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The beauty of the Hudson River Valley was a legendary subject for artists during the nineteenth century. They portrayed its bucolic settings and humans in harmony with nature as the physical manifestation of God's work on earth. More than a hundred years later, those sentiments would be tested as never before. In the fall of 1962, Consolidated Edison of New York, the nation's largest utility company, announced plans for the construction of a pumped-storage hydroelectric power plant at Storm King Mountain on the Hudson River, forty miles north of New York City. Over the next eighteen years, their struggle against environmentalists would culminate in the abandonment of the project.Robert D. Lifset offers an original case history of this monumental event in environmental history, when a small group of concerned local residents initiated a landmark case of ecology versus energy production. He follows the progress of this struggle, as Con Ed won approvals and permits early on, but later lost ground to environmentalists who were able to raise questions about the potential damage to the habitat of Hudson River striped bass.Lifset uses the struggle over Storm King to examine how environmentalism changed during the 1960s and 1970s. He also views the financial challenges and increasingly frequent blackouts faced by Con Ed, along with the pressure to produce ever-larger quantities of energy.As Lifset demonstrates, the environmental cause was greatly empowered by the fact that through this struggle, for the first time, environmentalists were able to gain access to the federal courts. The environmental cause was also greatly advanced by adopting scientific evidence of ecological change, combined with mounting public awareness of the environmental consequences of energy production and consumption. These became major factors supporting the case against Con Ed, spawning a range of new local, regional, and national environmental organizations and bequeathing to the Hudson River Valley a vigilant and intense environmental awareness. A new balance of power emerged, and energy companies would now be held to higher standards that protected the environment.

The Pergau dam in Malaysia was the most controversial project in the history of British aid. Because of its high cost, it was a poor candidate for aid funding. It was provided in part to honour a highly irregular promise of civil aid in connection with a major arms deal. After two parliamentary inquiries and intense media coverage, in a landmark judgement the aid for Pergau was declared unlawful. Tim Lankester offers a detailed case study of this major aid project and of government decision-making in Britain and Malaysia. Exposing the roles played by key politicians and other stakeholders on both sides, he analyses the background to the aid/arms linkage, and the reasons why the British and Malaysian governments were so committed to the project, before exploring the response of Britain's Parliament, and its media and NGOs, and the resultant legal case. The main causes of the Pergau debacle are carefully drawn out, from conflicting policy agendas within the British government to the power of the business lobby and the inability of Parliament to provide any serious challenge. Finally, Lankester asks whether, given what was known at the time and what we know now, he and his colleagues in Britain's aid ministry were correct in their objections to the project. Pergau is still talked about as a prime example of how not to do aid. Tim Lankester, a key figure in the affair, is perfectly placed to provide the definitive account. At a time when aid budgets are under particular scrutiny, it provides a cautionary tale.

In the middle of the twentieth century, governments ignored the negative effects of large-scale infrastructure projects. In recent decades, many democratic countries have continued to use dams to promote growth, but have also introduced accompanying programs to alleviate these harmful consequences of dams for local people, to reduce poverty, and to promote participatory governance. This type of dam building undoubtedly represents a step forward in responsible governing. But have these policies really worked? Flooded provides insights into the little-known effects of these approaches through a close examination of Brazil's Belo Monte hydroelectric facility. After three decades of controversy over damming the Xingu River, a tributary of the Amazon, the dam was completed in 2019 under the left-of-center Workers' Party, becoming the world's fourth largest. Billions of dollars for social welfare programs accompanied construction. Nonetheless, the dam brought extensive social, political, and environmental upheaval to the region. The population soared, cost of living skyrocketed, violence spiked, pollution increased, and already overextended education and healthcare systems were strained. Nearly 40,000 people were displaced and ecosystems were significantly disrupted. Klein tells the stories of dam-affected communities, including activists, social movements, non-governmental organizations, and public defenders and public prosecutors. He details how these groups, as well as government officials and representatives from private companies, negotiated the upheaval through protests, participating in public forums for deliberation, using legal mechanisms to push for protections for the most vulnerable, and engaging in myriad other civic spaces. Flooded provides a rich ethnographic account of democracy and development in the making. In the midst of today's climate crisis, this book showcases the challenges and opportunities of meeting increasing demands for energy in equitable ways.

Southwestern China has abundant hydropower networks, wherein neighboring cascade hydropower stations within the same river basin are typically connected to the power system in a chain-structured configuration. However, when such chain-structured cascade hydroelectric power plants (CC-HPPs) participate in automatic voltage control (AVC), problems such as reactive power interactions among stations and unreasonable voltage gradients frequently arise. To address these issues, this study proposes an optimized multi-station coordinated response control strategy based on sensitivity analysis and hierarchical AVC. Firstly, based on the topology of the chain-structured hydropower sending-end network, a reactive power–voltage sensitivity matrix is constructed. Subsequently, a regional-voltage-coordinated regulation model is developed using sensitivity analysis, followed by the establishment of a mathematical model, solution algorithm, and operational procedure for multi-station AVC-coordinated response optimization. Finally, case studies based on the actual operational data of a CC-HPP network validate the effectiveness of the proposed strategy, and simulation results demonstrate that the approach reduces the interstation reactive power pulling up to 97.76% and improves the voltage gradient rationality by 16.67%. These results substantially improve grid stability and operational efficiency while establishing a more adaptable voltage control framework for large-scale hydropower integration. Furthermore, they provide a practical foundation for future advancements in multi-scenario hydropower regulation, enhanced coordination strategies, and predictive control capabilities within clean energy systems.

