· Venture Capital Tracker Editorial · investment-strategies
Rainmaker Raises $100M Series B for Drone-Based Cloud Seeding
Rainmaker raised a $100 million Series B from NOA, Upfront, DCVC, Lowercarbon and Dream Ventures to scale drone-based cloud seeding and weather modification.
Rainmaker raised a $100 million Series B on September 21, 2026 to expand drone-based cloud seeding and weather-modification operations.
NOA VC, Upfront Ventures, DCVC, Lowercarbon Capital and Dream Ventures participated. The announcement did not identify a lead investor or disclose a valuation.
Deal terms
| Field | Detail |
|---|---|
| Company | Rainmaker |
| Financing | $100M Series B |
| Investors | NOA VC; Upfront Ventures; DCVC; Lowercarbon Capital; Dream Ventures |
| Lead | Not identified |
| Valuation | Not disclosed |
| Status | Company announced |
Why this financing matters
Rainmaker is applying autonomous aircraft, sensing and operational software to an old and scientifically complex field. The venture case is that better targeting, measurement and lower-cost deployment can make cloud seeding more useful as drought and water scarcity intensify.
But weather modification is not a normal software market. Results depend on atmospheric conditions, regulatory approvals, environmental assessment and credible attribution. A successful deployment must show that additional precipitation came from the intervention rather than natural variation.
What requires attribution
Rainmaker's precipitation, cost and validation figures are company claims. The financing announcement does not disclose revenue, contract backlog, customer concentration or independent study results.
Bottom line
The close is confirmed at $100 million, making it one of the larger climate-and-water Series B rounds of 2026. The core reporting question is whether Rainmaker can produce independently measured water gains at commercial scale.
Follow Venture Capital Tracker in Google
Add VCT as a preferred source to make our venture-capital coverage easier to find in Google Search.
Last updated:
Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.
