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Thread: The Remarkable Progress of Renewable Energy

  1. Top | #641
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    Quote Originally Posted by fromderinside View Post
    Who said anything about earth's surface?

    Put the panels in space so they don't encroach on earth access to normal solar effects. Design a plug and cable system to bring the energy to earth by traveling wire. Build as many space solar farms using materials harvested from asteroid belt as are needed to support of whatever population you choose to remain on earth. Hell put them on the moon to cut costs of keeping them in orbit.Wallah!!! Running a more or less friction free cable from moon to earth should be child's play. Cables can be built from carbon materials that withstand stretching and heat loads necessary. Just make the top one tenth of one percent of money holders pay two cents on everything they hold over 100 million* and it's paid for many times over.

    *Elisabeth Warren.
    We don't have the cables yet. Even if you ignore the conductivity requirement you're talking about a cable that could be used for a space elevator. An Earth-based space elevator is impractical even with our strongest cables to date.

    And note that trying to run a cable from the Moon to the Earth runs into myriad headaches beyond just the cable strength.

  2. Top | #642
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    Quote Originally Posted by fromderinside View Post
    Who said anything about earth's surface?

    Put the panels in space so they don't encroach on earth access to normal solar effects. Design a plug and cable system to bring the energy to earth by traveling wire. Build as many space solar farms using materials harvested from asteroid belt as are needed to support of whatever population you choose to remain on earth. Hell put them on the moon to cut costs of keeping them in orbit.Wallah!!! Running a more or less friction free cable from moon to earth should be child's play. Cables can be built from carbon materials that withstand stretching and heat loads necessary. Just make the top one tenth of one percent of money holders pay two cents on everything they hold over 100 million* and it's paid for many times over.

    *Elisabeth Warren.
    "Scaling solar power is straightforward. All we need is a miraculous leap forward in materials science, revolutionary changes to our taxation system, and a collective industrial effort eclipsing both WW2 and the space race."

  3. Top | #643
    Mazzie Daius fromderinside's Avatar
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    I take the position that money is guaranteed by military might. Given the best military is the one with the beat weapons as has been demonstrated by the naming of ages, stone, copper, bronze, iron, etc. I suggest best military is actually motivated by the best empirical regime. So we set aside money as motivator and presume science and engineering superiority be the objectives for governing. Will miracles never cease?

  4. Top | #644
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    Quote Originally Posted by bigfield View Post
    Quote Originally Posted by fromderinside View Post
    Who said anything about earth's surface?

    Put the panels in space so they don't encroach on earth access to normal solar effects. Design a plug and cable system to bring the energy to earth by traveling wire. Build as many space solar farms using materials harvested from asteroid belt as are needed to support of whatever population you choose to remain on earth. Hell put them on the moon to cut costs of keeping them in orbit.Wallah!!! Running a more or less friction free cable from moon to earth should be child's play. Cables can be built from carbon materials that withstand stretching and heat loads necessary. Just make the top one tenth of one percent of money holders pay two cents on everything they hold over 100 million* and it's paid for many times over.

    *Elisabeth Warren.
    "Scaling solar power is straightforward. All we need is a miraculous leap forward in materials science, revolutionary changes to our taxation system, and a collective industrial effort eclipsing both WW2 and the space race."
    Maybe no revolutionary changes needed, but just wait a few thousand years and the capability will probably be ready. For the foreseeable future, though, nuclear is the best option by far - barring perhaps strong AI, because in that case, all bets are off.

  5. Top | #645
    Mazzie Daius fromderinside's Avatar
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    Ahah Angra Mainyu. I thought using field constrained transmission of energy like how we force focus of lasers on targets in in fusion research a bit much.

