Wave Star: Kinetic Wave Power

Meet “Wave Star” of Denmark. It is a facility designed to convert kinetic wave power into electricity.

Wave Star is equipped with kinetic-energy harvesters called “floats.” The floats move up and down with the kinetic motion of the waves. The motion of the floats is transferred via hydraulics to rotate power generators. Their facility enables continuous energy production and a smooth output.

The full scale device will be equipped 20 floats of 10 m (33 ft) in diameter. Each power station will be able to produce 6 megawatts of energy, a single machine providing enough energy for roughly 4000 homes.

In the event of a storm, the floats can be lifted to a safe position. The facility could also be upgraded to utilize wind and solar power. The power stations are planned to hit the market this year!

Check out this video for more information!

Thanks to @SeedsofLove.Life for the share! <3

#ActOnClimate

Today at the LA State Historic Park #ActOnClimate hosted a beautiful rally and round-dance for Climate Justice.

The mission: “Together, we will rally for the steps we know are necessary to deliver on the goals of Paris: moving to 100% renewable energy, stopping new fossil fuel projects, divesting from coal, oil and gas companies, and more.”

Among the great speakers who came before the crowd included: Jack Eidt, Co-Founder of SoCal 350 Climate Action; Lydia Ponce, Co-Director of American Indian Movement Southern California; Paul Koretz, Council Member of City of Los Angeles; Martha Dina Arguello, Executive Director of Physicians for Social Responsibility and Matt Pakucko, Co-Founder of Save Porter Ranch.

Check out 350 to get involved in events in your local community! (https://350.org)

 

100 Percent Green California

California’s Senate leader wants the Golden State to shift to 100 percent renewable electricity by 2045, pushing it to lead the country in grabbing that green power goal.

Environmentalists are cheering California Senate President Pro Tempore Kevin de León’s (D) plan to double, and accelerate, the state’s current renewables mandate of 50 percent by 2050. Oscar-winning actor Leonardo DiCaprio even tweeted his thanks to de León among his 17 million followers.

The nation’s most populous state switching to fully renewable electricity sounds idealistic. But several experts said it can be done — with a lot depending on definitions, technological advancements and acceptable price tags.

“2045 is a long way away,” said Severin Borenstein, economics professor at the University of California, Berkeley’s Haas School of Business. “A lot could happen between now and 2045.”

Energy storage through batteries “could get a lot cheaper. That could make the goal much more attainable and much more cost-effective,” he added. Wind and solar energy already are close in price to natural gas, he said. “If you could actually store the power cost-effectively, then you could make it work much more effectively.”

Others warned major expenses would ensue. Large-scale solar and wind projects often go in deserts or other open areas, requiring added infrastructure to move the power to cities, said Evan Birenbaum, who led the environmental strategies program at Los Angeles-area utility Southern California Edison Co. before leaving in 2014. He now heads Chai Energy, which focuses on reducing household energy consumption.

“You would need to build new transmission lines to support the incoming [renewable] power,” Birenbaum said. “Old power lines might not be able to support it.”

Utility substations also likely would need upgrades, he said, adding, “You’re talking about many billions of dollars that have to be invested in that new renewable energy future. It’s the ratepayer who will have to pay for that.”

Borenstein said that calculating how much it will cost nearly 30 years from now is “nearly impossible to answer. … Imagine going back 30 years,” when the internet-connected cellphones used now didn’t exist.

“It’s very hard to predict technology 30 years in advance,” he added.

FFT: Although goals and estimates for 100% renewable energy may not be accurate to the year, the challenge gives us perspective as we progress towards the goal. Who knows, maybe we’ll even beat it.

( Visit the full article at the Scientific America )

https://www.scientificamerican.com/article/can-california-go-100-percent-green/

 

First Renewable Energy Island

A tiny Spanish island with just 10,000 residents is about to do something amazing. El Hierro, the smallest of the Canary Islands, plans to completely sever ties with the traditional power grid and move entirely to renewable energy. The island plans to become completely self sufficient next month when its 11.5 megawatt wind farm kicks into gear. El Hierro already has a water turbine that generates electricity, and the added wind power will enable the island to go totally off-grid.

The island actually generates enough power for its residential needs with just the water turbines, but the wind power allows El Hierro to have a little extra power, which will be used to pump fresh water from near the harbor on the island to a reservoir in a volcanic crater 2,300-feet above the sea. When there is not enough wind for electricity needs, that water will be released to feed down into the water turbines to generate more energy, so the island will always have enough power to keep things running.

Imagine if more islands are able to farm such energy. Over time and trials of projects like these, we will learn of ways to make building out wind turbines to be more efficient and effective. In a closed environment such as islands this could be rather optimal.

(Check out the source article on inhabitant for more information!)

Offshore Wind

When engineers faced resistance from residents in Denmark over plans to build wind turbines on the Nordic country’s flat farmland, they found a better locale: the sea. The offshore wind farm, the world’s first, had just 11 turbines and could power about 3,000 homes.

That project now looks like a minnow compared with the whales that sprawl for miles across the seas of Northern Europe.

Off this venerable British port city, a Danish company, Dong Energy, is installing 32 turbines that stretch 600 feet high. Each turbine produces more power than that first facility.

It is precisely the size, both of the projects and the profits they can bring, that has grabbed the attention of financial institutions, money managers and private equity funds, like the investment bank Goldman Sachs, as well as wealthy individuals like the owner of the Danish toymaker Lego. As the technology has improved and demand for renewable energy has risen, costs have fallen.

Visit source link for full article!

New Wind

A French company called New Wind is installing tree-shaped wind turbines at the Place de la Concorde in Paris, France. The company’s founder, Jérôme Michaud-Larivière came up with the idea while in a Paris square, when he “saw the leaves tremble when there was not a breath of air.” He hopes the trees can be used to exploit small air currents flowing along buildings and streets, and could eventually be installed in people’s yards and urban centres.

He is the first to admit the efficiency of the trees is low compared to more consistent currents higher up, but believes the £23,500 trees are more viable and less intrusive than ‘monstrous’ conventional wind turbines. The 26 foot high trees, which use tiny blades inside the ‘leaves’, could potentially be profitable after a year of wind speeds averaging 7.8 mph. They can generate electricity in wind speeds as low as 4.5 mph. Visit the link below for more photos and a video.

(Source: alternative-energy-news.info )