Climate Tech (2026)

1. Bill Gates
2. Elon Musk
3. John Doerr
4. Jennifer Granholm
5. Al Gore
6. Jigar Shah
7. Chris Sacca
8. Vinod Khosla
9. Katharine Hayhoe
10. Greta Thunberg

The 100 Most Influential Climate Leaders of 2025

Determining a definitive ranking of individual influence in climate tech involves weighing distinct forms of impact, such as capital allocation, technological innovation, policy shaping, and public advocacy. Based on their widespread global impact, thought leadership, and contributions to driving the green energy transition, here are 10 highly influential voices in the space, ordered approximately from broadest macroeconomic and policy leadership to technical and scientific advocacy:

1. Paul Polman Top Sustainability & ESG Leaders of 2026

2. Christiana Figueres Top Sustainability & ESG Leaders of 2026

3. Bill Gates

4. Vinod Khosla

5. Andrew Winston Top Sustainability & ESG Leaders of 2026

6. Katharine Hayhoe Top 10 U.S. Social Media Influencers in Energy & Environment

7. Jesse Jenkins Top 10 U.S. Social Media Influencers in Energy & Environment

8. Jigar Shah

9. Ayana Elizabeth Johnson Top 10 U.S. Social Media Influencers in Energy & Environment

10. Akshat Rathi 2025 Speakers | SOSV Climate Tech Summit

Here are 10 of the most prominent and influential individual voices driving climate technology, policy, and innovation, ranked from most to least influential based on their global capital allocation, systemic impact, scientific communication, and thought leadership:

Bill Gates (Founder of Breakthrough Energy, investing heavily in early-stage climate tech and zero-carbon innovations)

Jigar Shah (Director of the Loan Programs Office at the U.S. Department of Energy, deploying massive scale capital into innovative clean energy infrastructure)

Christiana Figueres (Former UN Climate Chief and co-founder of Global Optimism, a principal architect of global climate action frameworks)

Katharine Hayhoe (Chief Scientist for The Nature Conservancy and climate communicator bridging science, society, and technology)

Jean-Marc Jancovici (Founder of Carbone 4 and President of The Shift Project, highly influential European voice on carbon accounting and energy constraints)

Johan Rockström (Director of the Potsdam Institute for Climate Impact Research, known for defining planetary boundaries and Earth resilience science)

Kate Brandt (Chief Sustainability Officer at Google, leading corporate tech sustainability, procurement of 24/7 carbon-free energy, and circular tech initiatives)

Carmichael Roberts (Investment Committee co-lead at Breakthrough Energy Ventures, steering venture capital into breakthrough decarbonization hardware)

Alejandro Litovsky (Founder and CEO of Earth Security, advising global finance and tech sectors on systemic climate risk and nature-tech solutions)

Azeem Azhar (Creator of Exponential View , prominent analyst focusing on how exponential technologies reshape energy systems and climate transition) Top 25 LinkedIn Influencers in Climate Tech, SustainabilityInside Bill's Brain: Decoding Bill GatesTOP 10 Most-Read Thought Leaders in Climate ChangeTop 200 Creators · Climate Tech · Instagram · United States

Would you like me to expand on specific investment portfolios or key technological focus areas for any of these individuals?

Jean-Marc Jancovici Alastair Child Juliann Edwards Andreas Aepli Tom Chi Julie Pullen Ben Eidelson Jigar Shah Fatih Birol Katharine Hayhoe

Here are the top 10 most influential individual voices in climate tech today, ranked from most to least influential:

1. Christiana Figueres – Former Executive Secretary of the UNFCCC, key architect of the Paris Agreement.

2. Laurence Tubiana – CEO of the European Climate Foundation, central figure in shaping EU climate policy.

3. Johan Rockström – Director of the Potsdam Institute for Climate Impact Research, pioneer of the “planetary boundaries” framework.

4. Sandrine Dixson-Decleve – Co-president of the Club of Rome, influential in climate governance and sustainable transition.

5. Andrea Gori – Founder of illuminem and Greentech professor at HEC Paris, recognized as a global impact maker.

6. Dawid Hanak – Leading expert on net-zero technologies, shaping sustainable transport and industrial decarbonization.

7. Jessica Burley – Climate tech strategist at June AI, known for reframing climate tech into broader green tech innovation.

8. Elena Morettini – Global Head of Sustainable Business at Globant, influential voice on digital sustainability and AI ethics.

9. Erik Solheim – Former UNEP Executive Director, advocate for climate leadership in the Global South.

10. Giulio Boccaletti – Environmental scientist and author, expert on water security and climate resilience.

Why These Leaders Matter

• Global Governance & Policy: Figueres and Tubiana are central to international climate negotiations and frameworks.

• Scientific Authority: Rockström’s planetary boundaries research is foundational for climate risk assessment.

• Systems Change: Dixson-Decleve and Solheim push for systemic shifts in governance and equity.

• Tech & Innovation: Gori, Hanak, Burley, and Morettini represent the bridge between climate science and scalable technology solutions.

• Resilience & Resources: Boccaletti’s work on water and ecosystems highlights critical adaptation strategies.

Risks & Trade-offs

• Influence vs. Implementation: While these voices shape discourse, translating ideas into policy and scalable technology remains uneven.

• Regional Gaps: Leadership is still concentrated in Europe and the Global North, though Solheim emphasizes Global South perspectives.

• Tech Hype vs. Reality: Burley’s critique of “climate tech” warns against overpromising without commercial viability.

Key Takeaway

If you want to follow the most influential voices in climate tech, start with Christiana Figueres, Laurence Tubiana, and Johan Rockström for governance and science, then look to Andrea Gori and Dawid Hanak for innovation and technology. Together, these ten individuals represent the cutting edge of climate action across policy, science, and tech.

TOP 10 Most-Read Thought Leaders in Climate Change | illuminemTOP 10 Most-Read Thought Leaders in Green Tech | illuminemTOP 10 Most-Read Thought Leaders in Environmental Sustainability | illuminem