Climate Change and Renewable Energy News and Discussion

tphuang

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Wind and solar have reached 23.5% of power generation through October (huge jump vs 18.2% last year) and if we count renewable as a whole, it's close to 40%

At the current pace, coal will dip below 50% in power generation sometimes next year. And imo, it's going to probably get to close to 30% by 2030.
 

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Wind and solar have reached 23.5% of power generation through October (huge jump vs 18.2% last year) and if we count renewable as a whole, it's close to 40%

At the current pace, coal will dip below 50% in power generation sometimes next year. And imo, it's going to probably get to close to 30% by 2030.

Most people cannot comprehend the scale of 332GW of newly installed wind/solar - that's roughly equivalent to building 90+ new nuclear power plants worth of capacity in 10 months.
 

Wrought

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Turns out that reforestation efforts have measurably altered the national water cycle, with slightly more water available on the Tibetan Plateau and slightly less everywhere else. File it under interesting side effects. Not sure whether this is a good or bad thing tbh.

To achieve sustainable development goals such as mitigating climate change and ensuring food security, China has undergone rapid land use/cover changes (LUCC), including afforestation, grassland restoration, and cropland redistribution, which have substantially transformed the terrestrial surface and affected hydrological conditions and water resources management. However, the hydrological impacts of these changes, particularly through atmospheric moisture recycling processes, remain insufficiently understood. This study quantified the hydrological impacts of LUCC in China from 2001 to 2020 using high-resolution data sets and an atmospheric moisture tracking model. Our findings revealed that LUCC had led to increased evapotranspiration (ET; 1.71 mm/yr) and precipitation (P; 1.24 mm/yr), while decreasing water availability (WA) (P ET; −0.46 mm/yr). Specifically, forest expansion in the Eastern Monsoon Region and grassland restoration in the Tibetan Plateau and Northwestern Arid Region were the main factors contributing to higher ET. These changes in ET, through moisture recycling, had redistributed precipitation and subsequent WA across regions, increasing WA in the Tibetan Plateau (0.38 mm/yr) while decreasing WA in the Eastern Monsoon Region (−0.59 mm/yr) and Northwestern Arid Region (−1.14 mm/yr). The Northwestern Arid Region experienced the greatest decrease in WA primarily due to significant moisture outflow to the Tibetan Plateau. The study underscores the necessity of integrating moisture recycling into water resources management to address the mismatch between land and water resources. Our results provide valuable insights for sustainable land and water resources management in China.

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Wrought

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Producing green hydrogen (plus freshwater and brine) from seawater and waste heat is an interesting concept, and cheap too. Takes the usual desalination process a step further. Hopefully they can scale it up.

China has launched a revolutionary facility in the eastern province of Shandong that produces fresh water from seawater for just two yuan (US$0.28) per cubic metre, generating
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as a by-product in a breakthrough that could redefine global water and energy systems. This small but world-first installation in the city of Rizhao is powered entirely by seawater and low-grade waste heat from nearby steel and petrochemical plants, official provincial news outlet Dazhong reported on Saturday. The facility has operated continuously for over three weeks, producing high-purity hydrogen without the need for costly desalination or precious freshwater resources, the report said.

For every 800 tonnes of seawater processed annually, the system delivers 450 cubic metres (118,877 gallons) of ultra-pure fresh water ideal for industrial cooling or residential use. It also delivers 192,000 standard cubic metres of green hydrogen and 350 tonnes of mineral-rich brine for marine chemical production – achieving a “one-in, three-out” circular economy. The hydrogen, produced at the energy cost of 4.2 kilowatts of electricity per cubic metre, is enough to power 100 buses for 3,840km (2,386 miles) every year, according to the report. The cost is remarkably low, even undercutting a seawater
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technology powered by industrial waste heat in nearby Jinan city, which costs four yuan to produce a cubic metre of fresh water, according to a local media report from August.

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tphuang

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Glenn and Dave are both my friends. But I still must ask, why are we posting this? We don’t need “schooling” posts.

Anyhow, I have a thread here on China’s green energy model strategy, especially with respect to ammonia and methanol.

 

Wrought

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Oftentimes with economists, it turns out they are using the wrong data series, or wrong context, or wrong theory. They build these wonderfully complex, mathematically rigorous, internally consistent, models of human behavior which are completely detached from empirical reality. That does not mean they are stupid; in fact, I find many of them to be quite intelligent. It just means they are mistaken. Reality is a hard thing to measure precisely, and harder still to predict exactly. Many facts are only obvious in hindsight. Making mistakes does not necessarily reflect poorly on their intelligence.

Robin Brooks is not one such economist. He's just an idiot.
 
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