The cost of carbon: from offsetting emissions to financing the transition

This is article 4 in the Sustainability Blueprint series. Here is article 3.

For much of modern economic history, greenhouse gas emissions have been treated as an externality – a cost borne by society rather than by those generating it. Economic growth, industrial development and energy production have largely evolved without fully accounting for the environmental impact of carbon emissions. While labor, land, energy and capital have long carried a measurable economic value, the atmosphere has largely been treated as a shared resource with no direct price attached to its use.

Carbon markets emerged as an attempt to address this imbalance. By assigning financial value to emissions, they seek to create incentives for reduction while directing capital towards decarbonization. As the investment needs continue to grow, carbon markets are moving beyond offsetting and becoming part of a broader discussion about how the transition will be financed.

Pricing the transition

The scale of that financing challenge is becoming increasingly clear. Despite decades of climate negotiations and proposed corporate commitments, global emissions have continued to rise, while the physical impacts of climate change are becoming more visible across economies, supply chains and communities. Current policies are projected to result in approximately 3.1°C of warming by the end of the century, significantly above the Paris Agreement’s 1.5°C ambition. I believe closing the gap between climate ambition and climate outcomes will require not only emissions reductions, but significant investment in new technologies and infrastructure.

Carbon markets attempt to support this transition by rewarding lower-carbon activities and increasing the cost of emissions-intensive ones.

Yet experience has shown that carbon pricing is not equally effective across every sector. In areas such as renewable energy, electric vehicles and energy efficiency, regulations and targeted subsidies have often been just as important. Where carbon markets may prove most valuable is in sectors often described as “hard to abate”, including steel, cement, chemicals, aviation and shipping, where decarbonization remains technically complex and economically challenging.

The European Union’s Emissions Trading System is one of the clearest examples of carbon pricing in practice. Since its launch in 2005, emissions from power generation and energy-intensive industries have fallen significantly, demonstrating how carbon pricing can support emissions reductions when combined with broader policy measures and technological change. In these industries, carbon markets are becoming less about influencing consumer behavior and more about helping reshape the economics of industrial transformation.

A market under scrutiny

Despite their growing importance, carbon markets have also become one of the most contested areas of sustainable finance.

Much of this scrutiny has focused on voluntary carbon markets, where organizations purchase credits linked to projects that reduce, avoid or remove emissions. While these markets have helped channel funding to activities ranging from reforestation and ecosystem restoration to emerging carbon removal technologies, concerns have emerged on whether all credits deliver the environmental outcomes they claim.

Questions around additionality, permanence and double counting have prompted growing scrutiny from regulators, investors and stakeholders. Some projects have been criticized for generating credits for emissions reductions that may have occurred regardless of market incentives. In others, concerns have focused on whether reductions can be reliably measured and maintained over time.

Rather than signaling failure, these debates may represent an important stage in the market’s evolution. Increasingly, attention is moving away from the volume of credits generated and towards the quality, transparency and credibility of those credits. Trust, ultimately, may prove to be one of the market’s most valuable assets in this regard.

Beyond offsetting

This focus on credibility comes at a time when carbon markets are evolving from a mechanism designed to compensate for emissions into one increasingly expected to finance the transition itself. The conversation is no longer just about offsets, but on how carbon markets can support investment in technologies, projects and industrial transformation needed to meet long-term climate goals.

Recent progress under Article 6 of the Paris Agreement may further support that shift. By establishing clearer rules for international carbon trading, countries are moving closer to a more consistent global framework that could improve transparency, reduce fragmentation and potentially unlock additional climate finance, particularly in emerging markets.

Looking ahead

Carbon markets alone will not solve climate change, nor should they be viewed as a substitute for direct emissions reductions. Their greatest contribution may be mobilizing capital for the transition, particularly in sectors where decarbonization remains difficult and costly.

The success of carbon markets will arguably depend not only on pricing emissions, but on building the trust, integrity and scale required to help finance one of the largest economic transitions in modern history.

This article is also published on LinkedIn. illuminem Voices is a democratic space presenting the opinions of leading Sustainability Thought Leaders, their views do not necessarily represent those of illuminem.

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