Cloud Seeding Startup Raises $7.9M to Stop Lightning Strikes—But Scientists Remain Skeptical
Vancouver-based Skyward Wildfire claims it can prevent wildfires by suppressing lightning with Cold War-era chaff technology, drawing investment despite unproven efficacy and mid-century abandonment by U.S. agencies.
Vancouver startup Skyward Wildfire raised CAD $7.9 million ($5.7 million USD) to commercialize lightning-suppression technology that U.S. government researchers abandoned 50 years ago amid questions about effectiveness and environmental impact. The company, which deployed chaff-seeding operations across Canadian fire zones in 2024 and 2025, initially claimed it could prevent “up to 100% of lightning strikes”—a statement removed from its website following scrutiny from MIT Technology Review.
Skyward’s approach—dispersing aluminum-coated fiberglass chaff into storm clouds via aircraft—aims to redistribute electrical charge before lightning forms. According to company materials, the method “safely neutralizes the electrical potential in clouds” during high-risk fire weather. The funding, led by Climate Innovation Capital with participation from Active Impact Investments and Diagram Ventures, will scale deployments across North America’s boreal forests, where lightning strikes have nearly doubled since 1980.
The Science: Cold War Relics Meet Climate Crisis
Chaff seeding exploits a physical phenomenon: aluminum-coated fibers act as conductors in electrical fields, redistributing ions and theoretically preventing the charge buildup required for lightning discharge. NASA and NOAA conducted experiments from the early 1960s through 1975, with research showing that chaff “completely eliminated the electric field within 10 minutes” under certain conditions. A 1976 study found chaff reduced observed lightning strikes to “one third or less” of control storms.
Yet both Project Skyfire (1950s cloud seeding with silver iodide) and Project Thunderbolt (1970s chaff deployment) were discontinued—not strictly due to technical failure, but because of concerns over unintended consequences. According to researchers at the Bulletin of the American Meteorological Society, glaciogenic seeding threatened to “inadvertently redistribute rainfall in drought-stricken conditions,” while chaff posed risks of interfering with communication systems.
Modern chaff propellants contain PFAS (“forever chemicals”) that can contaminate soil and water for 1,000 years, according to a 2023 U.S. Department of Defense report. Studies show PFAS exposure reduces seed germination and causes DNA damage, though military reviews conclude airborne concentrations are unlikely to harm humans or wildlife.
Skyward has not published peer-reviewed data from its field trials. The company claims to have partnered with Alberta Wildfire in August 2024 to “prove suppression by plane and drone,” but Alberta Wildfire declined to comment to media inquiries. Without controlled trial data, atmospheric scientists express caution. Mike Flannigan of the University of Alberta and researchers at New Mexico Tech told MIT Technology Review they find the “up to 100%” claim implausible, noting that high-risk storm cells can produce tens of thousands of strikes over days.
Market Context: Wildfires as Existential Energy Risk
The commercial imperative is clear. Wildfires cost the U.S. economy $893 billion annually, with climate change increasing extreme fire years by 88-152% globally according to Nature Communications. Lightning ignites over 50% of North American burned area—rising to 93% in Canada’s 2023 catastrophic season, which emitted 2.4 gigatons of CO₂ equivalent to India’s annual output.
Skyward targets a narrow operational window: less than 0.1% of annual lightning activity occurs during extreme fire-risk conditions. This selectivity addresses environmental concerns—the company claims materials comply with U.S. and Canadian federal requirements—but also limits scalability. Climate Innovation Capital’s Kevin Kimsa calls lightning suppression “the primary driver of area burned in North America,” framing prevention as more cost-effective than suppression.
The technology intersects with critical Energy Infrastructure vulnerabilities. Power grids face dual wildfire threats: lines can ignite fires during high winds, while fires damage transmission systems. U.S. Department of Energy projections show wildfire probability increasing most severely in California, Nevada, Texas, and Montana through 2050—regions deploying large-scale solar farms. Inverter replacement for a 200-kW rooftop system costs $16,000; utility-scale damage runs to billions.
Lightning-suppression could theoretically protect renewable infrastructure in fire-prone zones, though Skyward has not disclosed partnerships with energy operators. The California Public Utilities Commission notes that while utility infrastructure causes fewer than 10% of wildfires, those fires account for roughly half of the state’s most destructive blazes. Public Safety Power Shutoffs—preemptive blackouts during extreme fire weather—disproportionately affect low-income communities lacking backup generation.
