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The GHG Protocol: How a Global Standard is Reshaping Corporate Climate Actions
December 2, 2024In response to the growing threat of climate change, carbon markets have emerged as a key mechanism in the fight to reduce greenhouse gas emissions. These markets have transformed environmental regulation, incorporating economic incentives to drive innovation and sustainable practices. By assigning a financial value to carbon emissions, carbon markets create a powerful incentive for nations and industries to reduce their carbon footprints. This article traces the evolution of carbon markets, from their inception in the Kyoto Protocol (1997) to their expansion under the Paris Agreement (2015), and beyond.
Understanding Carbon Markets
At its core, a carbon market is a system that puts a price on carbon dioxide (CO2) emissions. It works on the principle that reducing emissions has an economic cost, and therefore, companies or countries that exceed their allowed emissions must pay for the privilege of polluting by purchasing carbon credits. Conversely, those who reduce emissions below their allowed quota can sell their excess allowances for profit.
There are two main types of carbon markets1:
- Compliance Markets: These are created by international treaties or national and sub-national regulations. They include cap-and-trade systems like the European Union Emissions Trading System (EU ETS), the largest carbon market in the world.
- Voluntary Markets: These allow companies, governments, and individuals to voluntarily offset their emissions by purchasing carbon credits. These credits often finance projects like reforestation or renewable energy projects.
Both compliance and voluntary markets operate based on the same principle: turning carbon emissions into a tradable commodity. However, compliance markets are typically larger, more regulated, and more robustly monitored to ensure environmental integrity.
The Kyoto Protocol: Laying the Groundwork
Adopted in 1997 and entering into force in 2005, the Kyoto Protocol is widely regarded as the starting point for formalized carbon markets. The protocol extended the United Nations Framework Convention on Climate Change (UNFCCC)2 and set legally binding emission reduction targets for industrialized nations, also known as Annex I countries.
Market-Based Mechanisms Under Kyoto
The Kyoto Protocol introduced three key market-based mechanisms that established the foundation for global carbon trading:
Clean Development Mechanism (CDM)
- Progress Since Introduction: CDM became a vital tool in promoting climate projects in developing nations, channeling significant investment into renewable energy, waste management, and energy efficiency projects. By 2012, over 7,500 projects were registered under CDM, mainly in countries like China, India, and Brazil. However, it faced criticism for potential “additionality” issues—whether projects would have happened without CDM funding—and for not always benefiting local communities.
- Current Status: After the Paris Agreement, CDM’s relevance waned as the global focus shifted to broader, more inclusive mechanisms under Article 6. Although it is set to phase out, some elements of CDM may transition into the new Article 6.4 mechanism, which is aimed at fostering similar projects under updated standards and governance frameworks.
Joint Implementation (JI)
- Progress Since Introduction: JI allowed emissions reductions to occur in developed countries and was largely utilized by nations in Eastern Europe and Russia. However, JI faced challenges with integrity and transparency; by 2012, reports highlighted that some JI projects were not achieving real emissions reductions, reducing the credibility of the mechanism.
- Current Status: JI effectively ended with the Kyoto Protocol’s expiration and has not been formally continued under the Paris Agreement. Its functions are largely superseded by the new cooperative approaches under Article 6, which aim to increase transparency and accountability in emissions reductions across nations.
Emissions Trading (Cap and Trade)
- Progress Since Introduction: Emissions trading systems, such as the EU Emissions Trading System (EU ETS), established in 2005, became central to carbon pricing efforts. The EU ETS, in particular, grew into the world’s largest carbon market, steadily reducing emissions within the region. However, some markets initially suffered from low carbon prices and excess credits, which impacted the system’s effectiveness.
- Current Status: Emissions trading remains a key mechanism, especially in regions like the EU, California, and China. Under the Paris Agreement, national and regional trading systems are being aligned and may potentially integrate through Article 6 to support a global carbon market. However, emissions trading schemes now operate under stricter rules, and their designs continue to evolve to achieve greater emissions reductions.
