Climate Flash Report

Daily climate technology and sustainability news - Updated: 2025-09-28

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The latest climate technology and sustainability developments on September 28, 2025, highlight significant funding initiatives, startup innovations, and policy momentum across climate tech, clean energy, ESG investing, and environmental innovation.

Climate Tech Startups and Funding

•A major new $300 million fund, backed by the “All Aboard Coalition” managing $60 billion in assets, was launched to bridge the critical “valley of death” funding gap for climate-tech startups. This fund targets rounds of $100–200 million to help companies scale from pilot to commercial operations, potentially enabling gigaton-scale emissions reductions by 2030. The coalition includes prominent investors like Breakthrough Energy Ventures and Khosla Ventures, signaling strong institutional support for climate innovation[1][3][4].

•Brineworks, an Amsterdam-based climate-tech startup, raised $5.87 million in seed funding to scale its patented technology that uses saltwater electrolysis to extract CO2 and produce hydrogen. This technology aims to supply feedstocks for carbon-neutral sustainable aviation fuels and e-methanol for shipping, targeting commercial readiness by the end of 2026[5].

•U.S. climate tech funding increased by 21% in the first half of 2025 compared to the previous year, reflecting growing investor confidence despite economic and political uncertainties. The Trellis Impact 25 initiative continues to spotlight 25 promising early-stage startups across energy, carbon, transport, industry, and nature sectors, fostering innovation and investor engagement[2].

Clean Energy and Environmental Innovations

•The focus on hardware-intensive climate solutions, such as first-of-a-kind power plants and manufacturing facilities, is driving the need for large-scale capital investments. The new $300 million fund aims to catalyze these investments by leveraging a network of top-tier venture capital firms, which could accelerate deployment of clean energy technologies and infrastructure[1][3].

•Innovations like Brineworks’ electrolysis system represent advances in carbon capture and sustainable fuel production, addressing both carbon removal and clean energy feedstock supply chains[5].

ESG Investing and Climate Policy

•While specific new policy details for today are not highlighted in the search results, the involvement of government officials in events like Trellis Impact 25 (scheduled for October 28-30, 2025) indicates ongoing collaboration between startups, investors, and policymakers to support climate tech scaling and sustainability goals[2].

•The All Aboard Coalition’s approach of equity and convertible equity investments (rather than loans) reflects a strategic shift in ESG and impact investing, focusing on scalable, equity-backed climate solutions rather than project finance alone[3].

Carbon Impact Metrics

•The $300 million fund aims to enable climate tech companies to generate billions in revenue and reduce emissions by gigatons by 2030, underscoring the potential scale of impact from bridging the funding gap[1].

•Brineworks’ technology contributes to carbon removal by extracting CO2 from seawater and producing hydrogen, which can be used to create sustainable fuels, directly supporting decarbonization in aviation and shipping sectors[5].

In summary, today’s climate tech landscape is marked by a significant new $300 million fund targeting the critical growth phase of startups, increased venture capital activity, innovative carbon capture and clean fuel technologies, and active engagement between investors and policymakers to accelerate climate solutions with measurable gigaton-scale emissions reductions by 2030.

Climate Flash Report

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Climate Tech Startups and Funding

Clean Energy and Environmental Innovations

ESG Investing and Climate Policy

Carbon Impact Metrics

Clean Energy

Climate Policy

Renewable Energy

Climate Data

Sustainability

Environmental Impact

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