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For everything related to renewable energy and clean tech.

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Science and Tech
  1. What's new in this club
  2. The cost of solar panels keeps dropping! In 2017, the price of high-efficiency solar panels fell by 37 percent, from 72¢/W to 45¢/W in the US market. The falling price is the result of higher demand among consumers, Chinese investment in high-efficiency solar panel production, and technological advancements that have made solar panels more efficient. Inhabitat reports: The cost of high-efficiency solar panels fell 37% in 2017 Great stuff!
  3. Here are some fresh new numbers showing the transformation and growth of renewables in the US: Renewable energy tops 18 percent of U.S. electricity grid, rivaling nuclear Renewable energy, such as hydroelectric dams and wind and solar farms, is now close to surpassing the power generated by nuclear energy in the US. In 2017, renewable energy accounted for 18 percent of electrical generation - more than double what they did a decade ago. Meanwhile, nuclear energy represented 19.7 percent of the total electrical generation on the grid. Although renewable energy isn't receiving any support from the Trump administration it's clear that renewables are unstoppable - even for Trump and his buddies in the fossil fuel industry. And this expansion of renewables is already showing results, the country's greenhouse gas emissions are now at their lowest level since 199. But much more can - and should - be done! It's a shame that political ideology, corporate and fossil fuel interests are allowed to slow down this transformation of our electrical grids.
  4. Actually, this is a myth. Let me give you some facts about wind power and birds: Cats are actually much more lethal to birds than wind turbines. "It takes 30-plus turbines to reach a kill rate of one bird per year, according to a recent report by the U.S. National Academy of Sciences on the environmental impacts of wind-energy projects..." Fossil fuel and nuclear power systems kill 15 times more birds than wind farms. "...for every one bird killed by a wind turbine, nuclear and fossil fuel powered plants killed 2,118 birds." Massive Offshore Wind Turbines Safe for Birds. "Infrared monitoring shows that savvy seabirds steer clear of wind turbines." Wind turbines don’t kill birds, but climate change will. "The study found at least 950 entire species of terrestrial birds that will be threatened with extinction as a result of climate change..." Offshore wind farms are good for wildlife, say researchers. "Dutch study finds birds avoid offshore wind turbines, while marine life finds shelter and new habitats."
  5. This is great news! I am an advocate of green energy and i know its a win-win solution for both environment and for us users. Although there's a lot of technicalities that has to be improved like energy storage and efficiency specially on residential type systems. This is still a big step towards a better future. I have been using solar energy as a secondary system at home. We all now that solar energy systems in the market is expensive, that's why i decided to built my own system. It may not be as efficient as in the market but i'm making progress. I just hope that these technology will evolve faster for more efficient and affordable systems.
  6. I hope the solar cells become affordable also, I really wanted to have that kind of source of energy in our house. All I have to do the maintenance of that cells, and I will don't have the monthly bills anymore. Right now, I only have the energy coming from the wind.
  7. Let's kill this myth: renewable energy gets subsidies whereas fossil fuels and nuclear energy don't Short answer: Fossil fuels and nuclear energy have gotten subsidies for decades. Actually, fossil fuels have received government subsidies for 100 or so years. These days, fossil fuel subsidies reportedly total approximately $5 trillion globally each year. Despite tremendous health costs, climate costs, and countless premature deaths caused by pollution, these super rich and overly mature industries receive subsidies that serve no genuinely useful purpose for society. Renewable energy also receives subsidies, but not to the same degree. Longer answer: https://cleantechnica.com/2018/01/26/renewable-energy-doesnt-get-subsidies-fossil-nuclear-sources-gotten-continue-get/
  8. Renewable energy is crushing nuclear energy - and all other forms of power from dirty fossil fuels. There is only one new nuclear plant being built in the US, and all the existing nuclear plants are “bleeding cash” and struggling to stay competitive against renewables. In the draft report from the US Department of Energy that was leaked this past summer, even the Trump government admits that fossil fuels and nuclear are simply no longer economic compared to clean and modern renewable energy sources. And a recent study from the financial firm Lazard Ltd. shows that wind and solar energy are now cheaper than fossil fuels such as diesel, nuclear, coal, and in most cases natural gas. Clearly, governments and utilities around the world will from now on have a hard time justifying anything but renewable energy. So investing and building new renewables is now cheaper than just maintaining old nuclear and fossil fuel plants. This study was based on numbers from North America, a developed country where conventional energy sources such as nuclear and fossil fuels are less expensive to operate. In developing countries, conventional energy sources are much, much more expensive to build and operate. So the advantage renewable energy has in developed countries, such as the US, is even bigger in developing countries like China and India.
