In the nascent era of corporate climate action, carbon mitigation was more tangible and distinctly analogue, as businesses aiming to neutralise emissions would fund projects that planted trees.

However, as intensifying global climate pressures demand greater corporate accountability, this traditional forestation model is no longer enough. Forestation projects take decades to mature, are difficult to audit in real-time, and are increasingly vulnerable to wildfires and poor oversight.

As the world increasingly explores innovative options beyond analogue carbon offsetting, a new phase in carbon avoidance is emerging in the form of digitally traceable, tokenised carbon credits. 

This tech-led advancement leverages real-time data through application programme interfaces (APIs) and blockchain technology to transform how businesses mitigate their environmental impact.

From Tree to Digital Ledger

“As automation continues to transform every sphere of business, tokenising verified carbon-avoidance data into legitimate carbon credits via an established methodology is beginning to gain traction,” affirms Dr Wiehann Olivier, Partner and Global Co-Head of Digital Assets at Forvis Mazars. 

“Early opportunities are already emerging in South Africa, with comparable activity seen in markets such as Uruguay, Brazil and Australia.”

At its core, the transition to tokenised carbon credits is about moving from historical offsets to real-time, auditable mitigation. 

“Rather than only waiting for trees to grow, businesses can now verify and trade the carbon actively avoided by operational renewable energy projects.”

Bongiwe Mbunge, Lead Sustainability Partner for Forvis Mazars Africa Region, elaborates that, in the past, businesses implementing decarbonisation strategies would calculate their total emissions and convert that into a set number of trees. 

"Today, the levers available to affect climate change have evolved as we move from physical forestation to the tokenisation of carbon credits as blockchain-based digital assets.” 

According to Mbunge, tokenised carbon credits offer traceable avoidance, allowing businesses to leverage downstream projects in the value chain that other providers have developed or implemented to boost integrity within their own value chain.

“By shifting the focus to carbon avoidance, companies are unlocking immediate, quantifiable environmental outcomes.” 

From Sunlight to Smart Contracts

However, capturing this data requires a sophisticated digital pipeline. For example, the journey from solar generation to a tradable digital token that also serves a utilitarian purpose in carbon offsetting requires interconnected technologies. 

“By bridging physical hardware, cloud software, and cryptographic security into a single automated pipeline, we can convert the clean electricity generated from photovoltaic (PV) solar panels that replaces fossil-fuel grid power into verified avoidance metrics,” explains Dr Olivier. 

When sunlight hits solar panels, modern inverters equipped with APIs generate electricity and measure the exact kilowatt-hours produced in real-time. This data is translated into carbon-avoidance metrics, which are then converted into legitimate carbon credits by applying the established methodology.

“These verified carbon avoidance metrics are then converted into carbon credits and minted as digital tokens on a blockchain, creating an immutable, tradeable representation of a real-world carbon credit,” continues Dr Olivier.

This degree of automation eliminates the administrative lag that has long plagued carbon markets.

"Once the methodology and infrastructure are established, the process can be automated. The system could be configured to mint and distribute carbon credits periodically, potentially even daily, depending on the methodology and controls in place. These can then be sold to high-emitters to offset their carbon footprint in secondary markets."

Solving the Trust and Valuation Gaps

For business decision-makers, tokenisation is not merely a technology trend; it is a highly practical solution to two of the voluntary carbon market's biggest headaches: double-spending and valuation uncertainty.

Dr Olivier explains that, because public blockchains are transparent and immutable, once a carbon token is "retired" or used to offset an emission, it is permanently deactivated. 

“Their immutable nature means that the full value chain can be traced on-chain, from the underlying carbon-avoidance activity and credit creation through every transfer of ownership to final retirement, providing a transparent and auditable record throughout the asset's lifecycle,” he elaborates.

“This can materially reduce the risk of ‘phantom credits’ or the same offset being sold to multiple buyers (double spending), provided the underlying methodology, controls and assurance processes are sound.”

Furthermore, tokenisation introduces liquidity to an historically opaque market.

