The Science Based Targets initiative (SBTi) Corporate Net-Zero Standard (CNZS) is the globally recognized gold standard for corporate climate action. The release of the CNZS Version 2 (V2) consultation draft marks a major evolution in corporate decarbonization: one that prioritizes rigor, accountability, and real world emissions reductions.

Version 2 builds on the foundation of the initial standard (V1.2/V1.3) but introduces structural changes across all scopes of emissions, formalizing stronger mechanisms to accelerate action and ensure corporate claims are credible and verifiable.

Below is a breakdown of the most important updates, including what they mean in practice, plus where DitchCarbon can help companies future proof their approach.

Key Differences Between CNZS V2 and V1

The Shift in Focus: From Goal Setting to Delivery

1. Decarbonization Integrity

The most significant pivot is toward real world emissions reduction. V2's requirement for separate Scope 1 and Scope 2 targets, combined with stricter electricity sourcing criteria, ensures companies cannot depend on certificates alone to claim progress. Instead, they must reduce actual emissions in their operations and energy supply.

2. Target Effectiveness in Scope 3

By shifting from percentage based thresholds to an impact based mapping, V2 ensures companies prioritize the most material and influenceable parts of their value chain.

This approach better reflects each company's operational reality and emphasizes high leverage supplier engagement.

3. Ongoing Emissions Responsibility (OER) + Tier Checking

V2 replaces voluntary BVCM with a structured OER framework. Companies must take responsibility for ongoing emissions (those not yet abated prior to the net zero year). OER includes:

Two Recognition Tiers

• Recognized Tier: Demonstrates minimum credible climate contribution aligned with SBTi principles.
• Leadership Tier: Reflects stronger, more ambitious contributions to mitigation outside the value chain.

Tier Checking

V2 introduces formal tier checking requirements, ensuring:

• Contributions meet minimum eligibility rules
• Climate finance mechanisms are credible
• Claims are only made if verified against the SBTi tier criteria
• Companies cannot overstate their climate finance impact

This prevents misuse of voluntary carbon markets and strengthens the credibility of corporate claims.

4. Accountability and Assurance

Mandatory transition plans, cyclical reviews, and assurance requirements strengthen transparency and reduce the risk of "paper only" progress.

How DitchCarbon Helps Companies Navigate CNZS V2

The tightening of CNZS V2 introduces new operational and analytical burdens, especially in Scope 3 mapping, supplier engagement, electricity sourcing integrity, and OER tier verification. DitchCarbon directly supports companies in these areas.

1. Accurate Scope 3 Emissions Mapping (Impact Based, Category Level)

CNZS V2 requires companies to determine which Scope 3 categories exceed 5% and therefore must be included in targets.

DitchCarbon helps by:

• Providing granular emissions estimates for suppliers, products, and spend data
• Identifying high impact suppliers and categories with automated scoring
• Flagging emissions intensive activities that fall under "relevant sources"
• Producing Scope 3 prioritization models aligned with SBTi's impact based boundary approach

This dramatically accelerates the transition from V1 style percentage coverage to V2's impact driven requirements.

2. Supplier Engagement Targets and Alignment Tracking

V2 deepens emphasis on Alignment Targets. DitchCarbon enables:

• Automated assessment of supplier climate maturity
• Identification of suppliers lacking targets
• Tracking of supplier SBTi alignment status
• Communication workflows to help suppliers improve

This ensures companies can meet SBTi's strengthened supplier engagement thresholds.

3. Scope 2 Decarbonization Support

V2's move toward geographic and eventually temporal matching requires more precision.

DitchCarbon helps by:

• Mapping electricity grid carbon intensity for regions and suppliers
• Highlighting suppliers using low carbon electricity
• Identifying procurement hotspots where companies need to switch to real clean power contracts

4. OER Tier Checking and Climate Finance Support

The new Ongoing Emissions Responsibility (OER) framework introduces strict requirements around:

• Appropriate contribution mechanisms
• Quantification of residual emissions
• Validation against tier criteria

DitchCarbon supports tier checking by:

• Quantifying ongoing emissions that need OER coverage
• Mapping possible mitigation investments to SBTi OER eligibility
• Flagging contribution gaps for Recognized and Leadership tiers
• Providing dashboards showing alignment progress for audits and SBTi validation

5. Transition Plan Readiness

CNZS V2 requires companies to publish a transition plan.

DitchCarbon provides:

• Decarbonization pathway modeling
• Supplier risk analytics
• Actionable reduction recommendations
• Data needed to build SBTi compliant transition plan disclosures

Conclusion: V2 Is a New Era of Corporate Climate Responsibility

The CNZS V2 draft is not just an incremental update: it is a reframing of the entire net zero journey. The standard shifts from goal setting to delivery, emphasizing:

• Real emissions reduction
• Impact based Scope 3 action
• Credible ongoing emissions responsibility via tier checking
• Robust accountability through validation and assurance
• Transparent transition planning

Companies should begin preparing now. Tools like DitchCarbon make it possible to meet V2's heightened expectations with reliable data, supplier insights, and automated alignment tracking, turning compliance into a strategic advantage.

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