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Thread: The Remarkable Progress of Renewable Energy

  1. Top | #11
    Gone
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    Quote Originally Posted by BH View Post
    Couldn't we go back to steam for a lot of stuff?
    Nuclear power uses steam.
    Steam isnt an energy source. Its a physical means to turn aheat flow into work.

  2. Top | #12
    Fair dinkum thinkum bilby's Avatar
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    Quote Originally Posted by BH View Post
    Couldn't we go back to steam for a lot of stuff?
    We never went away from it.

    Most electricity generation is done by steam turbines - the choice is do we generate the steam by burning coal, gas, wood, oil, or refuse; or by nuclear fission; or by pumping water into hot rocks; or by parabolic mirrors concentrating the energy of the sun?

    Non-steam generation technologies contribute a fairly small (if growing) fraction of total electricity generation. By far the largest of these is Hydro power, where the turbines are turned by liquid, rather than gaseous water.

    according to Wikipedia:
    In 2014, the share of world energy consumption for electricity generation by source was coal at 40.8%, natural gas at 21.6%, nuclear at 10.6%, hydro at 16.4%, other sources (solar, wind, geothermal, biomass, etc.) at 6.3% and oil at 4.3%. Coal and natural gas were the most used energy fuels for generating electricity.
    ...
    In 2016 while total world energy came from 80% fossil fuels, 10% biofuels, 5% nuclear and 5% renewable (hydro, wind, solar, geothermal), only 18% of that total world energy was in the form of electricity. Most of the other 82% was used for heat and transportation.
    Those 2014 figures add up to 77.3% stuff that makes steam, and 22.7% mostly stuff that doesn't make steam (of which almost three quarters [72%] was Hydro power; and which includes geothermal and biomass [and some of 'etc.'] which belong in the 'steam' column but are not broken out by Wikipedia). The non-steam, non-hydro fraction of electricity generation in 2014 would be in the order of about 2-4% of all power generated that year.

    The 2016 figure includes lots of non-steam fossil fuel use (internal combustion engines, furnaces, etc); But the combined wind and solar figure there cannot be more than a few percent of the total - when rolled in with Hydro it is only 5%, and we saw above that Hydro was in the order of three quarters of that figure only two years earlier.
    Last edited by bilby; 02-21-2018 at 07:01 AM.

  3. Top | #13
    Contributor Cheerful Charlie's Avatar
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    Quote Originally Posted by BH View Post
    Couldn't we go back to steam for a lot of stuff?
    Solar towers use steam, generated by focusing sunlight on the tower to generate steam to run a turbine.
    Cheerful Charlie

  4. Top | #14
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    I am steam powered. Without a hot shower in the morning, I never really wake up.

  5. Top | #15
    Tricksy Leftits Angry Floof's Avatar
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    Quote Originally Posted by Malintent View Post
    I am steam powered. Without a hot shower in the morning, I never really wake up.
    I'm steam powered due to too much exposure to political news. I'm not a very efficient steam engine as most of it comes out of my ears.

  6. Top | #16
    Contributor Speakpigeon's Avatar
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    This thread is running out of steam.
    EB

  7. Top | #17
    the baby-eater
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    Quote Originally Posted by Angry Floof View Post
    I'm steam powered due to too much exposure to political news. I'm not a very efficient steam engine as most of it comes out of my ears.
    If your head isn't spinning then the turbine's probably jammed. Try adding more grease to your diet.

  8. Top | #18
    Administrator lpetrich's Avatar
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    The United States is far behind Europe in offshore wind-energy generation, but there are some efforts on the way, like Ørsted & Eversource Announce 200 Megawatt Connecticut Offshore Wind Farm | CleanTechnica -- alongside some plans for one off the southern shore of Massachusetts. The first US one to go into operation was Block Island Wind Farm, a five-turbine pilot project that started operations in December 2016. However, the Cape Wind project was recently abandoned. It was to be built off the southern shore of Cape Cod, but NIMBY's like the Kennedy family and one of the Koch brothers succeeded in litigating it to death.


    Ørsted (or Oersted) is the new name of DONG Energy (Denmark Oil and Natural Gas), one that reflects its new focus. The name is from Hans Christian Ørsted, someone notable for discovering that electric currents make magnetic fields around them.


    Renewable Energy World - News, Resources, Companies, Jobs and more

    First Floating US Wind Farm May Be Built Off California Coast - Renewable Energy World
    An agency that leads sustainable energy efforts for cities and counties along the state’s Redwood Coast chose a consortium of companies -- including Energias de Portugal SA’s EDPR Offshore North America LLC and Principle Power Inc. -- to build a floating wind farm that may generate as much as 150 megawatts of power, according to a statement from EDPR. The group was one of six bidders, it said.
    Energy Transition – The Global Energiewende
    Will the Energiewende succeed? – Energy Transition
    We could ask people: how would you like to improve your community?

