Persefoni alternatives for carbon accounting and sustainability reporting

Carbon accounting is now an integral part of sustainability reporting and the drive to carbon neutrality.

Persefoni is a platform designed to help organizations measure emissions, establish baselines across Scopes 1, 2, and 3, and prepare disclosures aligned with regulatory and investor expectations.

Yet, as sustainability programs become more complex, some organizations are looking beyond emissions measurement to systems that also support broader ESG data and multi-framework reporting.

This guide explains how Persefoni is positioned and how other platforms, including Sweep, compare when managing carbon, sustainability data, and reporting at scale.

What Persefoni is and how it works

Persefoni is a carbon footprint and sustainability reporting platform designed to help organizations measure, manage, and report greenhouse gas emissions with a finance-aligned approach.

The software supports sustainability and finance teams by:

• Calculating emissions across Scope 1, 2, and detailed Scope 3 categories using standardized methodologies
• Applying emissions factors and models aligned with the GHG Protocol
• Structuring carbon data for regulatory disclosures and investor reporting
• Maintaining audit trails and controls for emissions data and calculations

For organizations where carbon accounting is the primary focus, Persefoni provides a controlled, consistent foundation for measuring and reporting emissions and enables organizations to build a detailed, defensible view of their carbon footprint. 

When organizations consider alternative approaches

As sustainability programs develop, carbon accounting is often the starting point rather than the full scope. 

Measuring emissions provides a baseline, but organizations also need to manage how sustainability data is collected, validated, and used across the business. That might lead businesses to evaluate platforms that extend beyond emissions calculation.

Expanding beyond carbon accounting

Carbon data is only one part of sustainability reporting. Organizations may need to track additional ESG metrics, manage disclosures across frameworks, and connect emissions data with wider sustainability performance.

Managing data across multiple frameworks

Emissions reporting is typically aligned with carbon standards, while broader ESG reporting involves frameworks such as CSRD, TCFD, CDP and others. This creates a need for systems that can support multiple reporting requirements from a single dataset.

Collecting data across teams and value chains

Scope 3 emissions require input from suppliers and internal stakeholders, but so do many other sustainability metrics. Organizations may look for platforms that support ongoing data collection across multiple functions and external partners.

Connecting calculations with workflows

Carbon accounting platforms focus on measurement and reporting. As requirements grow, organizations may need systems that connect data collection, validation, and reporting through structured workflows.

Scaling sustainability beyond emissions

Sustainability programs increasingly involve operational processes, targets, and performance tracking. This requires systems that support continuous data management, not just emissions calculation and disclosure.

5 Alternatives to Persefoni

As these requirements evolve, organizations may evaluate a range of software and platforms depending on whether their priority is carbon accounting, ESG reporting, or managing sustainability data across the business.

Watershed

Watershed is a climate platform designed to help organizations measure emissions, report on carbon data, and plan decarbonization strategies. 

Beyond emissions measurement, Watershed focuses on helping organizations move toward reduction targets. It combines carbon accounting with tools for supplier engagement, benchmarking, and scenario modeling, allowing teams to identify emissions hotspots and plan decarbonization initiatives.

Best suited for

Organizations with complex Scope 3 emissions and supply chains that need to measure, report, and actively reduce carbon emissions

Key features

• Carbon accounting across Scope 1, 2, and 3 emissions
• Large emissions factor database for detailed footprint calculations
• Supplier engagement tools for tracking value chain emissions
• Scenario modeling and benchmarking for decarbonization planning
• Reporting aligned with regulatory and investor requirements

Considerations

• Focused primarily on carbon and climate rather than full ESG data management
• Broader sustainability workflows and multi-framework reporting may require additional tools
• May be more specialized than needed for organizations focused only on emissions reporting

Normative

Normative is a carbon accounting platform focused on helping organizations measure and understand their emissions footprint. 

The platform emphasizes footprint accuracy and emissions insights. It enables organizations to calculate emissions across suppliers, products, and activities, helping teams identify where emissions are concentrated and where reductions may be needed.

Best suited for

Organizations that need detailed carbon footprint measurement and insights, particularly across Scope 3 emissions

Key features

• Carbon footprint calculations across Scope 1, 2, and detailed Scope 3 categories
• Large emissions factor database for accurate emissions modeling
• Data analysis tools to identify emissions hotspots across the value chain
• Support for emissions reporting aligned with recognized standards
• Tools for tracking and monitoring emissions over time

Considerations

• Focused primarily on emissions measurement rather than broader ESG data management
• Limited support for multi-framework sustainability reporting and workflows
• May require additional tools for cross-functional data collection and operational processes

Sweep

Sweep is a sustainability intelligence platform that brings sustainability reporting into a single system. It is built for enterprises that need to move beyond standalone carbon tools and manage sustainability as an ongoing, structured process across the business.

