CO₂ certificates: Voluntary or compliance market (EU ETS)?

As companies move toward a sustainable future, they are increasingly focused on reducing their carbon footprint and mitigating the impacts of climate change. This article examines the two main carbon credit markets—the voluntary carbon market and the compliance carbon market—to explore their differences, the companies involved, their historical development, and the potential convergence of these markets.

The voluntary carbon market: A choice for sustainability

The voluntary carbon market offers companies the opportunity to offset their unavoidable carbon emissions and demonstrate their commitment to environmental sustainability. In this market, companies can proactively offset their emissions by purchasing CO₂ certificates, each representing one ton of carbon dioxide or an equivalent greenhouse gas.

How the voluntary market works

Industries ranging from technology, finance, retail to travel, regardless of size or location, can participate in the voluntary market. They purchase carbon credits from project developers engaged in carbon removal, renewable energy installations, reforestation initiatives, and energy efficiency projects, thus ensuring real emissions reductions.

Motivation for voluntary participation

Companies participate in the voluntary market because they are aware of their social responsibility. They want to enhance their brand reputation, attract environmentally conscious customers, attract talent who want their employer to support the climate, and promote sustainable practices. Participation in carbon offsetting allows them to demonstrate their commitment to combating climate change and contribute to global efforts to reduce emissions.

The Compliance Carbon Market: A Regulated Mechanism

In contrast, the compliance carbon market operates based on government-mandated regulations and emissions reduction targets. It targets very specific industries with a significant carbon footprint, such as power generation, the oil and gas industry, and cement production. The underlying unit is a pollution permit and is not linked to a carbon project, as is the case in the voluntary market.

Origin and framework of the compliance markets

The roots of the compliance market can be traced back to international climate agreements such as the Kyoto Protocol, which established legally binding emission reduction targets for industrialized countries. These agreements laid the foundation for regional and national emissions trading systems such as the EU ETS, California's cap-and-trade system, and China's national emissions trading system.

Ensuring emissions reductions by companies through compliance

Governments set these strict emissions targets annually and continue to reduce overall emissions. Compliance with the regulations requires regulated companies to achieve certain emissions reductions within their operations. Companies that fall below their threshold can sell these emission allowances to other companies that fall above their threshold.

Possible merger of voluntary and compliance markets

Both the voluntary and compliance carbon markets play an important role in global efforts to combat climate change and achieve sustainable development. There are discussions about merging the voluntary and compliance carbon markets to create a coherent approach to carbon trading and emissions reduction. Such a merger would require standardized measurements, transparency, and incentives for voluntary participation, while ensuring access and inclusivity.

What such a merger might look like is uncertain. Carbon emission reductions could become mandatory for all companies in the near future. This could be enforced through the emissions trading mechanism (compliance market) or simply through long-term reduction targets and penalties for non-achievement. Furthermore, companies could be legally obligated to offset all unavoidable emissions through carbon projects (voluntary market).

As global efforts to combat climate change intensify, both the voluntary and compliance carbon markets play a central role in achieving a net-zero society.