Best Carbon Accounting Software 2025: Top 10 Platforms Compared

Carbon accounting is key to tracking and reducing your organization's greenhouse gas (GHG) emissions and carbon footprint. By incorporating this into your business, you can meet your sustainability goals and comply with changing regulations.

This is a guide to the top carbon accounting software of 2025 and how it can help you manage your emissions.

🎯 New: Use our interactive Carbon Accounting Software Comparison Tool to find your perfect match with ROI calculator and real pricing data.

Key Points

• Carbon accounting measures and reports greenhouse gas emissions to comply with regulations and improve brand reputation.
• Carbon accounting software simplifies the entire carbon reporting process and helps organizations get to net-zero CO2 emissions by identifying hotspots.
• Features of a good software include data collection efficiency, compliance support, advanced analytics and real-time monitoring for better emissions tracking.

Quick Comparison of All 10 Tools

Before we dive in, here's a quick summary of all 10 carbon accounting tools for 2025:

• Salesforce Net Zero Cloud - Enterprise ($4,000/mo) - Best for large companies
• IBM Envizi - Fortune 500 (Custom) - Most comprehensive ESG suite
• Microsoft Cloud for Sustainability - SMB/Mid-market ($4,200/mo) - Best for Microsoft users
• Sphera - Industrial (Custom) - Best for manufacturing
• Cero.earth - All sizes ($500+/mo) - Fastest implementation
• Persefoni - Financial sector ($50K/yr) - Best for PE firms
• Watershed - Tech companies ($10K/yr) - Best API integration
• Plan A - EU companies (€800/mo) - Best for CSRD compliance
• Greenly - Startups ($299/mo) - Most affordable
• Normative - SBTi focus (€500/mo) - Best for science-based targets

→ Compare all vendors side-by-side with our interactive tool

What is Carbon Accounting

Carbon accounting is the detailed process of measuring and managing an organization's GHG emissions and overall environmental impact. If you want to quantify your emissions and develop reduction strategies you need to do this.

Accurate emissions tracking allows companies to focus reduction efforts on areas that have the biggest impact so their sustainability initiatives are more meaningful and effective.

Compliance with emissions regulations is part of carbon accounting. This helps a business avoid fines and penalties, shows its commitment to environmental responsibility and upholds brand reputation.

Transparent emissions reporting can attract environmentally conscious customers and stakeholders and improve your market position. The Greenhouse Gas Protocol is a commonly used framework for calculating and categorising GHG emissions and different methodologies can be used depending on the organisation.

But regular audits and third-party verifications are key to maintaining data quality and accuracy in carbon accounting.

The best carbon accounting helps identify reduction opportunities and aligns with broader sustainability goals so it's a key part of any corporate sustainability strategy.

The KnowESG Marketplace offers a range of carbon accounting software for businesses to align with frameworks such as the Greenhouse Gas Protocol.

These frameworks ensure consistency and comparability in emissions reporting so it's easier for companies to meet their sustainability goals.

Benefits of Carbon Accounting Software

Carbon accounting solutions or software can transform how organisations manage their carbon emissions and sustainability goals. They help them collect accurate carbon data, reduce energy emissions and simplify the reporting process.

By monitoring emissions and identifying hotspots you can develop carbon reduction strategies tailored to your business. Our website makes this easy by having all the information at your fingertips.

One of the benefits of carbon accounting software is that it can provide the data to help companies on their path to net-zero emissions. More importantly, transparency in your business averts greenwashing and builds trust with stakeholders.

edenseven, a sustainability consultancy and carbon management platform provider, is an example of how detailed emissions analysis combined with industry-leading technical knowledge can deliver significant quantifiable environmental and financial benefits to a clients Net Zero Program.

With their platform cero.earth, edenseven provides carbon accounting, actionable insights, project tracking and detailed reporting to help organisations meet their sustainability goals.

Also, carbon accounting software future-proofs businesses by aligning with the growing investor and consumer demand for sustainability.

Organisations reducing their carbon footprint will attract environmentally conscious employees, firm up relationships with customers and other stakeholders and ultimately support long-term business success.

Features of Good Carbon Accounting Software

The best carbon accounting software has many features that make it more functional and user-friendly. First, these platforms simplify the data collection process with interfaces that ensure data hygiene and collect data from multiple sources.

