Climate Flash Report

Daily climate technology and sustainability news - Updated: 2025-09-19

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The latest developments in climate technology and sustainability on September 19, 2025, highlight significant funding initiatives, startup innovation, and challenges in scaling clean energy solutions.

Climate Tech Startups and Funding

•A major new fund of $300 million has been launched by the "All Aboard Coalition," a group of 14 venture capital and private equity firms managing over $60 billion in assets. This fund targets the critical "valley of death" funding gap, helping climate-tech startups move from pilot projects to commercial scale by supporting rounds of $100–200 million for manufacturing and deployment infrastructure. Key participants include Breakthrough Energy Ventures, Khosla Ventures, DCVC, and others. The fund aims to close the funding gap as many startups struggle to secure capital amid reduced federal support and private investment declines, especially for technologies like direct-air capture, which saw a 60% drop in venture funding in early 2025[1][2][4].

•Despite funding challenges, U.S. climate tech funding in the first half of 2025 was up 21% year-over-year. The annual Trellis list highlights 25 promising early-stage startups across five sectors: energy, carbon, transport, industry, and nature. These startups are recognized for their potential to drive net-zero innovations and will present at the Trellis Impact 25 event in October 2025[3].

•Leading venture capital firms actively investing in climate tech include Breakthrough Energy Ventures (backed by Bill Gates), Lowercarbon Capital, and others focusing on decarbonization technologies such as energy storage, carbon capture, and clean energy[5].

Clean Energy and Environmental Innovations

•The new funding coalition emphasizes clean energy and decarbonization technologies, aiming to scale solutions that reduce emissions and build a low-emissions global economy. The focus is on enabling companies to build manufacturing facilities and commercial systems that can have measurable carbon impact by accelerating deployment of clean technologies[1][4].

ESG Investing and Climate Policy

•The current U.S. political environment under the Trump administration has seen cutbacks in federal climate spending and grant freezes, which have narrowed funding pathways for climate tech startups. This has increased reliance on private venture capital coalitions to fill the gap. The All Aboard Coalition represents a collective private sector response to sustain momentum in climate innovation despite policy headwinds[2].

Carbon Impact Metrics

•While specific carbon impact metrics for the new fund’s portfolio are not detailed, the focus on direct-air capture and other decarbonization technologies implies a goal of significant CO2 removal and emissions reduction at scale. The fund’s support for commercial deployment is critical to translating early-stage innovations into measurable carbon impact.

In summary, the key climate tech development today is the launch of a $300 million fund by a $60 billion asset coalition to bridge the funding gap for scaling climate innovations, amid a challenging policy and investment landscape. This initiative, alongside growing startup activity and targeted venture capital investments, aims to accelerate clean energy deployment and carbon reduction technologies in 2025[1][2][3][4][5].

Climate Flash Report

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Climate Tech Startups and Funding

Clean Energy and Environmental Innovations

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Climate Tech

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