• 5 minutes Iran Says It Arrested 17 CIA Spies, Some Sentenced To Death
  • 9 minutes Will We Ever See 100$+ OIL?
  • 13 minutes Iran downs US drone. No military response . . Just Destroy their economy. Can Senator Kerry be tried for aiding enemy ?
  • 40 mins Platts says if Iran's 2 mm bbls exports comes back on market oil goes to $40 . . . What about new Permian pipelines 2.47 mm bbls coming ? . . . WHAT IF BOTH IRAN AND PERMIAN TOTAL 4.47 mm added bbls . . . OMG !
  • 21 hours Iran Loses $130,000,000 Oil Revenue Every Day They Continue Their Games . . . .Opportunity Lost . . . Will Never Get It Back. . . . . LOL .
  • 13 hours Renewables provided only about 4% of total global energy needs in 2018
  • 6 hours Today President Trump Questioned U.S. Policing the Straits of Hormuz for Rich Asian Countries. Allies Britain and Japan were asked to participate. Said NO. US spends $100 Billion/year Protecting Mideast Shipping Lanes!
  • 3 hours Millions of Barrels of Iranian Oil Are Piled Up in China’s Ports
  • 1 hour So You Think We’re Reducing Fossil Fuel? — Think Again
  • 5 hours N.Y. Governor Signs Climate Bill
  • 1 day Berkeley becomes first U.S. city to ban natural gas in new homes
  • 9 hours Oil Giant Saudi Arabia Is Set to Start First Wind-Power Plant
  • 2 hours U.S. Administration Moves To End Asylum Protections For Central Americans
  • 1 day How is E&P of Marginal Oil on the UKCS Similar to the Shale Oil Operations in the US?
  • 10 hours EIA Reports Are Fraudulent : EIA Is Conspiring With Trump To Keep Oil Prices Low
  • 1 day Trump vs. Xi Trade Battle, Running Commentary from Conservative Tree House
Oil Traders Remain Bearish… For Now

Oil Traders Remain Bearish… For Now

The market seems too well…

It’s Sink Or Swim For U.S. Shale

It’s Sink Or Swim For U.S. Shale

Cracks are emerging in the…

Hydropower Has Higher Environmental Cost Than Believed: Study

Hoover dam

Dam construction involves higher environmental and social costs than previously estimated, a new study has suggested.

The study, cited by Phys.org, was carried out by researchers from Michigan State University and found that "When a large dam is built, the result is a downstream loss of a great many fish species that are important to riverine populations. These communities will have to continue somehow making a living despite dwindling fish stocks for 15 or 20 years, for example, and the costs of these projects don't take such economic and social losses into account," as explained by the lead author of the study, Emilio Moran.

A lot of developed countries have stopped building large-scale dams and have switched to smaller hydropower installations but developing countries such as Brazil are still investing in large dam construction.

"We argue that if the construction of large dams in developing countries is to continue, it must always be preceded by a painstaking assessment of their real cost, including the environmental and social impact they have," Moran noted. The lead author of the study is visiting professor at the University of Campinas in Sau Paulo state in Brazil.

 The environmental costs of large-scale hydropower installations are not new but they don’t seem to get as much attention as other forms of power generation. The Union of Concerned Scientists, for example, cites an article on the environmental and social impacts of the world’s biggest dam, the Three Gorges, in China.

Its construction involved the flooding of a huge region, destroying ecosystems, affecting wildlife habitats and necessitating the relocation of entire communities. The total number of people displaced because of the project was 1.13 million.

What’s more, dams don’t last forever. They need to be retired and dismantled and this bears a high financial cost, too. "The cost of removing a dam once its useful life is over is extremely high, and should be taken into account when computing the total cost of a new hydro development," Moran notes. "If the cost of removal had to be included, many dams wouldn't be built. It would be far more expensive to produce a kilowatt-hour of electricity via a hydro complex with a useful life of 30 to 50 years, like those under construction in Brazil."

By Irina Slav for Oilprice.com

More Top Reads From Oilprice.com:



Join the discussion | Back to homepage

Leave a comment
  • Mitch on January 13 2019 said:
    Why do they only have a 30-50 year life span?? Hoover dam is almost 100 years old... oil and gas, mining and other companies need to carry decommissioning/asset retirement obligations on the books

Leave a comment

Oilprice - The No. 1 Source for Oil & Energy News
Download on the App Store Get it on Google Play