The biggest constraint facing AI data centre expansion is storage and the unique way they use power, leading to unpredictability in drawing electricity from the grid. Traditional generation sources like coal and nuclear may still be necessary due to the volatile energy demand of AI data centres. Data centres require buffering capacity to reconcile intermittent supply with intermittent demand, with lithium-ion batteries degrading rapidly under constant cycling. Flow batteries offer a solution by allowing energy and power capacity to scale independently, enabling relentless cycling without degradation typical of lithium-ion systems. The world's renewable build-out is accelerating, but most large-scale batteries remain short-duration systems, highlighting the need for innovative storage solutions for AI-driven data centres. Investing in storage technologies designed for high-cycle operation can help harness renewable energy and prevent the reliance on fossil fuel backup, ultimately allowing AI data centers to contribute to a clean energy future.
Author: Cleantechnica
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18 EV Fast Chargers Running On 100% Renewable Electricity Installed In Germany
Eighteen new EV fast chargers capable of charging up to 400 kW have been installed in Germany, running on 100% renewable electricity, providing a clean energy source for fully electric vehicles. Diesel emissions, linked to premature deaths in Europe, highlight the importance of transitioning to electric vehicles for cleaner air. EVs can also be integrated into virtual power plants and charged with home solar power, offering sustainable transportation solutions. For more information, listeners can contact the podcast or sign up for CleanTechnica's newsletters featuring cleantech stories and updates on sustainable solutions.
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$3.2 Million Awarded For Tribal Solar Projects
Tribal Energy Alternatives has been awarded $3.2 million in grant funding to support solar energy access, workforce development, and energy resilience for Tribal Nations. The installations, which involve tribal contractors and trainees, aim to achieve energy independence and self-sufficiency through clean energy solutions, potentially saving $3,300 annually on utility bills. Additionally, over 500 tribal members have been supported in clean energy careers through training programs. This initiative highlights the importance of renewable energy sources in promoting sustainability and economic growth within Tribal Nations.
https://cleantechnica.com/2026/05/02/3-2-million-awarded-for-tribal-solar-projects/
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Maritime Decarbonization Is Closer, Cheaper, And More Practical Than It Looks
The International Maritime Organization's Net-Zero Framework is still pending formal adoption after MEPC 84, with the next decisive window at MEPC 85 in November-December 2026. The framework focuses on absolute emissions reductions and lifecycle accounting, with a global fuel standard and greenhouse gas pricing mechanism to incentivize lower emissions. The shift towards low-carbon alternatives like biomass, biofuels, and batteries is highlighted, emphasizing the importance of adapting to new solutions for decarbonization. The article also addresses the challenges and costs of alternative fuels, the impact of fuel costs on shipping, and the need for realistic and sustainable solutions to reduce emissions in the shipping sector. The clock is ticking for the industry to transition to cleaner technologies, as the path is clear, the economics are manageable, and excuses are running out.
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In Colombia, 57 Nations Chart A Path To A Future Without Fossil Fuels
The recent climate talks in Colombia brought together nearly sixty nations to develop national "road maps" to end the production and use of fossil fuels, marking a departure from the annual UN climate negotiations. The event focused on practical steps to transition away from fossil fuels, with positive feedback from attendees. The head of the International Energy Agency noted that the war in Iran has irreparably damaged fossil fuel markets, leading countries towards renewable energy sources. France announced plans to phase out fossil fuels, and a "coalition of the willing" countries aims to accelerate the retreat from fossil fuels. The impact of the conference may depend on government implementation of policies and the participation of more countries in future efforts.
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We Need To Speak Out Against Policies That Are Exacerbating Climate Change
The importance of stabilizing rising global temperatures, finding alternatives to energy-intensive nitrogen fertilizers, and protecting mangrove ecosystems are crucial climate solutions highlighted in the article. It emphasizes the need for low-carbon production routes, empowering small holder farmers, and nature-based investments to address climate disruption and protect the economy. Additionally, the impact of climate change on marine ecosystems, such as Southern Right Whales, underscores the urgency for climate solutions that match the scale of the crisis. Inaction is not a neutral option in the face of these climate-related challenges.
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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.
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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.
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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/
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US Gulf States See A Green Hydrogen Future For Stranded Assets
Three US states around the Gulf of Mexico, including Texas, Louisiana, and Mississippi, are collaborating on repurposing offshore oil and gas platforms for green hydrogen and aquaculture projects. The initiative, supported by former Louisiana Governor Jon Bel Edwards, aims to transform the oil and gas industry into a more sustainable and prosperous sector by integrating renewable energy, aquaculture, mineral recovery, and ocean monitoring. A $20 million project funded by the Gulf Research Program, involving the University of Houston, is working towards repurposing inactive wells, pipelines, and platforms in the Gulf for economic and environmental benefits, with a goal of having five operational platforms by 2030. The project is part of a larger effort to address the importance of locally produced renewable energy and the narrowing cost gap between green hydrogen and conventional hydrogen, with defense suppliers like Rheinmetall planning to build green hydrogen facilities across Europe. CleanTechnica provides detailed analyses and summaries on clean tech news, highlighting the potential for repurposing offshore oil and gas infrastructure for green hydrogen production.