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الوسم: clean energy

  • Why Electric Trucks Could Soon Surpass Diesel in Urban Areas

    Why Electric Trucks Could Soon Surpass Diesel in Urban Areas

    Electric trucks may be closer to becoming the standard than many realize.

    A recent report by C40 Cities, the University of Exeter, and Arup highlights that urban areas worldwide have the potential to accelerate the transition from diesel-powered trucks to cleaner electric alternatives. Taking decisive action now could lead to significant reductions in pollution, better air quality, and decreased reliance on oil.

    Though heavy-duty trucks account for less than 10% of the global commercial vehicle fleet, they are responsible for roughly 25% of transport-related CO₂ emissions. As international trade expands, freight movement is projected to double by 2050, making cleaner trucking solutions a crucial component in addressing climate change.

    While electric passenger cars have become increasingly common in recent years, electric trucks have lagged behind. In 2025, roughly 25% of new passenger vehicles sold worldwide were electric, whereas only about 8% of new trucks were. The slower adoption of electric trucks stems from factors like larger batteries, longer charging times, limited charging infrastructure, and the need for robust electrical grids capable of supporting heavy vehicles.

    Despite these hurdles, the report suggests the electric truck market is nearing a “tipping point,” where incremental advances could trigger rapid growth in adoption. China is already leading this shift, accounting for approximately 80% of global electric truck sales. In cities such as Beijing, the total cost of owning an electric truck is now comparable to that of a diesel truck. Projections indicate that within the next ten years, Beijing could have more electric trucks than diesel ones.

    The study looked at six countries and found that proactive efforts from city governments could help electric trucks reach cost competitiveness more than a year ahead of schedule. Larger trucks stand to benefit most, as their operational costs are currently much higher.

    However, making electric trucks affordable is just part of the solution. Fleet operators also need accessible charging stations and vehicles tailored to daily operational needs. Without reliable infrastructure and practical support, lower costs alone might not persuade businesses to make the switch.

    Cities can facilitate this transition by establishing low-emission zones, deploying fast-charging hubs, developing dedicated electric freight routes, and simplifying access to roads and charging stations for electric trucks. Such policies often prove more effective than financial incentives like subsidies or carbon taxes, especially in regions where electric trucks are still a rarity.

    The report also highlights a significant economic advantage: if diesel prices increase sharply due to global events, electric trucks could become cost-competitive sooner. A long-term increase of 30% in diesel costs might bring electric trucks to price parity five to seven years earlier. Transitioning to electric freight globally could cut oil demand by nearly five million barrels daily by 2030—roughly matching India’s daily oil consumption.

    Ultimately, the authors emphasize that cities play a critical role in this shift. By collaborating with national governments and industry stakeholders, urban centers can help develop cleaner freight systems, enhance energy security, lower greenhouse gas emissions, and improve air quality for millions of residents.

  • Scientists develop nearly invisible solar cells to turn windows into power sources

    Scientists develop nearly invisible solar cells to turn windows into power sources

    Scientists in Singapore have introduced a groundbreaking ultrathin solar cell that is nearly invisible and could someday turn windows, car sunroofs, and smart glasses into sources of renewable energy. Developed by researchers at Nanyang Technological University and published in ACS Energy Letters, this innovative technology uses a material called perovskite to create solar cells that are approximately 10 nanometers thick—about 10,000 times thinner than a human hair and roughly 50 times thinner than standard perovskite solar panels.

    Despite their ultra-thin profile, these solar cells exhibit impressive efficiency in converting sunlight into electricity. The researchers suggest that this advance could seamlessly integrate solar power into building designs and electronic devices without significantly altering their appearance. One of the most notable features of these cells is their semi-transparent, nearly colorless nature, which allows them to be embedded directly into windows and glass facades while still letting daylight pass through.

    Given that buildings are responsible for a large percentage of global energy consumption, the new solar cells could turn windows and exterior glass surfaces into valuable sources of clean energy in densely populated urban areas with limited rooftop space. Unlike conventional silicon solar panels, these perovskite cells can generate electricity even under diffuse sunlight and cloudy conditions, making them especially suitable for cities like Singapore where many building surfaces do not receive direct sunlight.

    The research team estimates that if produced at scale, large office buildings could harvest significant amounts of energy through their windows and external glass. In some scenarios, the amount generated could match the annual energy needs of around 100 four-room public housing apartments. The solar cells are manufactured using a vacuum-based process called thermal evaporation, where materials are heated to vapor inside a vacuum chamber, then deposited onto surfaces as a uniform, ultra-thin film. This method eliminates the need for toxic liquids and minimizes defects, allowing for precise control over the cells’ transparency.

    The team has successfully produced perovskite layers as thin as 10 nanometers, with one semi-transparent prototype allowing approximately 41% of visible light to pass through while still functioning efficiently. Researchers believe this technology has the potential to be integrated into windows, skyscraper glass, vehicles, wearable electronics, and other surfaces where energy generation has not traditionally been feasible.

