Climate Change Solutions Update

Category: Transportation

Cut emissions:
– Enhance Efficiency
– Shift to Alternatives
– Electrify Vehicles
– Switch Fuels

  • Cooling PV modules with hydrogel-coated paper

    A Vietnamese research team has developed a low-cost passive cooling system for PV modules using hydrogel-coated paper that combines water flow and interfacial evaporation to reduce operating temperatures. Outdoor tests showed temperature reductions of up to 14 C and efficiency gains of up to 16.8%, with stable operation achieved using both freshwater and natural seawater. The system was tested under real outdoor conditions and showed strong performance, with the hydrogel-coated paper maintaining effective cooling even with natural seawater. The novel passive cooling technique enables convective heat transfer through flowing water and dissipation of latent heat via interfacial evaporation, leading to significant efficiency gains for PV panels. The study involved researchers from various universities in Vietnam and aims to scale up the system for real-world use, focusing on optimizing materials for different climates, enhancing corrosion protection, and integrating energy generation with water treatment.

    https://www.pv-magazine.com/2026/04/28/cooling-pv-modules-with-hydrogel-coated-paper/

  • eManufacturing: The Next Industrial Power Shift in Hydrocarbon Production

    A new onshore production pathway is emerging, turning air and electricity into fuels and chemicals at industrial scale, with advances in electrochemistry allowing for the synthesis of hydrocarbons using CO2, water, and electricity. This eManufacturing system introduces a more secure and diversified supply model, enabling countries without fossil resources to become hydrocarbon producers. The shift towards eManufacturing is seen as a way to produce essential molecules like E-NaphthaTM and sustainable aviation fuel without reliance on fossil extraction, driving the next generation of fuel and chemical manufacturers. Leaders are urged to consider the implications of this shift, including control of supply, resilient supply chains, new industrial advantage, and capital reallocation towards systems that convert electrons into molecules, defining the future of industrial growth and aligning production with the electrification of the global economy.

    https://www.twelve.co/post/emanufacturing-the-next-industrial-power-shift-in-hydrocarbon-production

  • How to electrify greenhouses with semi-transparent PV, heat pumps

    Researchers in Canada found that 69%-transparent crystalline silicon semitransparent PV modules can improve tomato greenhouse yields by up to 38% while maintaining healthy plant growth through beneficial partial shading. Combining rooftop agrivoltaics with heat pumps can fully eliminate fossil fuel heating. Various bifacial STPV technologies were tested in greenhouse conditions for tomato production, with differences in light intensity and spectrum affecting plant growth. The study, published in Energy and Buildings, evaluated agrivoltaic greenhouse systems through five main stages and used software tools to simulate and analyze different greenhouse scenarios. Experimental investigations showed that the selected 69% transparent PV system with a heat pump enabled full electrification of an agrivoltaic greenhouse, covering approximately 13% of the total annual electricity demand. This combination of agrivoltaic fields and partially-powered agrivoltaic greenhouses was seen as a synergistic strategy for sustainable and economically viable production, with the potential to reduce greenhouse carbon emissions and improve crop yields.

    https://www.pv-magazine.com/2026/04/28/how-to-electrify-greenhouses-with-semi-transparent-pv-heat-pumps/

  • California’s water crisis could turn farmland into massive solar field

    The Westlands Water District in California's San Joaquin Valley is planning to repurpose water-starved farmland into a massive solar-and-battery network through the Valley Clean Infrastructure Plan, aiming to add 21 gigawatts of solar and battery capacity across 136,000 acres. This project, the largest of its kind globally, will help address the water crisis, lower energy costs for farmers, and comply with new state groundwater limits. By selling solar power through the California grid, the district hopes to reduce energy costs for farmers and keep farming viable, while also providing clean electricity to the state. This innovative solution not only helps farmers adapt to changing climate conditions but also mitigates the impacts of climate change on agriculture in the region.

    https://www.usatoday.com/story/money/california/2026/04/27/westlands-solar-plan-fallowed-farmland-san-joaquin-valley/89780561007/

  • Swapping Out Diesel For Solar & Batteries In The Amazon Rainforest

    Affordability is driving the increase in new renewable energy installations at both grid and individual levels, with solar and wind, along with battery storage, becoming more popular due to decreasing costs. In areas like Africa, Pakistan, and the Amazon rainforest, the transition to solar energy is robust, supported by federal policy, falling technology costs, and philanthropic initiatives. Brazil has successfully increased its wind and solar power capacity to meet and exceed electricity demand growth, reducing the need for fossil fuel generation and lowering power sector emissions. The growth of renewables in Brazil has been significant, with the decline in hydro generation leading to a shift towards wind and solar power, reducing reliance on fossil fuels and presenting opportunities to avoid costly imports. Renewable energy sources like solar and wind can provide a more sustainable and cost-effective solution, especially in rural areas where diesel generators are currently used.

    https://cleantechnica.com/2026/04/27/swapping-out-diesel-for-solar-batteries-in-the-amazon-rainforest/

