinjection.
A study published in Nature Communications suggests that Southeast Asia can decouple electricity supply and environmental protection by embracing renewable technologies like solar energy. The research reveals that only 82% of planned dams are necessary, and halting construction would have minimal impact on electricity costs.
A study on carbon dioxide emissions downstream of the Kariba Dam in Zambia reveals highly variable emissions, influenced by seasonal and hourly changes. Failing to account for these variations could lead to biased estimates of tropical reservoir emissions.
A team of 53 scientists determined the deadly winter debris flow in Uttarakhand, India was caused by falling rock and glacier ice that melted on its descent. The study used satellite imagery, seismic records and eyewitness videos to produce computer models of the flow, shedding light on emerging hazards in the region.
Researchers analyzed the causes and scope of the devastating Chamoli flood, which killed over 200 people and destroyed two hydropower plants. The study used satellite imagery and digital models to reconstruct the event, highlighting the risks of hydropower projects in fragile alpine ecosystems.
A massive rock and ice avalanche in February 2021 killed over 200 people in Uttarakhand, India. The disaster was exacerbated by exceptional avalanche height, rock-to-ice ratio, and downstream hydroelectric infrastructure, underscoring the need for sustainable planning.
Researchers found that dams release significantly more carbon dioxide than previously thought, with areas drying out releasing considerably more carbon. The study used satellite imagery and found that 15% of dam reservoirs were not completely filled, leading to increased carbon emissions.
A new study suggests that expanding solar and wind power across the region could alleviate disagreements between Ethiopia, Sudan, and Egypt over Africa's largest hydropower plant. Integrating GERD operation with solar and wind power would provide regional win-win situations, benefiting all countries involved.
A SUTD study found that big droughts in the Greater Mekong region reduce hydropower production, leading to increased fossil fuel use and higher carbon emissions. The researchers suggest using mathematical models to coordinate water-energy operations and prepare contingency plans for droughts.
Engineers at Otto-von-Guericke-Universität Magdeburg create turbine blades with integrated drives to optimize flow and reduce stall conditions, leading to increased efficiency and lifespan. This technology aims to combat climate change by harnessing sustainable tidal energy, reducing the need for high-performance materials.
Researchers at Oak Ridge National Laboratory have developed a COVID-19 screening whistle that captures aerosols from exhaled breath for easy home testing. Additionally, advancements in welding technology have sped up the process and improved consistency, benefiting NASA's deep space missions.
Small hydropower dams in Brazil are found to cause more significant disruptions to fish migration patterns than large hydropower projects. The study highlights the cumulative impacts of these smaller dams on river connectivity and biodiversity.
Researchers in the FIThydro project developed new assessment methods and technologies to reduce negative ecological effects of hydropower plants. They also created a decision support system to help operators plan and assess hydropower plants, taking into account environmental policy requirements and international regulatory guidelines.
Scientists developed compact solid-state pulse generators that can produce electrical pulses of less than one billionth of a second in duration and up to 50 billion watts in power. This breakthrough sets the groundwork for new applications in fields such as high-power microwave electronics and X-ray imaging devices.
Researchers estimate that adding floating solar panels to existing hydropower stations could generate up to 10,600 terawatt-hours of power annually. This would account for about 35% of global electricity consumption in 2018.
Researchers from Smithsonian Tropical Research Institute analyzed sediment cores and historical records to study the long-term effects of damming on Lake Gatun's ecosystem. The findings highlight the importance of natural river processes in maintaining biodiversity in tropical ecosystems.
A study found that droughts can increase power costs and pollution linked to hydropower losses, even with increased renewable energy. The analysis of the 2012-2016 California drought revealed a moderate impact on electricity prices but also highlighted the importance of flexible generation sources during drought years.
A new study maps the potential for 'solar-wind-water' strategies in West Africa, finding that flexibly dispatched hydropower can increase renewable power generation by over 30%. Hydropower plants can support solar and wind energy, reducing CO2 emissions and environmental impact
A new study by the University of Córdoba and Trinity College Dublin finds that recovering energy from water distribution networks can save 12.8% of energy annually. This emerging technology uses pumps as turbines to generate electricity, reducing carbon footprint and financial burden on farmers.
A new study finds that climate change affects hydropower potential, with a 1.5°C scenario offering greater benefits than a 2°C scenario. Hydropower production will play an increasingly crucial role in the world's energy supply as a renewable and clean energy source.
The University of Stirling has received £1.2 million to study global sustainability, with a focus on resolving conflicts between the United Nations Sustainable Development Goals. The project will use hydropower as a model system to identify and mitigate issues caused by competing objectives.
A new study reveals that dams in the upper Mekong River increase downstream nutrient bioavailability, contrary to the widespread assumption. The cascading effect of reservoirs increases hydraulic residence time and leads to a shift in phytoplankton species composition.