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Renewable Energy - page 5

Let there be fuel… from leaves

in Renewable Energy by
artificial leaf

Researchers from the University of Illinois have reasons to rejoice. They did as good a job as Mother Nature. Not only did they manage to reduce carbon dioxide (CO2) in the atmosphere, but they also succeeded in making good use of it by turning it into fuel, thanks to a special leaf. Let us take a glance at this promising technology. Read more

Spanish company invents bladeless wind turbines

in Renewable Energy by
bladeless vortex

bladeless vortexA Spanish company has developed the future of wind power by removing the blades. This invention contains many advantages. Read more

Zero-fuel plane Solar Impulse ends historic round-the-world trip

in Renewable Energy by
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Solar Impulse landed Tuesday in Abu Dhabi, where the aircraft capable of flying day and night with solar energy only as fuel completed a tour of unprecedented world technological challenge. Read more

Renewable energy excess: Germans paid to consume electricity

in Renewable Energy by
Rostock, the first offshore wind power plant in Germany
Rostock, the first offshore wind power plant in Germany

In a world where coal, nuclear and gas are still considered the main sources of energy, Germany managed to use the sun, wind, and rain to provide 87 percent of the energy needs of the entire country . This benefited the population.
This is an astonishing success which the industry does not expect. With a peak in the production of renewable energy, German households paid negative electricity prices. The electricity prices in Germany fell to -€ 30 megawatt per hour throughout the day. Read more

Salt provides energy to 75 000 families in Nevada

in Renewable Energy by

75 000 homes are being powered by solar energy in Nevada 24/7 without the sun. This is a first in the world and has been made possible through the Crescent Dunes project which is a revolutionary plant using molten salt to store energy.This technology is also Read more

The ‘Three Amigos’ vow 50% clean energy by 2025

in Renewable Energy by

trois amigos

United States, Canada, and Mexico will join hands to use greener and cleaner energy like wind, solar and other carbon-free sources of electricity, in order to generate at least 50 percent of its energy from “clean” sources by 2025. This promise was made at the ‘three amigos’ summit in Ottawa last week. (Article appeared in Chicago Tribune on June 28, 2016) Read more

Iceland transforms carbon dioxide into limestone

in Renewable Energy by

iceland-geothermal

It has no climate-related worries. However, Iceland, land of ice and fire, is the first to have created an efficient and inexpensive system of burying carbon dioxide emissions. This ingenious and revolutionary system would convert carbon dioxide into stone quickly, and possibly (surprisingly) .
This is not the first time that researchers are trying to find a solution to get rid of carbon dioxide emissions. However, according to representatives of Reykjavik Energy, who are behind this project called CarbFix, this new method of pumping the CO2 which has been dissolved in the water is crucial to the ecology.
Once pumped from the volcanic rocks of the country into basalt, carbon dioxide was transformed into limestone in a lapse of two years. The researchers themselves were surprised by the speed of this process where the gas was changed to a solid body in just two years. This transformation could have taken thousands of years, if left unattended.
This test took place 25 kilometers east of Reykjavik. The researchers injected 220 tons of CO2 in volcanic layers of up to 800 meters below the surface of the earth. They also added water which has reacted with the gas to form a key factor in mineral reactions, carbonic acid. Samples were taken at several intervals from nearby wells.
“We must fight against rising carbon emissions and it is a technique to store permanently shaped stone,” said Juerg Matter who is the head of this project, at a function at the University of Southampton, UK.

We must fight against rising carbon emissions” – Matter

A potential challenge for the new technique is that it requires large amounts of water; that is, 25 tons for every ton of CO2 buried. However, Juerg Matter considers that sea water could be used, which already abounds on coastal sites.
“In the future, we may consider using it for power plants in places where there are a lot of basalt and there are many of these places,” said Martin Stute, part of the research team at Columbia University, US.
The Intergovernmental Panel on Climate Change concluded that storing carbon dioxide is extremely important in the fight against climate change at a very effective and inexpensive way.

Australian technology to develop wave energy in Mauritius

in Renewable Energy by
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Using waves to produce energy may be soon a reality in Mauritius. A Wave Monitoring Device has been deployed in Souillac (south of the Island) this week by Carnegie Wave Energy Limited. Read more

Portugal powered for 4 days by 100% renewable energy

in Renewable Energy by

portugal EN

The country’s persistence has been rewarded. After years of promoting the use of clean power, it succeeded on running on renewables during four consecutive days. However, a transition to 100% remains far-fetched, partly due to EU’s lack of ambition.

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French cities to be powered by water from rivers

in Renewable Energy by
A tidal HydroQuest installed in Orleans. (Photo credit: Orléans Council)
A tidal HydroQuest installed in Orleans. (Photo credit: Orléans Council)

The water current: difficult to find a cheaper and cleaner source of energy. However, the giant dams are often not accepted by the population. The natural sites are often threatened by these maxi-projects, as in Sivens or even some dwellings. HydroQuest has developed small turbines powered by the river current. This is a local source of renewable energy and more environmentally friendly than the dams.

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