Quantcast
Business

Huge Hydropower Plant to Harness Seawater and Solar Power in South America's Driest Desert

Lodged between the Andes Mountains and the Pacific Ocean is the Atacama Desert in Chile—the driest non-polar desert in the world.

It certainly isn't a location where you'd expect to find a hydropower plant, but Valhalla, a Chilean company, plans to build Espejo de Tarapaca (Tarapaca Mirror), a 300-megawatt solar and hydropower plant.

Valhalla claims Chile's unique coastal geography make its an ideal location for a solar and hydropower plant.

During the day, the plant will use solar power to move seawater up a tunnel to the top of a mountain, where the water will be stored in a natural reservoir, explained FastCoExist. At night, the water will be released back down, generating power as it falls. This way, the plant can generate power day and night. Pumped storage hydropower plants are not a new concept, but utilizing solar power to pump the water is.

"You need to be able to provide power when it's needed, so it's readily available and dispatchable," Francisco Torrealba, co-founder of Valhalla, told FastCoExist. "If on a particular day you don't have wind and can't provide energy at a peak time, that would be a huge crisis. That's why our concept becomes relevant."

The water will be pumped up to a natural reservoir at the top of a mountain using solar power during the day. Then at night, the water will be released back down, generating power as it falls. Photo credit: Valhalla

The Chilean coast is an ideal location for this type of project. "Chile has the best conditions in the world for solar plants—roughly 15 percent better than Arizona," Torrealba said. "It's really stunning. But Chile also has the best conditions in the world for pump storage running with seawater. That means we can produce flat, steady power at a very reasonable price."

The company won't have to construct dams, either. "We found these natural depressions that we believe were very ancient lakes, but obviously there is nothing there now, it is a desert, that will allow us to store water," the company's co-founder and chief executive Juan Andres Camus told Reuters.

And it's currently cost-competitive with coal. "In Chile, we don't have any subsidies for renewables, so we need to be able to compete straight with coal generation," Torrealba explained. "It's a very Darwinian world—you need to be able to play against coal. Our cost structure is at the price of coal right now."

Valhalla is set to begin construction on the plant in the second half of 2016. They're still in the process of securing funding for the venture, but they estimate they will be supplying electricity to utilities by 2020. They believe the Chilean coastline has the potential to supply power for all of South America.

"The region of Tarapaca can be a leader in solar energy," Torrealba told Tunneling Journal. "And Chile can become an energy superpower in the world."

"We could completely replace all the generation in South America," he told FastCoExist. "You could very easily envision a South America in 20-25 years which has an integrated grid all throughout the continent, in which Chile could be providing very cheap, clean electricity with this combination of pump storage and solar power."

YOU MIGHT ALSO LIKE

Find Out How Close Your City Is to Going 100% Clean Energy

Show Comments ()

EcoWatch Daily Newsletter

Sponsored
Politics
Mike Pence at the 2017 Conservative Political Action Conference in National Harbor, MD. Gage Skidmore / CC BY-SA 2.0

Pence Family Gas Station Failures Cost Taxpayers More Than $20 Million

A failed gas station empire owned by the family of Vice President Mike Pence has left communities in his home state saddled with millions of dollars in ongoing cleanup costs, the AP reported this weekend.

Keep reading... Show less
Animals
Emilie Chen / Flickr / CC BY-ND 2.0

Against All Odds, Mountain Gorilla Numbers Are on the Rise

By Jason Bittel

The news coming out of East Africa's Virunga Mountains these days would have made the late (and legendary) conservationist Dian Fossey very happy. According to the most recent census, the mountain gorillas introduced to the world in Gorillas in the Mist, Fossey's book and the film about her work, have grown their ranks from 480 animals in 2010 to 604 as of June 2016. Add another couple hundred apes living in scattered habitats to the south, and their population as a whole totals more than 1,000. Believe it or not, this makes the mountain gorilla subspecies the only great apes known to be increasing in number.

Keep reading... Show less
Business
WeWork offers small businesses workspace in a collaborative community. Jonathan Wiggs / The Boston Globe via Getty Images

$20 Billion Startup WeWork Goes Vegetarian, Citing Environmental Concerns

Growing office-space startup WeWork is introducing a new flavor of corporate sustainability with its announcement Thursday that the entire company is going vegetarian, CNN Tech reported Friday.

The company of around 6,000 will no longer serve meat at events or reimburse employees for pork, red meat or poultry.

Keep reading... Show less
Climate
Greenpeace activists unfurled two large banners in the high bell tower of Kallio church in Helsinki, Finland on Monday. Greenpeace

'Warm Our Hearts Not Our Planet': Greenpeace Demands Climate Action From Trump and Putin

By Jessica Corbett

As U.S. President Donald Trump and Russian President Vladimir Putin came together in Helsinki, Finland on Monday for a closely watched summit, Greenpeace activists partnered with a local parish to unfurl two massive banners on the Kallio church's bell tower to call on the leaders to "warm our hearts not our planet."

Keep reading... Show less
Sponsored
Climate
Many roofs were torn off when high winds from Hurricane Maria struck Puerto Rico. U.S. Air Force photo by A1C Nicholas Dutton

Hurricane Maria Aftermath: FEMA Admits to Deadly Mistakes in Puerto Rico

The Federal Emergency Management Agency was sorely unprepared to handle Hurricane Maria and the subsequent crisis in Puerto Rico, the agency admitted in an internal performance assessment memo released last week.

FEMA's after-action report details how the agency's warehouse on the island was nearly empty due to relief efforts from Hurricane Irma when Maria made landfall last September, with no cots or tarps and little food and water.

Keep reading... Show less
Politics
Acting EPA Administrator Andrew Wheeler speaks to staff at the Environmental Protection Agency headquarters on July 11 in Washington, DC. Mark Wilson / Getty Images

3 Ways Andrew Wheeler Can Help Restore the EPA’s Dignity and Mission

By Jeff Turrentine

Plenty has been written in the past week about Andrew Wheeler, who has taken over as interim U.S. Environmental Protection Agency (EPA) administrator after Scott Pruitt's abrupt yet way overdue resignation. (Some of us were even writing about Wheeler months ago!)

Keep reading... Show less
Sponsored
Health
Bob Berg / Getty Images

How Summer and Diet Damage Your DNA, and What You Can Do

By Adam Barsouk

Today, your body will accumulate quadrillions of new injuries in your DNA. The constant onslaught of many forms of damage, some of which permanently mutates your genes, could initiate cancer and prove fatal. Yet all is not doomed: The lives we lead determine how well our cells can handle this daily molecular erosion.

Keep reading... Show less
Animals
Sumatran Orangutan Conservation Programme / Maxime Aliaga

300+ Mammal Species Could Still Be Discovered, Scientists Say

By Sara Novak

You can't protect an animal that you don't know exists. Tapanuli orangutans, for example, are found only in the Tapanuli region of Sumatra; they were only identified as a species last year, when scientists found them to be genetically different from other Bornean and Sumatran orangutans. With just 800 left, this newly discovered species is the most critically endangered ape.

It's hard to believe that with only seven great ape species on the planet—Tapanuli, Sumatran and Bornean orangutans, eastern and western gorillas, chimpanzees and bonobos—a species could have gone undiscovered until 2017. But, in fact, new research shows that many mammals still fly under the radar.

Keep reading... Show less
Sponsored

mail-copy

The best of EcoWatch, right in your inbox. Sign up for our email newsletter!