Instead of focusing only on emissions calculation, Sweep connects carbon accounting with broader ESG data, multi-framework reporting, and cross-functional workflows. This allows teams to collect, validate, and use sustainability data continuously, while maintaining audit-ready records and supporting both carbon and wider reporting requirements.

Best suited for

Organizations that need to manage carbon accounting alongside broader ESG data, workflows, and reporting across multiple teams and frameworks

Key features

• Workflow-driven data collection across finance, operations, procurement, and sustainability teams
• Full Scope 1, 2, and 3 carbon accounting across all categories, including complex value chain emissions
• Multi-framework reporting from a unified data model
• Audit-ready workflows with approvals, validation, and supporting evidence built into day-to-day processes
• Centralized sustainability data platform acting as a single source of truth

Considerations

• Requires internal ownership of sustainability processes to fully benefit from workflow-based capabilities
• May be more comprehensive than needed for organizations focused only on emissions measurement

Plan A

Plan A is a sustainability platform that integrates carbon accounting, ESG data management and decarbonization planning. It is designed to help organizations measure emissions, track sustainability performance, and develop transition strategies to reduce carbon footprint.

Compared to carbon-only tools, Plan A extends into broader ESG reporting and planning. It allows organizations to link emissions data to targets, track progress toward sustainability goals, and support reporting across multiple frameworks.

Best suited for

Organizations looking to manage carbon emissions alongside broader ESG reporting and sustainability planning within a single platform

Key features

• Carbon accounting across Scope 1, 2, and 3 emissions
• ESG data tracking and reporting across multiple frameworks
• Tools for setting targets and tracking sustainability performance
• Decarbonization planning and transition strategy support
• Reporting aligned with regulatory and investor requirements

Considerations

• May not offer the same depth in carbon accounting as specialized platforms
• Workflow capabilities and cross-functional data collection may be less developed than system-based approaches
• May require additional tools for highly complex, enterprise-scale sustainability programs

Workiva

Workiva is an AI-powered platform for data-driven finance, risk and sustainability used by large enterprises to manage financial, ESG, and regulatory disclosures.

The platform is centered around document-based workflows for preparing, reviewing, and publishing disclosures. This allows teams to maintain consistency across reports and ensure that ESG data is aligned with financial and regulatory reporting standards.

Best suited for

Organizations that prioritize structured ESG disclosures and need to align sustainability reporting with financial reporting and governance processes

Key features

• ESG reporting aligned with frameworks such as CSRD, TCFD, and regulatory requirements
• Integrated financial and non-financial reporting within a single platform
• Strong audit trails, version control, and governance workflows
• Collaborative environment for managing reporting processes across teams
• Document and disclosure management for regulatory filings

Considerations

• Primarily focused on reporting and disclosures rather than ongoing data collection workflows
• Carbon accounting capabilities may require integrations or additional tools
• Less suited to managing sustainability data across decentralized teams and continuous processes

Persefoni vs Sweep: A high-level overview

How to choose the right platform

Choosing the right platform depends on whether carbon accounting is the primary requirement or part of a broader sustainability program.

• If your priority is measuring emissions accurately and building a defensible carbon footprint, Persefoni is a strong fit
• If sustainability data needs to extend beyond emissions into ESG reporting and operational workflows, a broader platform may be more suitable
• If Scope 3 emissions are the main challenge, both carbon-focused and system-based platforms can be considered, depending on how data is collected and managed
• If sustainability is owned across multiple teams and requires ongoing data collection and validation, platforms designed for cross-functional workflows become important
• If you are looking to connect carbon accounting, ESG data, and reporting within a single system, an integrated sustainability platform may better support long-term scalability

From carbon accounting to full sustainability management

Carbon accounting is a critical starting point for sustainability programs, but it is rarely the endpoint. As organizations move from measurement to management, the scope of what needs to be tracked and reported continues to expand.

Platforms like Persefoni provide a strong foundation for measuring and reporting emissions. For organizations looking to connect carbon data with broader ESG reporting, workflows, and operational processes, a more integrated approach becomes increasingly important.

Sweep supports this transition by connecting carbon accounting, ESG data, and reporting within a single system, helping organizations manage sustainability as an ongoing process across the business.

Ready to see how Sweep can help you on your sustainability journey? Book a demo today.