TED Talks Daily
TED Talks Daily

Sunday Pick: Tech Solutions (#3): How one of China’s biggest tech companies is tackling carbon removal (with Xu Hao)

November 30, 2025

Summary

⏱️ 9 min read

Overview

Dr. Xu Hao, Vice President of Sustainable Social Value at Tencent, discusses the tech giant's ambitious carbon removal initiatives and the role of corporations in addressing climate change. He explains how Tencent's CarbonX platform is funding breakthrough technologies in hard-to-abate sectors, leveraging digital innovation to advance decarbonization, and using video games to educate millions about climate issues. The conversation explores the challenges of scaling carbon removal technologies, the importance of diversifying solutions, and the intersection of business value and sustainability goals.

The Challenge of Scaling Carbon Removal Technologies

Dr. Hao identifies cost as the single biggest barrier preventing carbon removal technologies from achieving widespread adoption. He explains how technologies must transition from laboratory-scale operations dealing with kilograms to industrial applications handling thousands or millions of tons. Without viable low-carbon options available, industries face technology lock-in effects where building high-carbon plants locks in emissions for 15-30 years, making early-stage investment in multiple solutions critical.

  • The single biggest challenge for carbon removal technologies is their current high cost, requiring technological advancement to reduce prices and enable scaling
  • Technologies must transition from laboratory scale (kilograms) to industrial impact (thousands or millions of tons) to materially help industries decarbonize
  • Without available low-carbon alternatives, industries experience technology lock-in where building high-carbon plants locks in emissions for 15-30 years
" The single challenge they face is actually they cost too much today right So we really need to push the technology forward so that they can reduce their cost and they can scale up. Then they can play a big role. "

Carbon Utilization Startups Competing Without Carbon Pricing

Through CarbonX's first cohort, Tencent discovered that many winning startups focused on carbon utilization in China, where they must compete directly with fossil fuel alternatives without the benefit of carbon pricing covering most of the economy. Remarkably, these startups are succeeding—producing cement, chemicals, and materials using captured CO2 at costs equal to or lower than traditional methods. This demonstrates that carbon removal can be economically viable even without regulatory support, similar to how solar, wind, and EVs became cost-competitive.

  • Most CarbonX winning startups focus on carbon utilization, competing head-to-head with fossil fuel alternatives without carbon pricing support
  • Startups are making cement using steel slag and CO2, plus producing chemicals and organic materials at costs similar to or cheaper than fossil fuel alternatives
  • Sustainable aviation fuel production shows a viable pathway to cost competitiveness, even though currently more expensive
  • These emerging technologies represent the next wave after solar, wind, EVs, and batteries that already compete directly with fossil fuels
" They can make cement using steel slag and carbon dioxide at a similar cost or sometimes even less than the fossil fuel alternative. They can make organic material. They can make chemicals using carbon dioxide cheaper than the traditional way. "

📚 6 more sections below

Sign up to unlock the complete summary with all insights, key points, and quotes