    Instead, the discussion roughly breaks down into three camps:
    • more technology is needed to save us from our current technology, and renewable energy alone will not suffice;
    • renewables will help us live within planetary boundaries at a high enough living standard; and
    • civilization is on a path to destruction because we will fail to do either of the above.

    I roughly fall into the second category. While I don’t deny that we can screw this transition up, I like to remind people where happiness comes from: friendships and community. It specifically does not come from material well-being, at least not once a certain basic level of comfort has been attained (such as clean water, electricity, good housing, and personal safety). So the transition not only needs to reduce carbon emissions, but also strengthen communities and overcome the isolation that people increasingly suffer from (the British Minister for Loneliness could be a step in the right direction).
    Green Technology | Clean Tech & Renewable Energy News
    Trump Targets Chinese Wind, Battery and EV Imports, but With Limited US Impact | Greentech Media
    The U.S.solar industry breathed a sigh of relief yesterday when Chinese-made solar cells and modules were not included on a list of products that could be subject to new Trump administration tariffs. Inverters were also absent.

    Other clean energy technologies did make the list, but the U.S. market impacts appear to be modest.

  9. Top | #19
    Administrator lpetrich's Avatar
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    India Added More Solar & Wind In 2017 Than Coal-Based Capacity | CleanTechnica India A Step Closer To First Offshore Wind Energy Auction | CleanTechnica

    Renewable Energy In Kenya: Meeting The Needs Of An Expanding Population | CleanTechnica -- "Geothermal Renewable Energy in Kenya (8th in the world, with more on the way), Electrification of Kenya’s Trains Boosted by China, Race to Wind Power Part of Renewable Energy in Kenya, Small Solar Projects to Accomplish Big Returns in Kenya"

    Tesla Model Y Competitors ... Vanadium Flow Batteries ... Gulf Stream Crisis ... (#CleanTechnica Top 20) | CleanTechnica
    • Tesla Model Y Expectations & Electric SUV/CUV Overview For The Year 2020
    • “The Future of Energy is Here” Panel Highlights Vanadium Flow Batteries
    • “It’s The Gulf Stream, Stupid!” Climate Scientists Warn Tipping Point Is Near.
    • Largest Tesla Supercharger Site In Netherlands Under Construction (#CleanTechnica Pics)
    • World’s Most Powerful Wind Turbine Installed At Vattenfall’s European Offshore Wind Deployment Centre
    • Volkswagen’s 1st Chinese EV — Built With JAC
    • China X Cleantech — Electric Bus Leadership, Hot EV Startups, Solar Domination, & Other Q1 2018 News
    • Tesla Model 3 — Already #1 In Small & Midsize Luxury Car Sales? (USA)
    • New Nissan LEAF Lands With A Bang In Europe (Europe Electric Car Sales Report)
    • Elon Musk Talks About Tesla Model 3 Production Challenges, Social Media Regulation (VIDEO)
    • Mitsubishi Eclipse Cross Hints At Company’s Future
    • Chinese Battery Giant CATL To Become #1 EV Battery Producer By 2020?
    • Solar Smashes Wind In First German Technology-Neutral Tender
    • This Tiny Czech Company Could Have A Big Impact On Electric Car Industry
    • Top 10 Battery Companies For Chinese Electric Buses
    • BP Selects Tesla As Supplier For New Energy Storage System At Titan 1 Wind Energy Installation
    • How To Haggle For Your Next Electric Car, & Other #ChargingConversations
    • Solar+Storage Project In North Carolina Highlights Improvements In Panel Efficiency
    • Rumor: Tesla Model Y Production To Begin In November 2019
    • Secession Or Not, Big Win For Rooftop Solar In South Carolina

  10. Top | #20
    Administrator lpetrich's Avatar
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    Electric Buses Are Hurting the Oil Industry - Bloomberg -- these are battery-powered buses and hybrid-electric ones, not electric trolleybuses, the kind of bus that gets its electricity from overhead cables.

    Electric buses were seen as a joke at an industry conference in Belgium seven years ago when the Chinese manufacturer BYD Co. showed an early model. ...

    Suddenly, buses with battery-powered motors are a serious matter with the potential to revolutionize city transport—and add to the forces reshaping the energy industry. ...

    The numbers are staggering. China had about 99 percent of the 385,000 electric buses on the roads worldwide in 2017, accounting for 17 percent of the country’s entire fleet. Every five weeks, Chinese cities add 9,500 of the zero-emissions transporters—the equivalent of London’s entire working fleet, according Bloomberg New Energy Finance.
    China got into electric buses because its cities are so smoggy, with about 1.6 million deaths a year attributed to that smog. Buses consume about 30 times as much fuel as cars, and to date, electric buses have displaced about 5 times as much fuel as electric cars.

    Outside China, several cities have been acquiring electric buses, even if not as many as China.

    This is worth mentioning in the context of renewable energy, because the most successful renewable sources make electricity.

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