This is key to the integrity of the carbon accounting process and the accuracy of emissions tracking.

Compliance support is another essential feature as the software should be able to comply with various international and regional carbon reporting regulations. Advanced analytics offer dashboards to track emissions over time and analyze trends to inform decarbonization planning and emissions reduction.

Ability to generate multiple types of reports, including ready-to-publish PDFs and raw CSV files, supports full GHG emissions disclosure.

Real-time monitoring builds on data collection and reporting, making these platforms must-haves for carbon management.

Top Carbon Accounting Software 2025

As carbon accounting becomes more important, several platforms have emerged. Net Zero Cloud, IBM Envizi, Sphera, and Microsoft Cloud for Sustainability are the top carbon accounting software with full toolsets to measure, manage and report carbon emissions.

All listed companies provide relevant emissions data which is actionable insights to support your sustainability efforts and help you set and achieve emissions reduction targets.

Net Zero Cloud by Salesforce

A carbon accounting and sustainability management platform, Net Zero Cloud helps organizations track and reduce their carbon emissions.

It uses its cloud-driven infrastructure to share reporting and data analytics capabilities. Organizations can achieve three core goals through its platform and they are as follows:

• Measure carbon footprint for Scope 1, 2 and 3 emissions
• Set targets based on science
• Monitor progress towards sustainability goals.

IBM Envizi

Envizi is an emissions and sustainability management platform acquired by IBM recently. Through it, companies can capture, manage and monitor emissions data.

It allows organizations to aggregate and integrate data from multiple sources including waste generation, energy consumption and emissions from transportation.

It also has features for carbon accounting and environmental management from a broader perspective.

Sphera

An entity owned by the Blackstone Group, Sphera is known for its ESG and risk management services.

The software platform aims to integrate emissions reporting and data management, to merge safety and sustainability management across multiple companies.

The platform also has core features like life cycle assessment and regulatory compliance tracking.

Microsoft Cloud for Sustainability

Microsoft Cloud for Sustainability is designed for mid-market and SMB organizations to accelerate their sustainability initiatives through centralized data management.

The platform offers automation, language support, integration features and emissions reporting to simplify the reporting process. In addition to its data management capabilities, Microsoft Cloud for Sustainability reports emissions and sustainability metrics so you can set and achieve your sustainability targets.

Cero.earth

Cero.earth is a carbon accounting and management platform that accelerates users' decarbonization programs with its dynamic project assessment and scenario testing tools.

Cero.earth is industry and region agnostic, supports compliance needs, builds credibility for business growth, identifies quantifiable cost savings and reduces the effort to manage net-zero programs across the organization.

Other Top Platforms 2025

Beyond the five above, several other solutions have emerged as leaders in specific niches and use cases:

Persefoni

Persefoni is the go-to platform for financial institutions and private equity firms. Built for the financial sector, it excels at calculating financed emissions (Scope 3, Category 15) with PCAF-aligned methodologies.

The platform has automated SEC climate disclosure workflows and sophisticated scenario analysis tools for climate-related financial risk assessment. Priced at $50,000 per year, it's for serious financial institutions managing portfolio-wide emissions.

Watershed

Watershed is the preferred choice for technology companies. It offers developer-friendly APIs, webhooks and real-time data streaming that tech teams love.

Beyond its technical sophistication, Watershed has excellent educational resources and customer success support. The integrated carbon removal marketplace connects buyers with vetted removal projects. Priced at $10,000 per year, it's for growing tech companies.

Plan A

Plan A emerged from the European market with deep expertise in EU regulations, particularly the Corporate Sustainability Reporting Directive (CSRD). The platform handles double materiality assessments and EU Taxonomy alignment that many US-based platforms overlook.

With multi-language support and region-specific emission factors, Plan A is for European companies facing 2024-2025 CSRD deadlines. Priced at €800 per month, it's good value for EU compliance needs.

Greenly

Greenly democratizes carbon accounting for small businesses and startups with pricing starting at $299 per month. The platform uses spend-based methodology, so companies can calculate emissions using existing financial data.

Despite its simplicity, Greenly has carbon coach support even at entry-level pricing, helping small teams navigate emissions reporting complexity. It's the perfect starting point for SMBs beginning their sustainability journey.

