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New Wave | Hugo Rauch | Substack
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Supported by:
Leonard: The innovation and foresight platform of the VINCI Group, to tackle some of the biggest challenges facing VINCI’s businesses: the digital revolution, the accelerating pace of innovation, and the environmental transition.
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🌊 The Next Climate Wave Is Built, Not Coded
Why decarbonizing the physical world requires better materials, specialist investors, patient capital, and a new approach to industrial adoption.
We’re joined by Juan Nieto of Zacua Ventures, an investor focused on the technologies reshaping construction, infrastructure, real estate, and the wider built environment.
Juan began his career as a civil engineer before moving into private markets and later joining Cemex’s corporate venture capital team. There, he saw firsthand that many of the technologies needed to decarbonize construction simply did not exist yet.
That realization eventually led him to help build Zacua Ventures: a specialist investment platform connecting ambitious founders with some of the world’s largest construction and industrial companies.
In this episode, we explore why the built environment represents one of climate tech’s largest, and most difficult, opportunities.
Construction is responsible for a major share of global emissions. But replacing cement, steel, insulation, and other foundational materials is not as simple as producing a better result in a laboratory.
A startup must meet strict performance standards, navigate regulation, integrate into deeply entrenched supply chains, win the trust of conservative buyers, finance industrial production, and prove that its technology works repeatedly in the real world.
The opportunity is enormous. So is the execution risk.
In our conversation, we covered:
→ Why cement is so difficult to decarbonize
→ What is really pushing construction companies to change
→ Why a superior material is not enough
→ How startups can compete with industrial incumbents
→ Why industrial scaling cannot follow the SaaS playbook
→ Where Juan sees the strongest material opportunities
→ Why specialist investors may see the next wave earlier
→ How AI is redirecting capital toward the physical world
→ Where robotics meets climate and construction
→ Why construction innovation is ultimately a humanitarian issue
Juan’s central message is clear:
The physical world will not decarbonize through one breakthrough material or one category-defining startup.
It will require coordinated progress across materials, energy, robotics, financing, regulation, industrial production, and customer adoption.
The next generation should not inherit a world where basic housing, clean water, electricity, and infrastructure have become less accessible. Innovation in the built environment is how we begin to change that.
✨ Leave a review and share the episode if this conversation challenged the way you think about growth, innovation, and sustainability.
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