    Currently, the scientists are collaborating with industry partners to enhance the durability and stability of these solar cells before bringing commercial products to market. They see this invention as a way to enable future cities to produce more clean energy without expanding land use or relying solely on large rooftop solar arrays.

  • Concerns Rise in India and Bangladesh Over China’s Mega-Dam Project

    Concerns Rise in India and Bangladesh Over China’s Mega-Dam Project

    The Baihetan hydropower facility in operation along the border of Qiaojia County in Yunnan province and Ningnan County in Sichuan province, China as of June 28, 2021. — Reuters

    China has launched what it claims will be the largest hydropower project in the world, a staggering $170 billion initiative that has the potential to generate enough electricity annually to power the entire United Kingdom.

    This new endeavor overshadows the currently largest project, the Three Gorges Dam, leading to a surge in Chinese construction and engineering stocks following the announcement by Premier Li Qiang over the weekend.

    Beijing sees this project as a source of clean energy, job creation, and an economic boost amid a slow recovery. However, it raises concerns among downstream neighbors about water security since the Yarlung Zangbo River transforms into the Brahmaputra as it flows through India and Bangladesh, serving as a crucial resource for millions.

    What did China formally approve?

    The ambitious plan consists of five dams spanning a 31-mile stretch where the river descends nearly 6,600 feet from the Tibetan Plateau. The first electricity generation is expected in the early to mid-2030s. However, details about the construction process and further specifics about costs remain limited.

    Why are neighboring countries worried?

    The scarcity of information has heightened fears in India and Bangladesh regarding water availability, as both countries rely on the Brahmaputra for irrigation, energy generation, and drinking water.

    The chief minister of Arunachal Pradesh, an Indian state bordering China, expressed concerns earlier this year that the dam could reduce water flow by up to 80% in the region while also risking flooding in areas downstream, such as Assam.

    Moreover, the dam’s construction will likely reduce sediment reaching downstream areas, an important component for maintaining agricultural productivity, according to Michael Steckler, a professor at Columbia University.

    Historical tensions exist in this region, with India and China having fought a border war in the 1960s. The uncertainty surrounding the project has added fuel to speculation that China might exploit the dam to restrict water flow in the event of another conflict, says Sayanangshu Modak, a specialist in India-China water dynamics at the University of Arizona.

    China’s foreign ministry responded by affirming that the Yarlung Zangbo hydropower project falls under its sovereign affairs, claiming it would not only produce clean energy but also aid in flood management.

    Additionally, the ministry asserted that China has engaged in necessary discussions with downstream nations regarding hydrological data, flood control, and disaster mitigation strategies related to the Yarlung Zangbo project.

    Requests for comments from India’s foreign and water ministries went unanswered.

    Will it restrict water access for India?

    Concerns about the dam’s impact on downstream water flow may be exaggerated, as the majority of the Brahmaputra’s water comes from monsoon rains generated south of the Himalayas rather than from China, according to Modak.

    He further noted that the Chinese project is designed as a “run of the river” hydropower scheme, meaning that water will be allowed to flow naturally along the river’s conventional path.

    India is also proposing two dams on the Siang River, which is the local name for the Yarlung Zangbo. One of these, an 11.5-gigawatt project in Arunachal Pradesh, is set to be India’s largest if constructed.

    These proposals are partly intended to assert India’s claims to the river and strengthen its position should China ever attempt to divert the water, Modak added.

    “If India can demonstrate it has been utilizing the waters, China cannot unilaterally redirect them,” he explained.

    Controversy is nothing new

    Disputes over dams and water security are perennial issues. For instance, Pakistan has accused India of weaponizing shared water resources in Jammu and Kashmir after New Delhi suspended its engagement in the Indus Waters Treaty, which governs water sharing between the two countries.

    In Egypt, a high-ranking politician was caught on camera suggesting the bombing of a contentious dam on the Nile River amid an ongoing dispute over the project led by Ethiopia.

    Risks from earthquakes and extreme weather

    The dam will be situated in a seismically active region known for landslides, glacial lake floods, and severe storms. Experts have expressed safety concerns in light of a recent destructive earthquake in Tibet.

    Additionally, a smaller hydropower facility on a nearby tributary has faced limitations in construction due to engineering challenges posed by the high-altitude and extreme winter conditions.

  • Global Clean Energy Reaches 40%, Emissions Still Climbing

    Global Clean Energy Reaches 40%, Emissions Still Climbing

    Solar panels and a wind turbine in an undated image.— Reuters/File

    New information from the climate think tank Ember reveals that in 2024, clean energy sources contributed over 40% of the world’s electricity. This is the highest percentage we’ve seen since the 1940s, according to a report from the BBC.

    However, this surge in renewable energy coincided with a record high in global carbon dioxide (CO2) emissions, which reached 14.6 billion tonnes.

    This increase in emissions is largely attributed to a 4% rise in global electricity demand last year, driven by particularly hot weather during heatwaves.