These mechanisms created the first global framework for carbon trading, transforming carbon emissions into a tradable commodity. This approach sought to reduce emissions efficiently, regardless of geographic location, while promoting investment in sustainable development and clean technology in developing countries.
Kyoto’s Role in Emission Reductions
The Kyoto Protocol primarily focused on industrialised nations, mandating an overall emissions reduction of 5% below 1990 levels during the first commitment period (2008-2012). Although it faced several challenges—most notably the United States’ refusal to ratify the agreement and concerns about the environmental integrity of the CDM—Kyoto’s introduction of market-based mechanisms paved the way for the next generation of climate agreements. The experiences gained from Kyoto, especially the need for broader participation and more stringent oversight, would influence the design of future carbon markets.
The Paris Agreement: A Paradigm Shift
The Paris Agreement, adopted in 2015, marked a significant shift in the global climate policy framework. While Kyoto was a top-down approach that imposed binding targets on developed nations, Paris introduced a more inclusive, bottom-up approach that required all nations—developed and developing alike—to set their own targets, known as Nationally Determined Contributions (NDCs).
Key Features of the Paris Agreement
- Universal Participation: The Paris Agreement required every signatory to submit its own climate action plans, or NDCs. This departure from Kyoto’s focus on developed countries reflected the growing importance of emissions reductions from developing nations.
- Global Temperature Goals: The agreement set the long-term goal of limiting global warming to “well below 2°C” above pre-industrial levels and pursuing efforts to limit the increase to 1.5°C.
- Flexibility and Progression: Countries are required to submit updated NDCs every five years, with each successive NDC expected to be more ambitious than the previous one.
Carbon Markets in the Paris Agreement
The Paris Agreement retained the concept of market mechanisms but made several key updates under Article 6, which outlines both market and non-market approaches to international cooperation on climate action.
- Cooperative Approaches (Article 6.2): This framework allows countries to engage in bilateral and multilateral transfers of mitigation outcomes to meet their NDCs. It effectively creates an international market for carbon credits.
- Sustainable Development Mechanism (Article 6.4): Seen as the successor to Kyoto’s CDM, this mechanism focuses on creating emission reduction credits that support sustainable development.
- Non-Market Approaches (Article 6.8): Recognizing that not all climate action can be market-driven, this provision supports activities such as climate finance, technology transfer, and capacity building.
Challenges and Opportunities
The implementation of Article 6 has been one of the more contentious aspects of the Paris Agreement. Negotiations around the detailed rules for carbon trading, the transition of Kyoto-era credits, and the prevention of double-counting 3have been ongoing. However, the inclusive and flexible nature of the Paris Agreement offers broader participation and creates the potential for a more expansive and globally integrated carbon market.
Global Policy Frameworks and National Initiatives
European Union Emissions Trading System (EU ETS): Established in 2005, the EU ETS is the world’s largest and most established carbon market. It operates on a cap-and-trade principle, where the cap on emissions reduces over time, incentivizing companies to innovate and reduce emissions.
China’s National Emissions Trading System: Launched in 2021, China’s ETS covers the power sector but is set to expand. China, as the largest global emitter, plays a critical role in shaping the future of carbon markets.
California’s Cap-and-Trade Program: One of the most prominent in the U.S., this program covers 85% of California’s emissions. Revenues generated are reinvested in renewable energy and emissions reduction projects.
India’s National Carbon Market Program: Set to launch in 2025-2026 under the LiFE (Lifestyle for Environment) Mission, India’s National Carbon Market will play a crucial role in reducing emissions, encouraging sustainable practices, and fostering low-carbon innovations. As India is the world’s third-largest emitter, this market will be pivotal in shaping the country’s climate policy and contributing to global carbon market dynamics. The program will likely evolve alongside international markets, providing new opportunities for emissions reduction and driving India’s long-term climate goals.
Case Study: India’s Perform, Achieve, and Trade (PAT) Scheme
While India has not yet implemented a comprehensive national emissions trading system, it has established multiple market-based mechanisms to drive energy efficiency and renewable energy adoption.
- Perform, Achieve, and Trade (PAT) Scheme: The PAT scheme is a flagship energy efficiency program targeting key industrial sectors. Launched with the goal of reducing emissions, it allows industries that exceed their energy efficiency targets to earn and trade energy-saving certificates, providing flexibility and financial incentives for compliance.
- Renewable Purchase Obligation (RPO) Framework: Introduced under the Electricity Act of 2003, the RPO framework initially set targets for renewable energy procurement, requiring distribution companies, open access consumers, and captive power producers to source a minimum percentage of their energy from renewable sources. This mandate has been a significant driver for renewable energy growth in India, encouraging stakeholders to support the clean energy transition.
- Renewable Energy Certificates (REC): Launched in 2010 to bolster the RPO framework, the REC system provides flexibility in meeting renewable energy targets. Obligated entities can purchase RECs—certificates representing renewable energy generation—if they cannot directly source renewable power. This system has facilitated compliance and supported the growth of renewable energy by creating a market for these certificates.
With the National Carbon Market under the LiFE (Lifestyle for Environment) Mission expected to launch by 2025-2026, these mechanisms will likely integrate into a broader carbon market framework, enhancing India’s ability to meet its climate goals. This new national market will build on the success of these existing programs, expanding to cover a wide array of emissions sources and providing a more comprehensive approach to reducing greenhouse gases across industries.
Carbon Markets and Renewable Energy Incentives
Carbon markets have increasingly been integrated with renewable energy incentives, driving the transition to a low-carbon economy. In countries like India, mechanisms such as the Renewable Energy Certificate (REC) market play a vital role in promoting clean energy. India’s REC mechanism allows renewable energy producers to earn certificates for every megawatt-hour (MWh) of electricity generated, which can then be traded on power exchanges. This system helps states with lower renewable energy potential meet their Renewable Purchase Obligations (RPOs) while creating a market for clean energy.
The Future of Carbon Markets
The future of carbon markets will be shaped by emerging climate goals, such as the push for net-zero emissions and limiting global temperature rise to 1.5°C. These ambitious targets will require greater international cooperation, technological innovation, and a scaling up of carbon markets.
- Technological Innovations: Carbon markets may integrate technologies such as carbon capture and storage (CCS) and blockchain to improve transparency and monitoring.
- Nature-Based Solutions: Future markets may emphasize nature-based solutions like forest conservation and restoration.
- Sector-Specific Markets: Carbon markets may expand into specific industries such as aviation, shipping, and cement.
- Linkages Between Markets: Linking national and regional markets could create a more integrated global system, making it easier for countries to achieve their NDCs.
Conclusion
The evolution of carbon markets reflects a growing, urgent need to tackle climate change through adaptable and cost-effective policy solutions. From the foundational mechanisms under the Kyoto Protocol to the more inclusive frameworks of the Paris Agreement, carbon markets have become a powerful tool in global efforts to reduce emissions. As countries increasingly adopt and refine their carbon trading systems, these markets continue to evolve, integrating renewable energy incentives, technological innovations, and nature-based solutions.
Looking ahead, the journey of carbon markets is far from over. Emerging goals, such as net-zero emissions and limiting global temperature rise, demand further adaptation and policy advancement. In the coming articles, we’ll explore the specifics of carbon market operations, the evolving role of technology, and the growing importance of sector-specific markets. This next phase in carbon market development promises to be both; challenging and essential, as it drives us closer to a sustainable, low-carbon future.
References
- Michaelowa, A., & Shishlov, I. (2019). “Evolution of international carbon markets: Lessons for the Paris Agreement.” Zurich Open Repository and Archive.
- Caciagli, V. (2018). “Emission trading schemes and carbon markets in the NDCs: Their contribution to the Paris agreement.” Springer.
- Nylander, J. (2015). “Carbon trading in a Paris Agreement.” Fores Study.
- Hepburn, C. (2007). “Carbon trading: A review of the Kyoto mechanisms.” Annu. Rev. Environ.
- OECD Working Paper on interplay of carbon mechanism ↩︎
- UNFCCC on Kyoto Protocol ↩︎
- Double-counting refers to the risk in carbon markets where the same emissions reduction is claimed more than once. ↩︎