Renewable Energy

Renewable energy discussion

Q&A Renewable Energy

Renewables can supply 100% power, with several countries already achieving high percentages. They are cheaper than fossil fuels, despite rising energy bills due to external factors. While land use is less for renewables, the environmental impact of fossil fuels is significant. Job transitions from fossil fuels to renewables are underway, with potential growth in sectors like battery technology. Renewables offer economic, environmental, and job benefits over fossil fuels.

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wind prices falling

Wind Prices Falling

Wind turbine prices have increased recently due to factors like supply chain issues and inflation. However, technological advancements and economies of scale have led to more efficient and larger turbines, reducing the cost of energy production per MWh. While costs vary by country, China has seen significant reductions in wind turbine installation costs. Overall, the trend is towards more affordable wind energy, despite recent price fluctuations.

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coal to build wind turbines provides a 50 times return

Coal to Build Wind Turbines

While over 260t steel, 300t iron ore, 170t coking coal are used to build a 4MW wind turbine, the energy from a wind turbine is 660 times more. The wind turbine produces 420GWh electricity over its 30-year life, while the equivalent amount of coal electricity would require 290,988t of coal. Therefore, wind energy is a much cleaner and more sustainable option.

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gas transition to electric for australia

Gas Transition to Electric In Australia

As Australia transitions from fossil fuels to electricity by 2030, rapid shifts will mainly impact domestic gas consumption. New gas fields, key to government policy, are controversial due to their potential to hinder emissions reductions. The shift includes household electrification, increased renewable energy storage, and industrial process heat alternatives. Export markets face competition risks.

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153 Countries 100% Renewable Energy

153 Countries 100% Renewable Energy

A decade after Prof. Mark Jacobson’s 2015 proposal for 100% renewable energy in 153 countries, significant debates continue. Despite initial challenges and legal disputes, Jacobson defended his model, though some technological predictions, like concentrated solar power, fell short. Notably, California’s renewable energy achievements in 2024 affirm the feasibility and importance of his vision.

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advances in thorium nuclear reactor

Advances in Thorium Nuclear Reactors

India and China have made considerable progress in developing thorium-based nuclear reactors, recognizing their potential as safer, more sustainable alternatives to uranium reactors. India’s program focuses on the Advanced Heavy Water Reactor using thorium and a small amount of uranium-233, while China’s involves pioneering molten salt technology in the Chinese Thorium Molten Salt Reactor project. Alongside, companies like Copenhagen Atomic are also advancing thorium technology, facing challenges like isotope production and corrosion-resistant materials.

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Electricity for AI exceeds transporation

Electricity for AI Exceeds Transportation

AI computing’s surge outpaces electricity demand for transportation, potentially exceeding it due to expansive training and inference needs. Massive datacenters from tech giants necessitate immense power, raising speculation about electricity shortages. Tesla leads with significant investments in low-power and high-performance chips, aiming for exascale AI capabilities. This growth in AI computation could increase datacenter electricity use fourfold within a decade, challenging current power grids and possibly requiring dedicated power plants to meet escalating energy demands.

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china emissions drop to 45% by 2030

Chinese Coal Drops from 70 to 45 Percent by 2030

Lauri Myllyvirta forecasts China’s coal dependency to drop from 70% to 45% by 2030, influenced by renewable expansions and energy policy shifts reported in April 2024. Despite local-global energy strategy conflicts and bureaucratic hurdles, China’s renewable energy sector is flourishing with vast solar and wind installations, and plummeting solar, battery prices. China’s energy security challenge is compounded by coal quality issues and reliance on imports.

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