Diplomatic Angles: Boreal Cooperation and Data Opacity
Global wildfire risk concentrates in specific geographies. According to global risk mapping, Russia, Canada, Brazil, Angola, and the Democratic Republic of Congo face the highest forest fire exposure. Russia loses 2.5 million hectares annually to fires, while Australia’s 2019-2020 season killed 445 people through smoke inhalation alone.
| Country | Primary Risk Driver | Lightning Share |
|---|---|---|
| United States | Boreal/temperate forests, WUI expansion | ~50% |
| Canada | Boreal forests, climate-driven drying | ~85% |
| Australia | Eucalyptus forests, extreme heat | Variable |
| Russia | Siberian taiga, remoteness | High |
| Brazil | Amazon deforestation, agricultural burning | Low |
Skyward’s Canadian focus—where boreal forest temperatures rise at twice the global rate—positions it for potential transnational application. Yet the company has disclosed neither which provincial agencies it partnered with nor operational details. CEO Sam Goldman declined interview requests, and provincial wildfire services have not confirmed partnerships. This opacity complicates independent assessment and raises questions about governance frameworks for atmospheric intervention.
Mediterranean nations face escalating fire risk: Spain burned 70,000 hectares in 2022, while Greece’s 2024 Athens fires forced mass evacuations. If Skyward’s technology proves effective at scale, export markets in southern Europe, the Western U.S., and Australia could drive valuation—contingent on regulatory approval and environmental clearance.
The Skepticism: Chaff’s Checkered History
Recent unpublished research complicates the narrative. Paul Stepanian and Earle Williams of New Mexico Tech analyzed 35 storms with military chaff present versus 35 without, using Florida weather radar data. According to the American Geophysical Union conference abstract, chaff-laden storms were “smaller and shorter-lived”—but produced 62,250 total lightning flashes versus 24,492 in controls. The increase suggests chaff may suppress cloud-to-ground strikes while increasing intra-cloud lightning, with unclear implications for fire risk.
“I have a hard time believing that’s true. Some storm cells during high-risk fire periods are capable of delivering tens of thousands of strikes over hours or days.”
— Colin Bourbonnais, wildfire researcher, on Skyward’s original “up to 100%” claim
Bourbonnais, who studies wildfire technology applications, told The Narwhal that historical cloud-seeding efforts faced insurmountable prediction challenges: “Identifying which cells and systems are going to be problematic is incredibly difficult even as a starting point.” Skyward counters that its AI forecasting models—which prioritize storm cells, optimize flight paths, and target treatments—solve the 20th-century deployment problem. The company has not disclosed model architecture, training data, or validation metrics.
A fundamental question persists: should we suppress lightning at all? Fire ecologist perspectives emphasize that lightning-ignited fires play essential roles in forest regeneration. Bourbonnais notes the technology “precipitates this idea that fire is just bad, and that’s not the case.” Selective suppression during catastrophic risk windows may thread this needle, but operational criteria remain undisclosed.
What to Watch
Three developments will determine whether Skyward’s approach gains traction or joins Project Thunderbolt in the graveyard of atmospheric interventions:
- Peer-reviewed publication: Until Skyward releases controlled trial data showing statistically significant lightning reduction without increasing total flash counts, scientific credibility remains provisional.
- Regulatory frameworks: No jurisdiction has established approval pathways for commercial atmospheric charge manipulation. Canada and the U.S. will need to develop environmental impact protocols, particularly around PFAS contamination and unintended precipitation effects.
- Energy sector pilots: Partnerships with utilities or solar farm operators in California, Texas, or Alberta would validate commercial viability and provide measurable infrastructure protection metrics beyond fire prevention claims.
The 2026 North American fire season will offer early signals. U.S. drought conditions covered 69% of the country in January 2026, with above-normal wildfire risk forecast for Texas, Florida, and the Southeast. If Skyward achieves documented suppression during extreme lightning events—and publishes methodology—the $8 million seed round could appear prescient. If results mirror the ambiguous outcomes of 1970s trials, investors may discover that some problems resist technological disruption, even with AI and climate crisis urgency as forcing functions.
The broader implication extends beyond one startup: as climate change intensifies fire-weather conditions globally, the pressure to deploy experimental interventions will grow. Skyward represents a test case for whether mid-century technologies, abandoned for valid reasons, deserve reconsideration—or whether their resurrection reflects Silicon Valley’s reflex to optimize nature rather than adapt to it.