    “Solar energy has emerged as the driving force behind the global energy transition,” said Phil Macdonald, managing director of Ember. He added, “While the increase in fossil fuel generation in 2024 was influenced by higher temperatures, we are unlikely to see a similar rise in 2025.”

    Notably, solar energy has been the fastest-growing electricity source for 20 consecutive years, with production doubling every three years since 2012. China has played a pivotal role in this expansion, accounting for over half of the global growth, while India has also seen its solar capacity double year over year.

    Despite this rapid growth, solar power still represents less than 7% of global electricity—enough to power the entire nation of India. Wind power contributes just over 8%, while hydropower remains the largest clean energy source at 14%. Nuclear energy accounts for about 9%.

    Nevertheless, the growth of renewable energy sources continues to fall short of meeting the increasing energy demand, especially in rapidly developing countries like India and China. Consequently, the use of fossil fuels has also increased, with coal and gas making up 34% and 22% of global electricity generation, respectively—resulting in a 1.4% overall rise in fossil fuel consumption.

    The European Copernicus climate service has reported that March 2025 was the second warmest March on record, continuing a trend of unseasonably high temperatures.

    Ember has previously projected that CO2 emissions would soon peak, but we have not yet reached that point. This report highlights the ongoing challenge of transitioning to clean energy at a pace that can keep up with the rising global electricity demand.

  • Clean Energy Powers 10% of China’s GDP in 2024

    Clean Energy Powers 10% of China’s GDP in 2024

    The Rise of Clean Energy in China’s Economy

    An Overview of Clean Energy Contribution

    In recent years, China has emerged as a global leader in clean energy technologies. The contribution of these technologies to the nation’s economy in 2024 surpassed a significant milestone, accounting for more than 10% of the gross domestic product (GDP). According to a comprehensive analysis by Carbon Brief and CREA, this translates to a staggering $1.9 trillion (approximately 13.6 trillion yuan) dedicated to green sales and investments. As clean energy continues to grow, its influence on China’s economic landscape becomes increasingly apparent.

    Clean Energy versus Traditional Sectors

    The clean energy sectors have now outstripped traditional sectors such as real estate and agriculture, which were once cornerstones of the Chinese economy. Specifically, real estate sales contributed about 9.6 trillion yuan while agriculture was around 9.1 trillion yuan in 2024. This shift signifies a broader transition towards sustainability, showcasing how innovation in energy technologies is reshaping China’s economic priorities.

    Key Drivers Behind Clean Energy Growth

    Electric Vehicles and Batteries

    Among the various clean energy sectors, electric vehicles (EVs) and batteries stand out as the largest contributors. In 2024, they accounted for an impressive $736 billion, reflecting a 20% increase in production from the previous year. This growth can be attributed to the rising demand for sustainable transportation solutions and advancements in battery technology.

    Wind and Solar Power Industries

    Following the electric vehicles sector, the wind and solar power industries play a pivotal role in driving China’s clean energy agenda. Combined, these sectors raked in $508 billion in 2024. The investment in wind and solar infrastructure not only helps reduce carbon emissions but also aligns with China’s commitment to international climate agreements.

    Rail Transportation as a Clean Energy Alternative

    Another significant contributor to the clean energy economy is rail transportation. Generating approximately $256 billion in 2024, this sector demonstrates the importance of developing efficient public transport systems powered by renewable energy sources. Rail infrastructure plays a crucial role in reducing dependence on fossil fuels, improving air quality, and enhancing urban mobility.

    An Analysis of the Clean Energy Landscape

    A Comprehensive Definition of Clean Energy Sectors

    For the purposes of this analysis, "clean energy" encompasses a broad range of sectors, including:

    • Renewable Energy: Solar, wind, and hydropower generation.
    • Nuclear Power: A critical component of energy diversification.
    • Electricity Grids: Technologies that facilitate the efficient distribution of power.
    • Energy Storage: Innovations aimed at storing renewable energy for later use.
    • Energy Efficiency: Strategies and technologies designed to reduce energy consumption.
    • Electric Vehicles: The transportation sector’s shift towards zero-emission vehicles.
    • Railways: Sustainable transport solutions that reduce carbon footprints.

    The Economic Implications of Clean Energy

    The integration of clean energy into China’s economic framework represents a strategic move towards sustainability. As these sectors grow, they not only contribute significantly to GDP but also create jobs, enhance energy security, and foster technological innovations.

    The Future of Clean Energy in China

    China’s commitment to clean energy development continues to evolve, with policies aimed at reducing carbon emissions and promoting sustainable practices. The rapid growth of clean energy technologies signals a transformative shift in how China approaches its economic and environmental challenges, marking a pivotal moment in the global energy transition.

    As the clean energy sector expands, it will undoubtedly influence various facets of China’s economy and serve as a model for other nations aiming to achieve similar sustainability goals. By investing in renewable energy and innovative technologies, China is paving the way for a greener, more resilient economy.