SBTi CNZS v2.0: Corporate Net-Zero is Being Re-Engineered

Durable Carbon Removal moves from footnote to framework

The draft update to the Science Based Targets initiative (SBTi) Corporate Net-Zero Standard (CNZS v2.0) introduces a systemic shift in global corporate climate accountability. Unlike earlier standards that primarily emphasized long-term decarbonization intentions, this revised draft embeds durable carbon-removal responsibilities throughout transition periods — challenging companies to manage their residual emissions as active liabilities, not deferred promises. This represents a deeper integration of removal mechanisms into the actual pathway toward science-aligned net-zero outcomes and aligns climate responsibility with operational timelines and board-level decision cycles.

The Previous Model: Deferred Neutralization, Weak Market Signals

Under the original Corporate Net-Zero Standard (V1.x), SBTi emphasized internal value-chain decarbonization (Scopes 1–3), but the role of external carbon credits — including carbon-removal credits — was relegated to voluntary contributions known as “Beyond Value Chain Mitigation.” These credits supported broader climate goals but did not allow companies to claim target alignment or performance progress. This structure resulted in a climate-finance model where removal credits were financially supported only by companies voluntarily exceeding compliance requirements, and only at the final net-zero year could removal claims be used toward official neutralization of unavoidable emissions. Since this neutralization moment was often scheduled decades in the future, there was little urgency for corporates to invest in removal supply earlier in their journey — leaving the market for durable removals significantly underdeveloped and largely unfunded.

CNZS v2.0: A System Built for Action During the Transition

The draft version of CNZS v2.0 shifts from a deferred responsibility model to one of active accountability, establishing enforceable structural features that reshape corporate behavior:

• Ongoing Emissions Responsibility (OER)

Companies must now declare and act on their current emissions exposure, demonstrating mitigation and/or removal activities within each reporting period. This elevates residual emissions from an abstract future concern into a current operational risk, monitored and managed alongside core decarbonization progress.

• Interim Removal Benchmarking

Removals are expected to scale progressively over time, not remain dormant until the net-zero end-state. By requiring measurable advancement toward neutralization, the framework creates uninterrupted market activity, allowing supply and procurement contracts for carbon-removal credits to evolve steadily — encouraging early investment and technology learning curves.

• Durability Thresholds

In order to count toward neutralization of residual emissions, only “long-lived” carbon-removal solutions — those capable of stable storage with high confidence — are eligible. By distinguishing permanent reservoirs from temporary sinks, the standard actively funnels finance toward durable removal pathways such as biochar, DAC, and mineralization methods recognized for extended retention of sequestered carbon.

• No Substitution Principle

Removals cannot replace emissions-reduction obligations; they operate as a complementary instrument. This dual-track approach ensures that the global carbon budget tightens in two directions simultaneously: lowering emissions and eliminating atmospheric carbon stock.

Together, these requirements shift removal credits into a compliance-aligned instrument class, fundamentally changing how climate finance flows.

Technical Compliance Under CNZS v2.0

Under this revised construct, companies are expected to uphold a robust suite of measurement, reporting, and verification obligations, including:

• Comprehensive Scope 1–3 emissions accounting to establish precise baselines and ongoing reductions
• Removal-credit utilization transparency that aligns issuance and retirement cycles with corporate emissions timelines
• Independent verification structures that validate additionality, permanence, and credit-quality
• Clear chain-of-custody registry systems ensuring environmental attribute integrity
• Regular reporting cycles demonstrating progress toward both near-term reduction and ongoing neutralization targets

These requirements raise the integrity bar for eligible removal credits, filtering out low-quality offsets and ensuring that only evidence-based climate benefit can be recognized toward net-zero claims.

Corporate Realignment: From ESG Marketing to Operational Risk Management

Major companies — including Nasdaq — now characterize climate accountability as a corporate governance priority rather than an optional brand posture. Their messaging indicates that sustainability drives access to capital, supply-chain continuity, and market reputation, affecting procurement eligibility and competitive positioning. This signals a transition from climate commitments serving as values-based attributes to functioning as business requirements, with transparency and measurable resilience embedded into corporate strategy.

Corporates increasingly recognize that the cost of climate inaction is rising faster than the cost of climate integrity.