  9. On Wednesday this past week, wind produced 23% of Europe's electricity (and on a working day!). Germany 60%, Denmark 48%, Spain 37%, Austria 32%, and Netherlands 23%. Isn't that amazing? Don't let anyone tell you that renewable energy isn't a viable alternative to dirty fossil fuels. The source is here, if you want to check out how much electricity Europe generates from wind every day: https://windeurope.org/about-wind/daily-wind/
  10. Here's an interesting article on how renewable energy can cause power prices to go negative: Power Prices Go Negative in Germany, a Positive for Energy Users. This story also reveals how our energy grids and battery technology is lagging behind the explosive growth of renewables in recent years. Thanks to low demand coupled with unseasonably warm weather and strong breezes over the weekend, wind power in Germany produced so much electricity that power prices dropped below zero "for much of Sunday and the early hours of Christmas Day". Ordinary consumers like you and me never experienced this price dip, but it's not the first example (and far from the last) of negative power prices in energy markets that have invested heavily in cleaner and renewable sources of electricity. These negative power prices show how our technology and our power grids have not yet been able to adapt to the increasing amounts of renewable energy being produced. Mainly it's our battery and distribution technologies that are lagging behind: But while we wait for further advancements in battery capacity and investments into smarter and better energy grids, we can still do a lot to mitigate these uneven effects: It's also worth pointing out, I think, that renewable energy is a decentralized energy source and doesn't work like older, larger and more centralized forms of energy. Renewable energy requires a different approach, where the consumers are also the producers of the power generated.
  11. I support solar energy over the use of windmills, for many reasons, one of which is the fact that windmills kill off a mass amount of flying animals(birds, bats, etc). Solar energy cannot be wrong, why wouldn't we harness the energy coming from our natural and God given sunlight? It only makes sense, and keep the air cleaner! Not to mention the cost decrease as discussed above. I also think we should find a way to harness the energy of the tides in a safe and natural as possible way.
  12. According to the Bloomberg New Energy Finance outlook, solar power is becoming increasingly affordable and in just a few years it could be cheaper than coal and even natural-gas plants, almost everywhere around the world. This means that solar power is going to kill fossil fuels much faster than we have previously thought. And it is not just solar power that is becoming an increasingly cheap energy source. Even in developing countries, like China and India, solar power is expected to start providing cheaper electricity as soon as the early 2020s. “These tipping points are all happening earlier and we just can’t deny that this technology is getting cheaper than we previously thought,” said Seb Henbest, a researcher at BNEF in London and lead author of the report. Even the cost of offshore wind farms are bound fall, the report concludes. There's no doubt about it: renewable energy is the future!
  13. The IEA keeps getting their solar energy predictions wrong in their yearly World Energy Outlook reports. Check out this graph by Auke Hoekstra, from the Eindhoven University of Technology, which shows how solar energy in reality is steeply increasing while the IEA keeps giving very conservative growth predictions, year after year. Why is it that the IEA keep getting their predictions wrong?
  14. The world's biggest wind turbines have just come online at the Burbo Bank wind farm, off the northwest coast of England. And they are huge. Each wind turbine is fitted with three 80-meter-long blades. And a single revolution of one of these blades can power a single home for 29 hours. The Danish firm DONG Energy have installed 32 of these massive turbines, and together they will generate enough power for 4 million homes. Learn more here: The World’s Largest Wind Turbines Have Started Generating Power in England Renewable energy is getting better, faster, stronger!
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