Search Results for Tag: wind turbines
Exploring the North – Not in my backyard
Let’s start with a quick survey: Are you in favor of fewer carbon emissions? Would you opt for renewable energy? Do you support the expansion of renewables? I guess we all agree on this, right? But what would you say to having a wind turbine placed right next to the flowers and trees in your garden? Would you be okay with the presence of a high voltage power line right over your roof? That’s where agreement normally ends. More renewables, yes – but not in my backyard.
That’s a major problem many countries promoting energy transition have to confront at some point. And that’s the case in Sweden as well. Swedes simply love their nature. Many parts of the sparsely-populated country are natural reserves and authorities usually rank their preservation higher than economic profit. This attitude is so pervasive that nobody even thinks of questioning it. The country – which meets 50 percent of its energy needs from nuclear power and the other half from hydro power – has great potential to increase its water power capacity. It’s even exporting the energy.
But at the same time, even energy companies like Vattenfall, already operating several water power plants, don’t attempt to build new ones as they know there is likely to be resistance to new plants that “would simply spoil the landscape.”
However, Europe’s largest on-site wind park is to be built in Sweden. By 2024, Swedish company Svewind plans to build 1,100 wind turbines which together are meant to meet 13 percent of Sweden’s energy demand. So far, 12 turbines are up and running. The ridge 60 kilometers away from Piteå has “the best wind conditions you could possibly have”, says Kenneth Bergquist who is responsible for setting up Svewind’s turbines. A large overhead power line is also located close by so that the energy produced can be further distributed. 24 additional turbines are planned on the site, permission has been granted for 340 in total. But the company has already run into trouble with its first few turbines though they are located in an area, where “very few people live”, says Bergquist.
But the ridge with its clump of turbines is located on the route that reindeer herds normally take. “We don’t know how the reindeers react”, says reindeer herder Patrick Lundgren. It might be that they hide in the forest and don’t dare to pass by or deviate from the usual routes, he says. “It took four to five years for the government and the company to understand our problem. But now we have found a solution. We don’t have to first prove that there is a problem anymore. We talk to each other and have to agree.” The reindeers now have a safe harbor apart from the ridge and the company has pledged financial support for additional food if needed. “May be in 10 years the animals get used to the turbines,” Lundgren says.
What do you think? Should people just get used to turbines and powerlines in their immediate surroundings and accept it as necessary if they want renewable energy? Would you leave your home and move to another place?
DateApril 14, 2013
Exploring the North – rare earths crucial for renewable energy
Below the Scandinavian snow cover, there are even more resources (apart from ice) that make the North special. Mining is a big deal in this region, especially in Sweden. From copper, iron ore to gold, the country is rich in minerals and metals – in fact, it is the largest mining region in Europe. So it’s not that surprising to find some real precious treasures in the Swedish ground – rare earths. They are not only important for smartphone chips and laptop processors, but also play a crucial role in renewable energy technology and thus in energy transition, helping the world to emit less CO2.
These non-renewable resources for renewable energy technology have strange names – dysprosium can be found in magnets that are used to run generators in wind power stations. Ytterbium is used for tubes in reactor technology, neodymium is important for the engines of electro- and hybrid-cars. Terbium can in turn be found in semiconductors important for building solar cells.
They are all found in Norra Karr and Olserum, two (potential) mining sites in Sweden. They are owned by the Canadian mining company Tasmet, which has applied for permission to mine in Norra Karr and is exploring the site in Olserum. Both are the only (so far known) sites in the European Union, where rare earths can be found. So far, the largest producer is China – producing 97 percent of the world’s rare earths in 2009. These metals are used all around the world and demand is projected to rise from 130,000 tons per year in 2012 to 186,000 tons in 2015. One already senses where problems might arise.
At the end of 2010, China restricted export of rare earths for the first time, putting the EU’s energy strategy at risk. What’s more, car manufacturers such as General Motors or Toyota searched for (and claimed to nearly have found) alternatives to become more independant. But so far, there don’t not seem to be alternatives that are feasible on a large scale. Which is why, even small deposits are still lucrative to mine and researchers are keen on finding new ways of mining.
Now you might think this isn’t my problem but rather that of big manufacturers. Well, you are almost right. We all have small earth desposits in old computers, TV monitors and outdated mobile telephones stored in our cellars and attics. Aware of possible shortages of the metals, the electronics industry is aiming to develop feasible recycling methods for rare earths that are still not in place.
So, if some day we do have these proper recycling methods in place, keep your attic-treasures in mind…they just might contribute to something big:
DateApril 13, 2013
TagsChina, energy transition, EU, geopolitics, light bulbs, mining, rare earths, renewable energy, resource, technology, wind turbines
We found this interesting story from The Guardian today: the small German town of Norderstedt in the northern part of the country is getting a new mosque with a unique feature – wind turbines.
In fact, the minarets themselves (where the muezzin calls to prayer are usually sounded) will house glass rotors, about 22 meters high in the sky. The entire project will cost about 2.5 million Euros and include a mosque and cultural center with shops and offices in Norderstedt. It’s all part of architect Selcuk Ünyilmaz’s design to provide the 200-person congregation with a place of worship that’s progressive and eco-friendly.
Tell us what you think of these plans!
DateJune 14, 2011