  • Electric Garbage Trucks Are The Heavy-Duty EV Story Hiding In Plain Sight

    The transition to electric garbage trucks is gaining momentum, with early fleets becoming contract-scale deployments for some operators. China is leading in sanitation-vehicle volumes compared to Western countries. While electric garbage trucks won't solve all municipal fleet emissions, they are a clear solution for heavy-duty electrification. Municipalities should skip the demonstration phase and move directly to early fleets, as battery electric heavy compactor garbage trucks are proven technology. The transition will happen gradually, one depot, one route, and one replacement cycle at a time, ultimately reducing noise and emissions in communities.

    https://cleantechnica.com/2026/04/25/electric-garbage-trucks-are-the-heavy-duty-ev-story-hiding-in-plain-sight/

  • Republicans Cry Uncle On The “Beautiful” Tax Incentive Fadeout

    Some Republicans in Congress are pushing for the "American Energy Dominance Act" to revive key incentives for commercial energy efficiency upgrades and new energy-efficient homes, aiming to address energy issues and appeal to voters. NABTU supports the bill, which includes provisions for energy efficiency tax credits and clean hydrogen incentives to support job creation and strengthen domestic energy supply. The Regional Clean Hydrogen Hubs program, focusing on green hydrogen production, aims to expand the domestic hydrogen supply chain. Water electrolysis technology advancements are expected in the next seven years, with Republican members proposing tax incentives for energy efficiency and clean energy to support these efforts.

    https://cleantechnica.com/2026/04/25/do-over-republicans-cry-uncle-on-federal-tax-incentives/

  • New panel of climate scientists calls for fossil fuel transition roadmaps

    A new panel of experts, including top climate scientists, is urging governments to develop science-based and just roadmaps for phasing out fossil fuels. The panel's recommendations were presented in Santa Marta, Colombia, ahead of a ministerial meeting on transitioning away from coal, oil, and gas. The panel emphasizes the need for whole-of-government plans to overcome barriers to the energy transition. A draft roadmap for Colombia, developed with input from European scientists, shows a pathway to economic and societal benefits through phasing out fossil fuels with energy efficiency measures and renewable energy. Developing countries need an exit route from the "debt trap" of fossil fuels to enable a just and effective transition. Brazil is working on a national roadmap for its economy and leading a global roadmap for climate solutions, with the new panel aiming to provide more specific and targeted advice at a faster pace than the IPCC. The transition beyond fossil fuels depends on cities and collective action, with recommendations including banning new fossil fuel infrastructure and implementing carbon levies on imports. The panel will be co-chaired by experts from Cameroon, Germany, and Brazil, and will consist of scientists working on transition pathways, technological solutions, policies, and finance.

    https://www.climatechangenews.com/2026/04/25/new-panel-of-top-climate-scientists-calls-for-fossil-fuel-transition-roadmaps/

  • Renewables rising, Part 1: How four countries are reshaping energy security

    The disruption of oil and gas supplies in the Strait of Hormuz highlights the vulnerability of the global energy system tied to fossil fuels. UN Secretary-General emphasizes the importance of transitioning to renewables for energy security and economic resilience. Countries like Norway, Paraguay, Nepal, and Ethiopia are leading the way in renewable energy adoption, with a focus on hydropower and a gradual shift away from fossil fuels in various sectors. Renewables offer stable, domestic, and cheaper power, while also cutting emissions, reducing pollution, creating jobs, and lowering long-term costs. Nepal and Ethiopia are reducing their dependence on imported fossil fuels by focusing on hydropower, expanding rural electrification, and developing decentralized renewable systems to achieve universal electricity access and support economic development. Challenges in financing and infrastructure remain, but the transition to renewables is seen as unstoppable and beneficial for the future.

    https://news.un.org/en/story/2026/04/1167366

  • Why the transition beyond fossil fuels depends on cities and collective action

    The world must transition away from fossil fuels, but this requires structural transformation of economies and governance, not just technological substitution. Fossil fuels are deeply embedded in economic systems, leading to financial and institutional incentives that favor short-term extraction. Cities play a crucial role in accelerating the transition by reshaping demand, accelerating innovation, and demonstrating that a different model is possible. Transitioning away from fossil fuels not only lowers costs and improves public health, but also rebuilds trust in public institutions. Cities like Melbourne, Curitiba, Johannesburg, and Bogotá are taking significant steps towards reducing fossil fuel use and increasing renewable energy capacity, part of a global effort to halve fossil fuel use in C40 cities by 2030. The First Conference on Transitioning Away from Fossil Fuels in Santa Marta aims to bring together various stakeholders, including cities, to identify concrete pathways for a just and equitable transition, focusing on transforming energy supply and demand, overcoming economic dependence, and strengthening international cooperation to redefine development in a sustainable way. The message from Santa Marta is that the end of the fossil fuel era is already underway, and the focus now should be on ensuring a just, coordinated, and irreversible transition.

    https://www.climatechangenews.com/2026/04/24/why-the-transition-beyond-fossil-fuels-depends-on-cities-and-collective-action/