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Accurate carbon accounting for your entire value chain

Audit-grade data capture for suppliers that your auditors and stakeholders can stand behind.

Capabilities at a glance

Transforming Data into Strategic Action

Collect and Control Your Data

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Guided mapping for all Scope 3 categories
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Centralized evidence vault with version history and approvals
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Full data lineage from report number back to source
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An environmental inventory page

Audit-Ready Calculations You Can Trust

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Global emissions factor library with source, region, and vintage
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PCAF-aligned methods for financed and purchased services
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Data quality scoring and uncertainty tracking

Turn Supplier Data into Supplier Action

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Service-Level Accounting to compare emissions per unit of service
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Side-by-side benchmarking to guide sourcing decisions
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Built-in supplier education and nudges through engage50
A document library page
A dashboard showcasing carbon footprints and analysis

See the Big Picture in Real Time

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Executive dashboards by scope, entity, category, and vendor
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Variance analysis against targets and prior periods
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Drill-downs designed for auditors and ESG teams

Trusted by 100+ procurement leaders and 5,000+ Suppliers across 40+ countries

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Real-Time Visibility Across Scope 1, 2 & 3

How you benefit

Gain a clear, audit-ready view of your emissions footprint with dashboards built for procurement and sustainability teams. Track performance by scope, entity, category, or vendor, measure progress against targets, and drill into transparent, traceable data, all in one place.

We want to hear from you

Get audit-ready carbon reporting with Green Project

Stay compliant, credible, and on track to hit your targets.

Frequently Asked Questions

What is account50 and who is it designed for?
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account50 is Green Project's financial-grade, audit-ready carbon accounting solution within its supply chain decarbonization platform. It enables organizations to collect, validate and report Scope 1, 2, and 3 emissions aligned with leading standards such as the GHG Protocol, CDP, CSRD, and SBTi.

It is designed for sustainability and procurement teams responsible for formal climate reporting, compliance, and third-party assurance across their operations and value chain.

What are the main use cases for account50?
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Organizations use account50 to:


- Build a complete Scope 1, 2, and 3 carbon inventory across their operations and value chain
- Prepare audit-ready data for third-party assurance and regulatory review
- Respond to disclosure requirements such as CDP, SBTi, and EDCI
- Replace spreadsheets and fragmented systems with a centralized, traceable reporting platform
- Manage ongoing emissions tracking across facilities, suppliers, and business units

How does account50 pricing work?
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account50 is offered as an enterprise license tailored to each organization’s needs.

Pricing is based on factors such as Scope 1, 2, and 3 coverage, number of entities or facilities, reporting complexity, data integration requirements (including utility APIs), and assurance or disclosure needs.

Programs may also include dedicated sustainability support and implementation services depending on scope.

What calculation methodology does account50 use?
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account50 uses activity-based greenhouse gas accounting aligned with established global standards. Emissions are calculated using primary data where available, with clear boundary setting, validation checks, and audit trails.


It is aligned with GHG Protocol and supports reporting for CDP and SBTi and others.

Does account50 use spend-based or activity-based data for emissions calculations?
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account50 supports activity-based and primary data wherever available, including energy use, operational activity, and supplier inputs collected through APIs and structured uploads.

The platform maps energy, activity, and expense data to verified emissions factors to calculate Scope 1, 2, and 3 emissions in line with established standards. Where data gaps exist, account50 includes built-in QA controls and estimation tools to support complete and audit-ready reporting.

Is Emitwise the same as account50?
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No. Emitwise is not the same as account50.

Emitwise’s technology now powers Green Project’s supplier engagement solution, engage50, which focuses on collecting and managing supplier emissions data.

account50 is Green Project’s audit-ready carbon accounting solution, designed to calculate, validate, and report Scope 1, 2, and 3 emissions across an organization’s operations and value chain.

Together, engage50 and account50 form part of Green Project’s broader supply chain decarbonization platform.

Which regulatory requirements does account50 support compliance with?
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account50 provides audit-ready emissions data aligned with leading standards including the GHG Protocol, CDP, CSRD, and SBTi. The platform also supports reporting requirements such as EDCI and EcoVadis through pre-loaded GHG exports and configurable reporting tools.

Its standardized Scope 1, 2, and 3 data structure is designed to support disclosure and assurance needs across regulatory and investor-driven frameworks.