The International Energy Agency (IEA) recommends accelerating the adoption of renewable energy to lower household power prices, as it has been proven to be more cost-effective in the long run despite higher upfront costs. The IEA also dispels the myth that wind and solar energy sources are less reliable than fossil fuels, emphasizing that reduced dependence on fossil fuels can shield against market price shocks. South Australia and Western Australia serve as examples of grids remaining stable with a high percentage of renewable energy. Climate Analytics CEO Bill Hare underscores the benefits of supporting renewables, noting their rapid growth and falling prices as a win-win for both people's wallets and the climate. The IEA's report stresses the need for significant investments in grid infrastructure to facilitate the transition to renewable energy sources, as efforts to stabilize energy prices are faltering and demand for LNG and oil is declining while renewables become more competitive.
Category: Buildings
Cut Emissions:
– Shift Energy Sources
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US startup launches DC-powered solar water heater
Apparent Inc. has introduced a DC-powered solar water heater that can eliminate 100% of a home's water heating costs. This innovative system utilizes low-voltage DC electricity from solar panels and a cloud-based platform for efficient energy management. It is designed to operate off-grid with standard photovoltaic panels and features a patented alloy heating element for optimal heat transfer. With an AI-driven control platform for performance optimization and energy resource management, the water heater is grid-independent, blackout-resistant, and boasts a lifespan of 10 to 15 years.
https://www.pv-magazine.com/2025/11/12/us-startup-launches-dc-powered-solar-water-heater/
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UN Secretary-General’s remarks at the Belém Climate Summit’s energy transition roundtable
UN Secretary-General António Guterres emphasized the need for a rapid transition to renewable energy at the Belém Climate Summit, highlighting the growth of renewables in the global energy landscape and the importance of investing in clean energy. He stressed the urgency of meeting the goals set at COP28 to triple renewable energy capacity and double energy efficiency by 2030, calling for aligning laws and policies with a just energy transition, supporting workers in fossil fuel industries, investing in infrastructure, and providing finance for developing countries to accelerate the shift to renewables. The section emphasizes the need to move quickly and collectively towards clean, inclusive, and resilient economies, driving the acceleration of climate solutions with fairness and turning climate challenges into development opportunities worldwide. The message highlights the end of the fossil fuel era and the rise of clean energy, urging for a fair, fast, and final transition.
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Australia’s SolarCloud opens rooftop solar access to renters, flats
Australian startup SolarCloud has introduced a virtual rooftop solar ownership model that allows renters and apartment residents to buy shares in existing commercial systems without installation or approvals. Customers can purchase one or more panels starting at AUD 139 each and monitor generation 24/7 via an online platform. The company aims to make solar energy more accessible to households previously excluded from the solar transition. SolarCloud CEO John Kennedy highlighted that this model provides a way for everyone to access cheaper, cleaner energy without needing a suitable roof.
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Statement from the Global Climate and Health Alliance Regarding Bill Gates Commentary and Responses to It
Dr. Jeni Miller emphasizes the importance of urgent emissions reduction and transitioning away from fossil fuels to protect human health, especially in developing countries facing growing climate impacts. The recent Hurricane Melissa in the Caribbean underscores the need for rapid cuts in emissions due to human-induced warming. Health professionals, including the Global Climate and Health Alliance, are advocating for resilient health systems and clean energy investments at COP30 to prioritize the health and survival of people worldwide. Visit https://climateandhealthalliance.org/who-we-are/about/ for more information on the alliance's efforts to address climate change and minimize its health impacts while maximizing mitigation benefits for a sustainable future.
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World Mayors Summit Day 2
At the 2025 World Mayors Summit, C40 Cities announced three new accelerators to address climate-related issues in cities. The Cool Cities Accelerator aims to help cities prepare for extreme heat and protect residents from its deadly effects, while the Thriving Food Systems Accelerator focuses on transforming food systems for all residents. The Urban Planning Accelerator aims to drive bold climate action by placing people, planet, and prosperity at the center of urban development. These initiatives aim to create cooler, safer, fairer cities, tackle hunger, improve livelihoods, and cut greenhouse gas emissions by up to 25% by 2050. City leaders are also collaborating to decarbonize freight transport, reduce methane emissions, and accelerate climate progress through initiatives like CHAMP and the Global Mutirão, emphasizing the importance of cities in shaping the global climate agenda.
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Putting people at the heart of cities, key to improving urban life
Bogotá, Colombia is at the forefront of smart city initiatives, focusing on creating fairer, greener, and more inclusive urban spaces through digital transformation, mobility, and sustainability efforts. The city's approach prioritizes people-centered solutions like the TransMilenio bus system and Ciclovía car-free community spaces, showcasing how technology can enhance quality of life and strengthen community bonds. Keynote speaker Carlo Ratti advocates for cities to evolve into "senseable cities" that prioritize people over technology and prioritize reuse, retrofitting, and transformation in the face of the climate emergency. Bogotá's efforts align with a global conversation on sustainable and inclusive urbanization, emphasizing collaboration, learning, and a shared commitment to a more equitable urban future.
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Building healthy, thriving cities: A conversation between C40 and Novo Nordisk
Novo Nordisk and C40 Cities are partnering to create healthier, more sustainable cities by focusing on prevention, community engagement, and addressing everyday factors that impact health. The Green and Thriving Neighbourhoods programme, supported by Novo Nordisk and C40, aims to create low-carbon, people-centred neighbourhoods with access to healthy food, green spaces, and safe transport. Community-led projects in Buenos Aires, Nairobi, and Rio de Janeiro are transforming urban spaces through initiatives like expanding markets for healthy food and creating communities where daily needs are within walking or biking distance. By involving residents in the design process, cities can promote health, equity, and sustainability while reducing emissions and creating environments that benefit all residents. City leaders are taking bold steps to shape healthy and sustainable living environments for urban residents, demonstrating the effectiveness of local action in influencing broader change nationally and globally.
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Cambridge scientists discover photovoltaic properties in organic radical semiconductor
Researchers at the University of Cambridge have discovered photovoltaic properties in an organic semiconductor molecule called P3TTM, which has an "open-shell" character due to unpaired electrons, allowing for efficient photon-to-charge conversion in solar cells. The new material enables the fabrication of solar cells from a single, low-cost, lightweight material, potentially increasing overall efficiency. The findings were published in the study "Intrinsic intermolecular photoinduced charge separation in organic radical semiconductors" in Nature Materials, highlighting a promising advancement in solar cell technology for climate solutions experts.