SustainableEnergy
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Germany plans to squeeze hydroelectric power out of a coal mine
As coal energy falls out of favor in much of the world, one defunct mine in the heart of Germany's coal country is preparing for a new life as a sustainable power plant. As Bloomberg reports, the Prosper-Haniel mine in the state of North-Rhine Westphalia is scheduled to shut down in 2018 when government coal subsidies end and the operation that has provided jobs for the town of Bottrop since 1974 becomes too expensive to operate. But the town could continue providing power to the region while leading the next wave of renewable energy developments by converting its mine shafts into a pumped hydroelectric storage station.
First solar-geo plant blooms in Nevada's high desert
Drive west on US Route 50 through a stretch of Nevada highway known as "The Loneliest Road in America" and you'll eventually find yourself in the rural county of Churchill. Once a solitary leg in the Pony Express route, irrigation transformed swaths of Churchill's high desert areas into thriving agricultural communities more than a century ago. Fast forward to today and Churchill finds itself playing host to yet another interesting dichotomy -- a first-of-its-kind power plant that generates electricity by harvesting renewable resources from both earth and sky. %Gallery-159924%
Delaware Ph.D. student hopes to solve energy woes with renewable hydrogen production
Hydrogen fuel is a fickle mistress. On one hand, it teases us with the promise of renewable energy and a cleaner tomorrow. On the other hand, it's most often produced with natural gas as the source -- hardly the clean break from fossil fuels that many had envisioned. Fortunately, there are other methods to harness this abundant element, and a doctoral student at the University of Delaware may have created a worthwhile process. Similar to previous research we've seen -- which relies on ceric oxide and energy from the sun -- Eric Koepf has designed a reactor that combines zinc oxide powder, solar rays and water to derive hydrogen as a storable energy source. Most intriguing, it's thought that the zinc oxide byproduct from the reaction will be reusable -- a potential gateway to sustainable energy. Koepf will spend the next six weeks in Zurich at the Swiss Federal Institute of Technology, where his reactor prototype will be put through its paces to determine its efficiency and effectiveness. If successful, his advisors envision that one day, we may see giant versions of Koepf's reactors producing hydrogen on an industrial scale. We certainly won't fault them for dreaming big.
Strawberry Tree brings free, solar-powered charging to Belgrade's BlackBerrys, more (video)
Dead battery in Belgrade? Head to the city's Obrenovac district, where a group of students has developed the world's first public charging station powered entirely by solar energy. Known as the Strawberry Tree, the structure's 16 ports support a variety of handhelds, allowing pedestrians to juice up their cell phones in just ten to 15 minutes, at no charge. Its built-in batteries can also store up to a month's worth of back-up energy, enabling the station to hum along at night, or even during Serbia's less sunny seasons. In the first 40 days following its November launch, the Strawberry Tree logged some 10,000 charging sessions -- or about ten charges per hour. Creator Miloš Milisavljevic was just 17 years old when he came up with the idea, and now, at the ripe old age of 22, is looking to plant new stations across other Serbian cities, through his Strawberry Energy NGO. He says these installations won't generate much revenue from consumers, but that's not really the idea: "Energy from the sun is free, and it would be unethical to charge people to use the Strawberry Tree...We are trying to inspire young people to think about the source of the energy they use, and behave and act responsibly." You can check out the Strawberry Tree in the video below, or find out more about Milisavljevic's ideal-driven endeavors in the full PR.
