Cleantech investment reached $15 billion in the first half of 2026, driven by rising energy demand and EV adoption. This funding signals growing interest in sustainable technologies, despite remaining below 2021-2022 peaks.
Cleantech startups have seen $15 billion in funding during the first half of 2026, indicating a stabilization in investment despite a decline from previous highs in 2021 and 2022.
With electricity demand soaring and electric vehicle (EV) adoption increasing, funding for cleantech appears on track to surpass the total funding of 2025, which was noted for its low investment levels.
The second quarter of 2026 marked the highest funding level since 2024, with approximately $8 billion going to cleantech and related categories.
Despite this progress, cleantech now constitutes a smaller fraction of total venture capital compared to the ongoing AI boom.
Significant investments continue within the sector, with three of the largest recent rounds focused on fusion energy and electric vehicles.
Stegra, a Swedish green steel producer, secured the largest funding of 2026 with $1.6 billion to advance its steel plant construction.
Slate Auto, supported by Jeff Bezos, raised $650 million to develop a versatile electric pickup truck, with plans for market release later this year.
Additionally, fusion startup Helion Energy raised $465 million for a new power plant, while Inertia secured $450 million to develop advanced laser technology aimed at power generation.
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Cleantech investment reached $15 billion in the first half of 2026, driven by rising energy demand and EV adoption. This funding signals growing interest in sustainable technologies, despite remaining below 2021-2022 peaks.