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Stardust Solutions

Category: AI in Climate / Energy

A solar geoengineering company developing a complete Stratospheric Aerosol Injection (SAI) system designed to reflect a small percentage of sunlight back into space to cool the planet. Stardust Solutions was founded in 2023. The company is led by Yanai Yedvab. Based in Tel Aviv, Israel. Team size: 10-50. Total funding raised: $75.0M. Latest round: Series A (Oct 2025). Key investors include Lowercarbon Capital, Exor (Agnelli family), SolarEdge, Awz Ventures, Quiet Capital.

Founded
2023
Headquarters
Tel Aviv, Israel
Team size
10-50
Total funding
$75.0M

Value proposition

Provides a scalable 'planetary thermostat' using proprietary, bio-safe particles that are more effective and safer than traditional sulfur-based geoengineering methods.

Products and solutions

Proprietary Reflective Particles — amorphous silica and calcium carbonate (Engineered for high reflectivity and safety), Stratospheric Dispersion System (Hardware designed to deagglomerate particles during release), Atmospheric Monitoring & AI Modeling Suite (Predictive tools for particle dispersion and climate impact analysis)

Unique value

Unlike traditional geoengineering concepts that use sulfur dioxide, Stardust utilizes a proprietary, non-toxic material described as 'safe as flour' to minimize environmental side effects like acid rain or ozone depletion.

Target customer

National governments, international environmental agencies, and global climate policy bodies.

Industries served

Climate Tech, Environmental Engineering, Government & Public Policy, Aerospace

Technology advantage

Leverages a 'dream team' of former Israeli defense and nuclear scientists (ex-IAEC) to apply high-stakes physics and clandestine project management to climate mitigation, combined with AI-driven atmospheric modeling.

How they differentiate

Stardust differentiates by using proprietary, non-toxic engineered particles described as 'safe as flour' rather than traditional sulfur dioxide. They also utilize advanced dispersion hardware designed to prevent particle agglomeration, backed by a team of former nuclear and defense scientists.

Main competitors

Make Sunsets, SCoPEx (Harvard University), Reflective Earth

Key partnerships

Lowercarbon Capital (Lead Investor), Exor (Agnelli family investment arm), SolarEdge (Strategic investor), Awz Ventures (Canadian-Israeli VC with defense ties), Holland & Knight (Lobbying and government affairs)

Notable customers

National governments (Target), International environmental agencies (Target)

Major milestones

Secured $15M Seed round led by Lowercarbon Capital in 2024, Closed $60M Series A/Growth round in October 2025, Published academic preprints revealing particle composition (amorphous silica, calcium carbonate) in May 2026, Released governance framework and guiding principles for responsible SRM research (April 2026)

Growth metrics

Transitioned from stealth to public R&D; team size expanded to 10-50 employees; scheduled first outdoor experiments for 2026.

Market positioning

High-science, institutional-grade solar geoengineering provider targeting government and international policy bodies.

Geographic focus

Global (Stratospheric deployment), with R&D operations based in Israel.

Patents and IP

Proprietary chemical composition of reflective particles and dispersion hardware designs are currently under patent-pending status (as of late 2025).

About Yanai Yedvab

Former Deputy Chief Scientist at the Israel Atomic Energy Commission (IAEC) with over 20 years of experience in nuclear physics and clandestine scientific programs. Previously served as CEO of Aleph8 and held senior advisory roles within the Israeli Ministry of Health regarding radiological safety and strategic research.

Official website: