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As global temperatures persist in rising to concerning new highs, national governments, multinational corporations, small businesses, and individuals are all urgently exploring ways to substantially reduce greenhouse gas emissions and mitigate climate change risks. One increasingly popular and impactful method that is gaining significant traction is the use of carbon credits to provide powerful financial incentives for businesses and consumers to cut emissions and support the rapid development of renewable energy sources.

This informative post is the 4th installment in our acclaimed new series based on our organization’s highly regarded 2023 Climate Change and Carbon Markets Annual Report.

The previous posts in this illuminating series so far have been:

In this post, we will take a closer look at various energy sources and strategies, emphasizing the importance of diverse solutions like fuel switching, renewables, nuclear energy, and carbon capture to combat climate change and achieve a sustainable energy future..

The Wedge Theory – A Portfolio Approach to Emissions Reductions

Climate experts propose a “wedge theory” framework to conceptualize the portfolio of solutions needed to reduce greenhouse gas (GHG) emissions and stabilize the climate. This approach requires deploying diverse technologies and strategies, each providing a “wedge” of avoided emissions adding up to the total reductions needed. The original theory called for 7 wedges, but emissions have continued rising, so 9 are now required. Wedges include renewables, nuclear energy, fuel switching, energy efficiency, forests and soils, and carbon capture and storage.

Understanding Fuel Switching

Fuel switching entails replacing carbon-intensive fuels like coal and oil with less carbon-intensive ones like natural gas. For example, switching from coal to gas can decrease power plant emissions by 60% per kilowatt-hour.

  • Coal: 25 metric tons carbon per terajoule
  • Oil: 20 metric tons carbon per terajoule
  • Natural Gas: 14 metric tons carbon per terajoule

So switching to gas provides a “bridge” to zero-carbon energy systems. The shale gas boom enabled by hydraulic fracturing accelerated this trend in the United States. However, the environmental impacts of techniques like fracking cannot be disregarded.

Nuclear Energy: A Renewable Source?

Nuclear energy, often hailed as a clean energy source, is derived from the process of splitting uranium atoms through fission. This fission process heats water to produce steam, which in turn spins turbines, ultimately generating electricity. The entire procedure emits no greenhouse gases, making it an attractive option in the fight against climate change. However, the question of whether nuclear energy can be classified as “renewable” remains a topic of contention among experts and environmentalists. While it offers a more sustainable alternative to fossil fuels, concerns about radioactive waste, the finite nature of uranium resources, and potential safety risks make its categorization as a renewable energy source debatable.

Harnessing Inexhaustible Sources: The Role of Renewables

Renewable energy derived from inexhaustible natural sources like sunlight, wind, and water offers immense potential with little to no GHG emissions. Growing renewables is crucial for climate change mitigation.

Solar Energy: Ever Improving Technologies

Solar energy, a cornerstone of renewable power sources, harnesses the abundant energy radiated by the sun. This is achieved primarily through two technologies: photovoltaics (PV) and concentrated solar plants. Photovoltaic cells, commonly known as solar panels, are designed to directly convert sunlight into electricity. They achieve this transformation using specially crafted semiconductor materials that capture photons and initiate an electric current. One of the standout features of solar PV systems is their adaptability. They can be installed on a grand scale for utility purposes, powering entire communities or even cities. Alternatively, they can be set up in smaller, distributed configurations, such as on rooftops of individual homes, allowing homeowners to generate their own electricity and even feed excess power back into the grid. As technology continues to advance, the efficiency and applications of solar energy are bound to expand, making it an even more integral part of our energy landscape.

Geothermal Energy: Tapping into Earth’s Heat

Geothermal energy is a remarkable form of power that taps into the Earth’s innate thermal energy stored beneath its crust. This energy originates from the radioactive decay of materials deep within the planet and the original heat from Earth’s formation. In regions with pronounced subsurface temperatures, often marked by volcanic or tectonic activity, the potential for generating geothermal electricity is especially high. The typical process involves accessing hot water reservoirs located below the surface. This water, when pumped up through specialized wells, transforms into steam due to the pressure difference. This steam then propels turbine generators, converting the Earth’s heat into usable electricity. As a sustainable and environmentally friendly energy source, geothermal power offers a consistent and reliable alternative to more conventional power generation methods.

Hydro and Wind: Leveraging Flowing Resources

Hydropower converts the kinetic energy of flowing water into electricity using turbine generators. Dams with reservoirs
offer reliable large-scale hydro electricity, while run-of-river systems have lower impact.

Wind power harnesses the kinetic energy of wind, again turning turbines to produce power. Onshore and offshore wind farms are rapidly expanding as costs plummet.

But hydropower and wind face challenges in location constraints, transmission needs, and intermittency. Still, they are vital and growing pieces of the renewables puzzle.

Bioenergy: Leveraging Natural Carbon Sinks

Bioenergy stands out as a unique form of renewable energy because it taps into the chemical energy naturally stored within organic materials. This energy is derived from both living organisms, like plants and animals, and those that have recently died. A diverse range of sources, including forest biomass, residues from agricultural activities and livestock, as well as various waste streams, can be converted into renewable electricity, fuels for transportation, and heat for homes and industries.

However, it’s essential to approach bioenergy with a discerning eye. While it holds great potential, not every form of bioenergy is environmentally beneficial. For instance, clearing vast expanses of forests to cultivate energy crops can lead to significant carbon emissions and disrupt delicate ecosystems. This not only negates the carbon benefits but also poses threats to biodiversity. Looking at the positive aspects, bioenergy can be obtained from waste biomass or cultivated on lands that are not suitable for other agricultural purposes. This not only provides a sustainable solution, but also has a positive impact on the climate. Such practices ensure that greenhouse gas emissions are minimized, making bioenergy a viable and eco-conscious energy alternative.

Waste-to-Energy: Capturing Landfill Gas

Landfill gas (LFG) projects prevent methane emissions from landfills by capturing methane for flaring or energy use. Methane is a potent greenhouse gas, so converting it to CO2 via combustion provides immediate climate benefits. LFG projects also reduce local air pollution.
Captured LFG can be used onsite for electricity, heat, or even vehicle fuel. These projects provide environmental and socio-economic benefits to communities near landfills.

Sequestering Carbon: Storing Away Emissions

Carbon capture, utilization, and storage (CCUS) aims to balance continued fossil fuel use with equivalent carbon storage elsewhere. CCUS removes CO2 from large point sources like power plants or directly extracts CO2 from ambient air. The carbon is then stored via injection into geologic formations, old oil and gas reservoirs, or chemical conversion into stable solids.
While technologically feasible, CCUS still faces challenges with scaling up infrastructure, ensuring permanent storage, and lowering costs. More investment is needed to develop CCUS into a viable wedge.

The All-Out Effort Needed

Bending the global emissions curve downwards requires urgent economy-wide action across all sectors. Intelligently leveraging fuel switching, nuclear energy, renewables, bioenergy, and eventually carbon storage provides paths to a carbon-neutral future. But the clock is ticking. Successfully activating these climate wedges demands policies, partnerships, and funding on a massive scale. Our future depends on rising to this great challenge.

To learn more about the role fuel switching plays in fighting climate change contact us for the full report.

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Photo by Jason Blackeye on Unsplash

Carbon Footprint

Carbon credit project stewardship: what happens after credit issuance

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A carbon credit purchase is not a transaction that closes at issuance. The credit may be retired, the certificate filed, and the reporting box ticked. But on the ground, in the forest, in the field, and in the community, the work continues. It endures for years. In many cases, for decades.

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Carbon Footprint

Industries with the biggest nature footprints and what their decarbonisation looks like

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A corporate carbon footprint is never just an accounting figure. It maps onto real ecosystems. Before a product leaves the factory gate, something on the ground has already paid the cost. A forest has been converted. A river has been depleted. A patch of savannah that was once home to dozens of species now grows a single crop in every direction.

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Carbon Footprint

Apple, Amazon Lead 60+ Firms to Ease Global Carbon Reporting Rules

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Apple, Amazon Lead 60+ Firms to Ease Global Carbon Reporting Rules

More than 60 global companies, including Apple, Amazon, BYD, Salesforce, Mars, and Schneider Electric, are pushing back against proposed changes to global emissions reporting rules. The group is calling for more flexibility under the Greenhouse Gas Protocol (GHG Protocol), the most widely used framework for measuring corporate carbon footprints.

The companies submitted a joint statement asking that new requirements, especially those affecting Scope 2 emissions, remain optional rather than mandatory. Their letter stated:

“To drive critical climate progress, it’s imperative that we get this revision right. We strongly urge the GHGP to improve upon the existing guidance, but not stymie critical electricity decarbonization investments by mandating a change that fundamentally threatens participation in this voluntary market, which acts as the linchpin in decarbonization across nearly all sectors of the economy. The revised guidance must encourage more clean energy procurement and enable more impactful corporate action, not unintentionally discourage it.”

The debate comes at a critical time. Corporate climate disclosures now influence trillions of dollars in capital flows, while stricter reporting rules are being introduced across major economies.

The Rulebook for Carbon: What the GHG Protocol Is and Why It’s Being Updated

The Greenhouse Gas Protocol is the world’s most widely used system for measuring corporate emissions. It is used by over 90% of companies that report greenhouse gas data globally, making it the foundation of most climate disclosures.

It divides emissions into three categories:

  • Scope 1: Direct emissions from operations
  • Scope 2: Emissions from purchased electricity
  • Scope 3: Emissions across the value chain
scope emissions sources overview
Source: GHG Protocol

The current Scope 2 rules were introduced in 2015, but energy markets have changed since then. Renewable energy has expanded, and companies now play a major role in funding clean power.

Corporate buyers have already supported more than 100 gigawatts (GW) of renewable energy capacity globally through voluntary purchases. This shows how influential the current system has been.

The GHG Protocol is now updating its rules to improve accuracy and transparency. The revision process includes input from more than 45 experts across industry, government, and academia, reflecting its global importance.

Scope 2 Shake-Up: The Battle Over Real-Time Carbon Tracking

The proposed update would shift how companies report electricity emissions. Instead of using flexible systems like renewable energy certificates (RECs), companies would need to match their electricity use with clean energy that is:

  • Generated at the same time, and
  • Located in the same grid region.

This is known as “24/7” or hourly or real-time matching. It aims to reflect the actual impact of electricity use on the grid. Companies, including Apple and Amazon, say this shift could create challenges.

GHG accounting from the sale and purchase of electricity
Source: GHG Protocol

According to industry feedback, stricter rules could raise energy costs and limit access to renewable energy in some regions. It can also slow corporate investment in new clean energy projects.

The concern is that many markets do not yet have enough renewable supply for real-time matching. Infrastructure for tracking hourly emissions is also still developing.

This creates a key tension. The new rules could improve accuracy and reduce greenwashing. But they may also make it harder for companies to scale clean energy quickly.

The outcome will shape how companies measure emissions, invest in renewables, and meet net-zero targets in the years ahead.

Why More Than 60 Companies Oppose the Changes

The companies argue that stricter rules could slow climate progress rather than accelerate it. Their main concern is cost and feasibility. Many regions still lack enough renewable energy to support real-time matching. For global companies, aligning energy use across different grids is complex.

In their joint statement, the group warned that mandatory changes could:

  • Increase electricity prices,
  • Reduce participation in voluntary clean energy markets, and
  • Slow investment in renewable energy projects.

They argue that current market-based systems, such as RECs, have helped scale clean energy quickly over the past decade. Removing flexibility could weaken that momentum.

This reflects a broader tension between accuracy and scalability in climate reporting.

Big Tech Pushback: Apple and Amazon’s Climate Progress

Despite their push for flexibility, both companies have made measurable progress on emissions reduction.

Apple reports that it has reduced its total greenhouse gas emissions by more than 60% compared to 2015 levels, even as revenue grew significantly. The company is targeting carbon neutrality across its entire value chain by 2030. It also reported that supplier renewable energy use helped avoid over 26 million metric tons of CO₂ emissions in 2025 alone.

In addition, about 30% of materials used in Apple products in 2025 were recycled, showing a shift toward circular manufacturing.

Amazon has also set a net-zero target for 2040 under its Climate Pledge. The company is one of the world’s largest corporate buyers of renewable energy and continues to invest heavily in clean power, logistics electrification, and low-carbon infrastructure.

Both companies argue that flexible accounting frameworks have supported these investments at scale.

The Bigger Challenge: Scope 3 and Digital Emissions

The debate over Scope 2 reporting is only part of a larger issue. For most large companies, Scope 3 emissions account for more than 70% of total emissions. These include supply chains, product use, and outsourced services.

In the technology sector, emissions are rising due to:

  • Data centers,
  • Cloud computing, and
  • Artificial intelligence workloads.

Global data centers already consume about 415–460 terawatt-hours (TWh) of electricity per year, equal to roughly 1.5%–2% of global power demand. This figure is expected to increase sharply. The International Energy Agency estimates that data center electricity demand could double by 2030, driven largely by AI.

This creates a major reporting challenge. Even with cleaner electricity, total emissions can rise as digital demand grows.

Climate Reporting Rules Are Tightening Globally

The pushback comes as climate disclosure requirements are expanding and becoming more standardized across major economies. What was once voluntary ESG reporting is steadily shifting toward mandatory, audit-ready climate transparency.

In the European Union, the Corporate Sustainability Reporting Directive (CSRD) is now active. It requires large companies and, later, listed SMEs, to share detailed sustainability data. This data must match the European Sustainability Reporting Standards (ESRS). This includes granular reporting on emissions across Scope 1, 2, and increasingly Scope 3 value chains.

In the United States, the Securities and Exchange Commission (SEC) aims for mandatory climate-related disclosures for public companies. This includes governance, risk exposure, and emissions reporting. However, some parts of the rule face legal and political scrutiny.

The United Kingdom has included climate disclosure through TCFD requirements. Now, it is moving toward ISSB-based global standards to make comparisons easier. Similarly, Canada is progressing with ISSB-aligned mandatory reporting frameworks for large public issuers.

In Asia, momentum is also accelerating. Japan is introducing the Sustainability Standards Board of Japan (SSBJ) rules that match ISSB standards. Meanwhile, China is tightening ESG disclosure rules for listed companies through updates from its securities regulators. Singapore has also mandated climate reporting for listed companies, with phased Scope 3 expansion.

A clear trend is forming across jurisdictions: climate disclosure is aligning with ISSB global standards. There’s a growing focus on assurance, comparability, and transparency in value-chain emissions.

This regulatory tightening raises the bar significantly for corporations. The challenge is clear. Companies must:

  • Align with multiple evolving disclosure regimes,
  • Ensure emissions data is verifiable and auditable, and
  • Expand reporting across complex global supply chains.

Balancing operational growth with compliance is becoming increasingly complex as climate regulation converges and intensifies worldwide.

A Turning Point for Global Carbon Accounting 

The outcome of this debate could shape global carbon accounting standards for years.

If stricter rules are adopted, emissions reporting will become more precise. This could improve transparency and reduce greenwashing risks. However, it may also increase compliance costs and limit flexibility.

If the proposed changes remain optional, companies may continue using current accounting methods. This could support faster clean energy investment, but may leave gaps in reporting accuracy.

The new rules could take effect as early as next year, making this a near-term decision for global companies.

The push by Apple, Amazon, and other companies highlights a key tension in climate strategy. On one side is the need for accurate, real-time emissions reporting. On the other is the need for flexible systems that support large-scale clean energy investment.

As digital infrastructure expands and energy demand rises, how emissions are measured will matter as much as how they are reduced. The next phase of climate action will depend not just on targets—but on the systems used to track them.

The post Apple, Amazon Lead 60+ Firms to Ease Global Carbon Reporting Rules appeared first on Carbon Credits.

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