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Clean Energy VC Trends Summary

Core Content

This report provides an overview of venture capital (VC) trends in the clean energy sector as of June 30, 2025. It highlights key developments in VC deal activity, exit value, and the evolving policy landscape that affects the industry.

Main Points

1. VC Deal Activity in Q2 2025

• Total Deal Value: $3.9 billion, a 6% decrease from Q1 2025.
• Annual Average (Q4 2023–Q2 2025): $4.2 billion.
• H1 2025 Total Deal Value: $3.1 billion, surpassing the full-year 2024 total.
• Expected Full-Year 2025 Total: $16.1 billion, a 8.7% decrease from 2024's $17.6 billion.

2. Deal Value by Segment

• Dispatchable Energy Sources: $1.5 billion (largest by deal value).
• Grid Infrastructure: $1.4 billion (second largest).
• Intermittent Renewable Energy Sources: $803.4 million.
• Clean Fuels: $196.4 million.

3. Deal Count and Median Values

• Median Deal Value (H1 2025): $9.9 million, up 64.7% from 2024's $6 million.
• Deal Count (H1 2025): Lower than full-year 2024.
• Median Pre-Money Valuation (H1 2025): $25.6 million, up from $23 million in 2024, but still below 2022 and 2023 levels.

Key Deals in Q2 2025

Large Deals (≥ $100 million)

• TerraPower: $650 million (Nuclear Fission)
• Mainspring Energy: $258 million (Dispatchable Energy)
• Base Power: $200 million (Grid Infrastructure)

Early-Stage Deals (Pre-seed/Seed)

Early-Stage Deals (Series A–C)

VC Exit Activity

• H1 2025 Exit Value: $3.1 billion, exceeding the full-year 2024 exit value of $1.1 billion.
• Expected Full-Year 2025 Exit Value: $6.2 billion, still below the 2021–2023 levels.
• Major Exit: Zenergy's IPO on the Hong Kong Stock Exchange at a $2.5 billion valuation.

Policy and Market Challenges

1. US Policy Changes

• The One Big Beautiful Bill Act (OBBBA) introduced changes to the IRA tax credit framework.
• 45Y and 48E credits are now subject to accelerated phase-out timelines.
  • Projects must begin construction before 2034.
  • Solar and wind projects placed in service after 2027 face an earlier cutoff unless construction starts within 12 months of the bill's enactment.
• 25D Credit: No longer available for hardware purchased after 2025.
• 25C Credit: Faces a similar sunset, though not directly tied to clean energy generation.
• Supply Chain Transparency: Increased importance due to new compliance rules on equipment sourcing.

2. Grid Connection Challenges

• Interconnection Queues: A major bottleneck for clean energy projects.
• Legacy Model: "First come, first connected" is outdated for smaller, distributed projects.
• Zombie Projects: Stalled due to permitting, supply chain, land acquisition, or financing issues.
• Reforms in Progress:
  • US: Federal Energy Regulatory Commission introduced a "cluster study" process to streamline assessments.
  • UK: Ofgem announced a readiness-based model, prioritizing projects that are closer to completion.
  • EU: Several member states are exploring or implementing similar reforms.

Conclusion

The clean energy VC landscape in Q2 2025 shows a mix of growth and uncertainty. While deal values have increased, deal counts have decreased. Nuclear and geothermal technologies continue to attract significant investment due to their reliability and alignment with current policy preferences. The OBBBA introduces challenges for solar and wind developers, driving short-term acceleration in project development. Grid infrastructure and analytics remain key areas of focus, with ongoing reforms aimed at improving efficiency and reducing delays.