    Containing the sun https://news.harvard.edu/gazette/sto...fusion-energy/

  6. Top | #646
    Administrator lpetrich's Avatar
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    The slow, inexorable rise of green hydrogen – pv magazine International - "The International Renewable Energy Association says the integration of hydrogen into the energy transition will not happen overnight and electrolysis costs will not be halved until the 2040s. That hydrogen and related products could revolutionize the world energy landscape, however, is not in doubt."
    Given what rapid development we've seen in technologies related to renewable energy, that is likely to be very pessimistic. Electrolysis is a vital part of synfuels development: power-to-gas and power-to-liquids.

    New aluminum batteries for renewables storage – pv magazine International
    The devices, developed by a European research team, are said to have twice the energy density of conventional aluminum devices. The scientists used a cathode made of anthraquinone, instead of one based on graphene, increasing energy density.

    Scientists from Sweden’s Chalmers University of Technology and Slovenia’s National Institute of Chemistry say they have created aluminum batteries with higher energy density and potentially wide renewable energy storage applications.

    Compared to typical aluminum batteries, which use an aluminum anode and graphene cathode, the new device features an organic, nanostructured cathode made of carbon-based molecule anthraquinone.
    It's great to see research on alternatives to lithium-ion batteries. That's because lithium is a very rare element, and it looks like this kind of battery is composed only of very common elements.

    Solar-plus-storage to provide all the daytime electric needs of nation state – pv magazine International
    A 6 MW solar plant and 5 MW/2.5 MWh storage system are set to increase the share of renewable electricity on the Pacific island of Nauru from 3% to 47%. The $27 million project is being supported by the Asian Development Bank (ADB).

    The Republic of Nauru, like many Pacific Ocean island states relies almost entirely on diesel generators for its power.
    Renewable energy means no more imports of diesel fuel for electricity generators. Such generators could remain as a backup, however.

    South Carolina city kills residential solar because math is hard – pv magazine USA
    The city of Georgetown has instituted a $50 monthly “accounting charge” on all residential solar customers because the city’s accounting software can’t comprehend the concept of energy being sent to the grid.

  7. Top | #647
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    America’s largest floating solar project completed – pv magazine USA - "Ciel & Terre USA has completed a 4.4. MW floating solar array in Sayreville, New Jersey, the largest of such a project in North America. This is an important step for a technology that NREL predicts could reach 9.6% of current electricity generation."

    "Floatovoltaics" are a good way to use water surface. Such systems are also good for lowering evaporation rate.

    India cancels plans for huge coal power stations as solar energy prices hit record low | The Independent - 'India’s solar tariffs have literally been free falling in recent months'
    India has cancelled plans to build nearly 14 gigawatts of coal-fired power stations – about the same as the total amount in the UK – with the price for solar electricity “free falling” to levels once considered impossible.

    Analyst Tim Buckley said the shift away from the dirtiest fossil fuel and towards solar in India would have “profound” implications on global energy markets.
    That is very welcome. Being able to win on economics is very helpful, because it means that one does not have to make an awkward choice between (1) economics and (2) climate-change and fossil-fuel-depletion concerns.
    Measures taken by the Indian Government to improve energy efficiency coupled with ambitious renewable energy targets and the plummeting cost of solar has had an impact on existing as well as proposed coal fired power plants, rendering an increasing number as financially unviable.

    ...
    He said about it has been accepted that some £6.9bn-worth of existing coal power plants at Mundra in Gujarat were “no longer viable because of the prohibitively high cost of imported coal relative to the long-term electricity supply contracts”.

    This, Mr Buckley added, was a further indication of the “rise of stranded assets across the Indian power generation sector”.
    Existing ones becoming economically unviable? That is VERY welcome news. That's because the construction of existing ones is at least partially paid for, reducing their effective cost.