Normative

Normative built its platform around Science-Based Targets initiative (SBTi) methodology, so it's perfect for companies serious about climate action. The platform's automated Scope 3 calculations use advanced modeling to estimate supply chain emissions when supplier data isn't available.

With peer benchmarking features and reduction pathway modeling, Normative helps organizations know exactly what changes are needed to meet SBTi-aligned targets. Priced at €500 per month.

💡 Not sure which platform is right for you? Calculate your ROI with our interactive tool to see potential savings and payback period.

How to Choose the Right Carbon Accounting Software for Your Business

Choosing the right carbon accounting software is a big decision for businesses looking to reduce their carbon footprint and align with sustainability goals. With so many options out there, making the right choice requires careful consideration of key features and long-term business needs.

Here are what to look for in carbon accounting software.

Accurate Carbon Emissions Measurement

A good tool should give you precise data on your carbon emissions so you can track progress towards your sustainability goals. Accurate data means you can see where your biggest emissions are and focus on what matters most.

Compliance with Regulations

Staying up-to-date with international and regional regulations is key to avoiding penalties. Software that aligns with recognized standards like the Greenhouse Gas Protocol means compliance and credibility with stakeholders.

Integration with Multiple Data Sources

Effective carbon management requires a platform that can pull data from various sources, such as energy use, supply chains and transportation. Integration makes reporting easier and more efficient.

Scalability and Flexibility

As your business grows and sustainability initiatives evolve, your carbon accounting software must adapt to new challenges. Scalable platforms can handle more data and more reporting as regulations and corporate goals change.

Flexibility is just as important. Software that can accommodate different business models, industries and operational structures means it will remain relevant no matter how your carbon management needs change.

Support and Usability

The level of support from software providers can make a big difference to your success. During setup and ongoing use, responsive and knowledgeable support can reduce downtime and make sure you're using all the platform's features.

And user-friendly interfaces means teams across your organization can engage with carbon accounting processes.

Aligning with Standards

Choosing a platform that aligns with globally recognized standards means businesses can maintain consistency and transparency in their carbon emissions reporting. This reduces risks such as non-compliance penalties and reputational damage.

Making a Decision

To avoid mistakes and get the most out of carbon accounting software, research thoroughly and compare solutions.

Check out KnowESG Marketplace today to find the right software for managing your carbon emissions, energy consumption and sustainability goals.

The Future of Carbon Accounting

The future of carbon accounting is driven by increasing regulation and transparency of emissions.

As companies face stricter environmental regulations, carbon accounting will become even more important. Our Marketplace has tools that address these demands and emissions management.

Technology and data collection methods will evolve, making carbon accounting more efficient and accurate.

AI-powered carbon measurement tools and real-time emissions tracking will be key to these improvements.

As companies prioritize sustainability, the integration of advanced carbon accounting tools will play a bigger role in setting and achieving emissions reduction targets.

These tools will help organizations get to net zero and stay competitive in a more eco-conscious market.

The Bottom Line

As we move into a more sustainable era, adopting advanced carbon accounting software is crucial for businesses to stay competitive and responsible.

These tools go beyond compliance; they enable organizations to measure their carbon emissions, track their carbon footprint and optimize energy consumption for long-term efficiency.

Take the next step towards a greener future. Explore the KnowESG Marketplace to find the right tools for managing your carbon emissions and growth.

🚀 Ready to get started? Use our interactive comparison tool to find your perfect carbon accounting software match with real pricing, ROI calculator, and decision guidance.

FAQs

What is carbon accounting?

Carbon accounting is key to understanding and managing an organization's greenhouse gas emissions and environmental impact more effectively and in detail. By using carbon accounting software to track emissions, businesses can develop strategies to reduce emissions.

Why is carbon accounting important for businesses?

Carbon accounting is important for all companies. It measures greenhouse gas emissions, organizations' carbon emissions, meets regulations and improves brand image. This promotes sustainability and builds trust with customers, encouraging stronger climate actions.

How do carbon accounting tools help in reducing carbon emissions?

Carbon accounting software reduces emissions by collecting data and identifying emission hotspots, allowing organizations to apply reduction strategies.

What are the key features of carbon accounting software?

The best carbon accounting software should have data collection, compliance support, data quality controls, advanced analytics and reporting capabilities. These features ensure accurate tracking and management of carbon emissions.

What to look for?

Assess your needs, standards and scalability and integration.