Sentences with phrase «hydropower dams»

«While the number of small hydropower dams in operation or planned for tributaries to the Nu River is unreported,» the authors note in this study, «our field surveys indicate that nearly one hundred small dams currently exist within Nujiang Prefecture alone.»

«There is a tsunami of hydropower dam constructions happening here and nobody really knows about it,» said Britton Caillouette, director of «Blue Heart», a documentary that focuses on efforts to halt the hydropower plans.

The researchers will contribute to that work this spring when they start to study the ecological effects of multiple small hydropower dams in southern Brazil.

Proposed hydropower dam constructions endanger Europe's last wild rivers and some diversity hotspots, writes Umberto Bacchi of Thomson Reuters Foundation.

«Individually, large hydropower dams will always cause greater environmental impacts, but with rapid growth of the small hydropower sector, our rivers might just suffer from many small cuts.»

The comments appeared to confirm what geologists, biologists and environmentalists had been warning about for years: building a massive hydropower dam in an area that is heavily populated, home to threatened animal and plant species, and crossed by geologic fault lines is a recipe for disaster.

Systems engineers have had a hand in projects as diverse as hydropower dam construction and China's social credit system, a vast effort aimed at using big data to track citizens» behavior.

Their way of life was drastically altered when a series of four hydropower dams built between 1908 and 1962 cut off hundreds of miles of salmon spawning and rearing habitat in the Klamath's upper drainage.

«Hydropower dam energy without sacrificing Mekong food supply: New research offers solution.»

Cambodia joins a lengthening list of nations around the world that are reassessing big hydropower dams in an era when wind and solar power are less expensive, much easier to build, less damaging, and far less vulnerable to droughts and floods.

She authored legislation allowing Canton to operate hydropower dams, and she supports renewable energy sources and funding for cleaning polluted properties.

Additionally, countries that do classify small hydropower dams do so based on only their energy capacity and consequently ignore other factors during the licensing decision that might contribute to environmental impacts.

University of Washington researchers have published the first major assessment of small hydropower dams around the world — including their potential for growth — and highlight the incredibly variability in how dams of varying sizes are categorized, regulated and studied.

As a result, many private landowners and corporations can leverage easier environmental permitting to build small hydropower dams for a fraction of the time and cost of large dams.

COPENHAGEN — Revolutionizing the energy industry to achieve a target concentration of greenhouse gases in the atmosphere of no more than 450 parts per million (ppm) would require building 17 nuclear power plants a year between now and 2030; 17,000 wind turbines a year; or two hydropower dams on the scale of Three Gorges Dam in China, according to the International Energy Agency.

In Brazil, for example, there are cases of small hydropower dams producing the same amount of power, but varying greatly in the sizes of reservoirs behind them.

Whether it's offsets from no - till farming that would have happened anyway from the Chicago Climate Exchange or offsets from hydropower dams in China that would have been built anyway under the terms of the Clean Development Mechanism of the Kyoto Protocol, it's all a bit of a shell game at present.

A planned hydropower dam is the latest threat.

The drought has also severely reduced the flow of rivers that feed hydropower dams, leading to power rationing and even blackouts in the region.

A 320 - megawatt PV project — the world's largest — was completed in late 2013 alongside the Longyangxia hydropower dam in Qinghai.

One scenario includes heat pumps — which are used in place of combustion - based heaters and coolers — but no hot or cold energy storage; two add no hydropower turbines to existing hydropower dams; and one has no battery storage.

This will have a knock - on effect on the animal species that inhabit these islands, as well as having serious implications for the carbon balance of hydropower dams relative to other sources of energy.

In most cases, decommissioning and removing hydropower dams is good for rivers, reviving natural river flows and restoring upstream access to spawning fish.

All the good locations are already developed: The available number of potential hydropower dam sites is limited by geography, and in the United States, the most viable sites have already been developed or are off limits.

Hydropower dams play a role in our nation's energy portfolio.

Other flexible low - carbon resources could include geothermal and hydropower dams with large reservoirs.

Large - scale hydropower dams certainly can provide a lot of power and are a renewable resource — assuming the water source doesn't decline, an real concern with climate change but something beyond the scope of this piece.

Hydropower dams provide power to the Pacific Northwest, but in some cases, that benefit is outweighed by the damage the dams do to rivers.

via: Tibetan Plateau China, Hydropower Dam May Have Triggered Massive China Earthquake China Mulls Building Hydroelectric Dams in Southern Tibet China Builds Dam on Indus, Doesn't Tell Pakistan Goldman Environmental Prize Winner Yu Xiaogang on Hydropower and Community in China China Earthquake Threatens Nearby Dams, Environment Hydropower on China's Nu River, Alternatives to Huge Dams (Video)

And Congress recently limited support for the types of destructive hydropower dams that often displace communities and decimate whole ecosystems.

«With the deluge of proposed hydropower dams and diversions in the Balkan peninsula we are looking at what could be irreversible environmental destruction»

However, these massive hydropower dams have in some cases proved costly in both human and environmental terms, provoking wide opposition.

Thirteen large hydropower dams are proposed for the main stream of the Nu River in Tibet and Yunnan Province in China.

«We have identified some important gaps in policy and science that should be filled to better manage small hydropower dams and to have science that really informs policy.»

Dams are a major problem for some of these migrators — there are at least 37,600 hydropower dams in rivers globally, with hundreds more in progress.

My gut reaction was to be skeptical: Solar has been growing rapidly, especially in California, but even with nearly 3,000 MW of photovoltaic (PV) and solar thermal generation in place, it's still well short of the scale of California's 10,000 MW of hydropower dams, especially when you consider that the latter aren't constrained to operate only in daylight hours.

The Oswego Common Council is expected to vote tonight on a resolution taking away Brookfield Renewable Power's right to regulate an area of the Oswego River near a hydropower dam it operates.

But the dorado, which can grow to more than 2 meters in length, is disappearing from those waters, and scientists blame two hydropower dams that Brazil erected a decade ago on the Madeira River.

Her team documented 142 hydropower dams that are operating or under construction on headwaters in the western Amazon Basin, and another 160 that are under consideration.

Ecologists analyzed 142 hydropower dams in the western Amazon basin and concluded that they are interfering with fish migration and sediment flow.

Hydropower dams may conjure images of the massive Grand Coulee Dam in Washington state or the Three Gorges Dam in Hubei, China — the world's largest electricity - generating facility.

Nearly 100 hydropower dams are planned for construction along tributaries off the river's 2,700 - mile stretch, which flows through Burma, China, Vietnam, Laos, Thailand and Cambodia.

Somewhere along the upper Aragón River, between the jagged peaks of the Pyrenees and a hydropower dam, conservation biologist Madis Põdra and his colleagues will release 10 or 12 captive - born European minks (Mustela lutreola) next week into a mink's idea of heaven: a pristine patch of Spanish wilderness with 150 kilometers of waterways.

At the time of writing more than 99 % of the world's energy storage was in pumped hydro (not considering water in hydropower dams as energy storage).

«With the deluge of proposed hydropower dams and diversions in the Balkan peninsula we are looking at what could be irreversible environmental destruction, but there is very little awareness of this issue in Europe or globally,» said Ryan Gellert, general manager, EMEA, of outdoor clothing company Patagonia, which backed the film financially.