  8. Top | #648
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    Global solar market to see 'spectacular growth' over next 5 years - Electrek - given the track record so far, I would not be surprised.
    The report forecasts that the world’s total renewable-based power capacity will grow by 50% between 2019 and 2024. This increase of 1,200 gigawatts — equivalent to the current total power capacity of the United States — is driven by cost reductions and concerted government policy efforts. Solar PV accounts for 60% of the rise. The share of renewables in global power generation is set to rise from 26% today to 30% in 2024

    The commercial and industrial sectors will account for three-quarters of new installations over the next five years. This is due to economies of scale and bigger savings on electricity costs. The number of residential solar rooftop systems on homes is expected to more than double to some 100 million by 2024.
    Renewables set for 'meteoric' growth. But that's not enough to fight climate change - CNN
    However, the IEA warned that the expansion into renewables will still be "well short" of what's required to meet aggressive goals aimed at fighting climate change and curbing air pollution.

    "They still need to be growing far more strongly in order to achieve long-term sustainable energy goals," Fatih Birol, the IEA's executive director, wrote in the report.

    The shift towards clean energy has been significant, including in the United States, where power plants are quickly dumping coal in favor of solar, wind and natural gas.
    US electric powerplants will consume less coal than at any time since 1978. While coal is on the way out in the US, it is still big elsewhere.
    Renewables are back on track this year, with the IEA projecting 12% growth, the fastest in four years. That pace is being driven by solar power, which is being rapidly embraced in the European Union, India and Vietnam. The IEA also pointed to higher onshore wind growth in the United States, the EU and China.
    Seems like a massive effort will be needed, a "Green New Deal".

  9. Top | #649
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    Offshore wind set to be a $1 trillion business by 2040, the IEA says with capacity going up by a factor of 15.
    Global offshore wind capacity currently stands at 23 GW, according to the IEA, with 80% of this based in Europe, a world leader in the sector. The agency added that around 150 new offshore projects were slated for completion during the next five years.

    “In the past decade, two major areas of technological innovation have been game-changers in the energy system by substantially driving down costs: the shale revolution and the rise of solar PV,” Fatih Birol, the IEA’s executive director, said in a statement Friday. “And offshore wind has the potential to join their ranks in terms of steep cost reduction.”
    So welcome to see such great growth. Though neither wind turbines nor solar panels is very young, they both have been growing at a rate that is typical of new technologies.

    Batteries aren't new either, but I'm seeing the same sort of growth in recent battery technologies.

    India plans world's largest floating solar power plant at 1GW | Recharge - "A 1GW plant would dwarf the world’s current largest floating PV array, a 150MW project in Anhui, China." - more and more floatovoltaics

    Commercial rooftops will lead renewables growth in the next five years – pv magazine International - "Although the International Energy Agency’s latest renewables report forecasts impressive solar growth there is still a nagging feeling it has produced conservative estimates and the emphasis on sharing costs with grid operators is predictable."

  10. Top | #650
    Administrator lpetrich's Avatar
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    Related to the recent C40 mayors conference:

    Ekklesia | World’s scientists call on city mayors to reduce meat in public canteens
    Sixty five scientists from 11 different countries have called on mayors across the globe to reduce meat in their city’s public canteens, in order to tackle the climate emergency.

    Frontrunner cities, such as the host city of this year’s C40 World Mayors Summit, Copenhagen, show that such a shift is doable. The city recently passed a new food strategy that aims at cutting emissions by at least 25 per cent by 2025 via meat reduction and increase of plant based food.
    So we will all eat veggie burgers.

    ‘We know the recipe’ to reach an ambitious climate goal, Plante tells UN summit | Montreal Gazette
    Montreal will reduce its carbon emissions by 55 per cent by 2030 and is ready to go even farther, Mayor Valérie Plante announced Monday in a speech to the United Nations’ Summit on Climate Change.

    Cities are on the front lines of the climate crisis and their actions will have the greatest impact in reducing greenhouse gases, she said in an impassioned address to the international forum.
    UN Climate Report's Dire Warning to Coastal Cities - CityLab

    The climate crisis in 2050: what happens if cities act but nations don't? | Cities | The Guardian - "It is cities, not national governments, that are most aggressively fighting the climate crisis – and in 30 years they could look radically different"

    Then goes into detail about one possible scenario.

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