The potential of applying a floating PV (FPV) system in an Italian context (namely, Cecita dam and Mucone hydroelectric power plants) is studied. The additional PV energy production, as well as the effect of non-evaporated water on the productivity of the hydropower plant, is analyzed by varying the basin surface coverage. The simulations highlight that the amount of additional hydroelectricity is quite small if compared to the non-FPV system, reaching about 3.56% for 25% basin surface coverage. However, the annual PV energy production is noticeable even at low coverage values. The expected gain in electricity production in the case of 25% basin surface coverage with the FPV plant rises to 391% of that of the actual hydropower plant. This gain becomes even larger if a vertical axis tracking system is installed and the increase is about 436%. The economic analysis confirms that the production costs (USD/kWh) of FPV systems are comparable to those of land-based PV (LBPV) plants, becoming smaller in the case that a tracking system is installed. In particular, the best solution is the one with 15% coverage of the lake. In this case, the levelized cost of electricity for the LBPVs is 0.030 USD/kWh and for the FVPs, with and without tracking, it is equal to 0.032 and 0.029 USD/kWh, respectively.

Small hydroelectric power plants (SHPPs) are often promoted as clean and renewable energy sources. However, SHPPs are often characterized by hydropeaking, which is a practice involving the sudden release of water from turbines. Hydropeaking may have multiple detrimental effects on downstream ecosystems, among which is fish stranding. This phenomenon involves trapping fish in isolated pools or dry riverbeds, which detrimental effects on fish populations and assemblages are often poorly quantified. Here, we investigated the implications that hydropeaking may have on fish populations in small Brazilian rivers. Specifically, we recorded fish stranding events (including the number of individual fish stranded) while monitoring the practice of hydropeaking by SHPPs in two watersheds. By combining observational and modeling approaches, we examined the relationships between fish stranding events and the operation of six SHPPs along a 5 km downstream stretch. For this analysis, we focused primarily on fish families which were dominant in the rivers. Our results indicate an exponential increase in fish stranding due to hydropeaking, which significantly affects fish populations as we move away from the SHPPs axes and towards downstream sections. The principal affected fish families were Characidae (23.7% of stranding), Heptaperidae (23.2%), Loricariidae (19.8%), and Pimelodidae (11.1%). In the monitored watersheds, our models predicts that if even one fish stranding event occurs annually, it could results in the stranding of nearly 500,000 individuals. This, in turn, could have severe adverse effects on the ability of these fish families to replenish themselves. We thereby emphasize the importance of adaptive management for flow regulation and incorporating lateral fish passage structures into the riverbed. This approach is essential for achieving sustainable hydroelectric power generation in Brazil while safeguarding the ecological integrity of small rivers and their fish populations.

Intelligent water usage is required in order to target the challenging goals for 2030 and 2050. Hydroelectric power plants represent processes wherein water is exploited as a renewable resource and a source for energy production. Hydroelectric power plants usually include reservoirs, valves, gates, and energy production devices, e.g., turbines. In this context, monitoring and maintenance policies together with control and optimization strategies, at the different levels of the automation hierarchy, may represent strategic tools and drivers for energy efficiency improvement. Nowadays, these strategies rely on different basic concepts and elements, which must be assessed and investigated in order to provide a reliable background. This paper focuses on a review of the state of the art associated with these basic concepts and elements, i.e., digitalization, Industry 4.0, data, KPIs, modelization, and forecast.

The culmination of a century-long dream to link the Great Lakes interior industrial hubs to the Atlantic Ocean, the St. Lawrence Seaway and Power Project stands as one of the largest and most important public works’ initiatives of the twentieth century. Seen as vital to North American commerce and strategic in advancing America’s position on the world stage, the billion dollar seaway and power dam were also a phenomenal feat of engineering involving an unprecedented level of cooperation between Canadian and American agencies and the unrelenting efforts of workers on both sides of the border. Dubbed the greatest construction show on earth, the largest waterway and hydro dam project ever jointly built by two nations consisted of seven locks, the widening of various canals, the taming of rapids, and the erection of the 3216-foot long, 195.5-foot high Robert Moses – Robert H. Saunders Power Dam. In this book, Claire Puccia Parham reveals the human side of the project in the words of its engineers, laborers, and carpenters. Drawing on firsthand accounts, she provides a vivid portrait of the lives of the men who built the seaway and the women who accompanied them. On the fiftieth anniversary of the dedication of the power dam and waterway, this book is a fitting tribute to the hard work and dedication of the project’s 22,000 workers.