"The ability to carry carbon credits at value on a company’s balance sheet has historically been a challenge for CFOs due to asset valuations," states Mbunge. 

However, tokenising carbon credits could support a more observable market-based valuation, potentially moving the asset closer to an International Financial Reporting Standards (IFRS) 13 Level 1-type valuation if an active market exists. 

“This makes it easier to measure fair value based on open-market trading. It turns carbon from an ambiguous accounting entry into a highly liquid, easily valued asset," adds Dr Olivier.

Navigating the South African Regulatory Frontier

While the technological framework is ready, the regulatory landscape is still catching up. 

Mbunge highlights how local companies looking to innovate in this space must navigate several evolving compliance requirements.

“While the Greenhouse Gas Protocol has finalised standards for Scopes 1, 2, and 3, Scope 4, which covers carbon avoidance, is still an emerging global framework,” she explains.

“However, as the Greenhouse Gas Protocol establishes a baseline in terms of CO2 measurements, the protocol remains the same, whether it is applied in Africa, Europe or the US.”

South Africa’s International Sustainability Standards Board (ISSB) implementation roadmap is another key consideration, with mandatory environmental, social and governance (ESG)-related reporting expected to be phased in for listed entities and larger private companies if proposed changes are adopted.

“Compliance with the ISSB standards may make ESG reporting mandatory for listed and larger private entities in a phased rollout,” continues Mbunge. 

“As such, the Department of Trade, Industry and Competition (DTIC) is actively facilitating workstreams between the public and private sectors, while the Companies and Intellectual Property Commission (CIPC) will work to amend the Companies Act to reflect these requirements, once consensus is reached.” 

The prospect of this reporting mandate has already triggered a response from some business leaders, who are starting to transition from certain sustainability reporting frameworks to more closely align with the ISSB standards in terms of IFRS.

Furthermore, as the EU’s Carbon Border Adjustment Mechanism (CBAM) takes effect, verified carbon data and credible sustainability evidence are likely to become increasingly important for South African exporters looking to prove their low-carbon credentials to European markets.

Beyond the reporting standards, businesses will also need to navigate additional complexity due to digital asset regulations. 

“Currently, the Financial Sector Conduct Authority (FSCA) regulates the digital asset service providers responsible for tokenisation under the Crypto Asset Service Provider (CASP) licensing framework,” continues Dr Olivier. 

“Tokenised carbon credits will likely fall under this regime when they are issued by a CASP.”

Additional complexities emerge due to exchange control regulations that govern cross-border transactions. 

"A major question is: does exporting a tokenised carbon credit, generated in South Africa, to an international buyer constitute the externalisation of an asset under SARB rules, and will this be considered by the new draft Capital Flow Management Regulations? This is a critical legal frontier we are exploring."

The Credibility Bridge: Assurance in a Digital Age

As these digital assets cross the boundary between sustainability and complex fintech, they require a new breed of validator. 

Innovators need to prove their tokens are backed by legitimate carbon avoidance, and buyers need absolute certainty that they are purchasing legitimate, uncompromised carbon credits. This is where the traditional role of an auditor meets the frontier of digital finance.

"To make this ecosystem work, we need to bridge the gap between traditional ESG credibility and digital asset and blockchain technology," says Mbunge. 

"An audit partner’s role will be to act as that independent validator, conducting pre-assurance and full assurance on the entire supply chain, from the sun hitting the solar PV panel to the token landing on the ledger. It is about providing credibility to the innovator and protection to the user."

Mbunge cautions, however, that carbon avoidance remains only one part of the climate response. 

“While tokenised avoidance can support mitigation, companies still need to address climate adaptation and business resilience, particularly in the global south.”

As the corporate world faces unprecedented pressure to transition from promise to proof, the shift from forestation to tokenisation offers a transparent, auditable, and practical way forward. 

For businesses ready to take a first-mover approach to these evolving climate response measures and regulatory requirements, the message is clear: the future of sustainability is increasingly shifting from forestation to tokenisation.