After reaching nearly $2 trillion in 2025, global clean technology investment lost momentum in the first half of 2026. Investment totaled $770 billion, 17% below the same period in 2025 and roughly in line with the first half of 2024. It fell 28% from Q4 2025 to approximately $375 billion in Q1 before rising 5% to $395 billion in Q2.
Rhodium Group and MIT CEEPR’s Clean Investment Monitor (CIM) is a comprehensive database of actual investment across the world in:
Electric Power: The installation of clean electricity generation and storage.
Transport: The purchase of clean light, medium and heavy-duty electric vehicles.
Manufacturing: The construction or expansion of factories that manufacture solar, wind, EVs, batteries, and key critical mineral inputs.
Industry: New or expanded facilities to produce decarbonized industrial products, including clean iron & steel, cement and sustainable aviation fuel.
Investments are updated on a quarterly basis. To create a historical baseline against which to assess recent clean manufacturing and industry investment developments across the world, CIM includes all quarterly investments in our covered technologies since 2018. This results in a database with over 5,604 projects located at over 4,128 facilities worldwide as of Q2 2026. Greenfield facilities are included in our actual investment estimates only when it’s confirmed that they have broken ground, regardless of originally reported timelines.
Clean investments in electric power and transport—the two largest components of global clean investment—both fell in the first half of 2026 relative to the previous six months and the first half of 2025, remaining the largest share of global spending. Electric-power investment dropped 31% in Q1 from the elevated levels recorded in Q4 2025, then rose 5% in Q2. Transport investment fell 29% in Q1 from the previous quarter, then rose 8% in Q2. Clean manufacturing and industrial facilities declined for two consecutive quarters in 2026, falling 14% in Q1 and another 7% in Q2 to $28 billion.
China accounted for 88% of the global decline in clean investment in Q1 2026. Its investment fell 49% from Q4 2025 before rising 9% in Q2. As a result, China's share of global clean investment fell from 52% in Q4 2025 to 39% in Q2 2026. Investment also fell in the United States, Europe, and India in the first quarter, followed by modest gains in Q2.
Global investment in the deployment of clean electric power totaled $321 billion in H1 2026, down 16% from H2 2025. Solar and wind remained the largest technologies, representing 62% and 23% of the H1 total, respectively. Investment increased 5% in Q2 after falling 31% in Q1 from elevated Q4 2025 levels.
Electric-transport investment totaled $381 billion in H1 2026. Q1 2026 was broadly comparable to Q1 2025, but Q2 investment was 6% below the same quarter last year. Light-duty vehicles accounted for 91% of the H1 total, while investment in medium- and heavy-duty vehicles continued to grow.
Actual manufacturing investment fell 4% in Q1 2026 and another 7% in Q2 to $28 billion, continuing the decline underway since late 2023. Announced investment moved differently: it rose 10% in Q1 and held broadly steady in Q2, breaking a fourten-quarter streak of declines.
Batteries accounted for half of announced manufacturing and industry investment in H1 2026. Sustainable aviation fuel contributed most to the half-year increase in announcements, while critical-mineral announcements also rose. Solar and electric-vehicle manufacturing announcements remained below H1 2025 levels.
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