By GreenProgress · Platform information reviewed: October 28, 2026 · Orki added and regulatory references revised: October 30, 2026
Carbon accounting software is no longer optional. For companies operating in the US, UK, Canada, Europe, Australia and America; measuring and reporting greenhouse gas emissions is now a strategic, regulatory, and financial priority.
The right carbon accounting software does far more than calculate emissions. It enables:
- Scope 1, 2, and 3 tracking
- Regulatory compliance (CSRD, SEC, SBTi, PCAF)
- Audit-ready carbon reporting
- Supplier engagement and value chain modeling
- Enterprise-grade emissions management
But not all carbon management software is built the same. Pricing, depth of Scope 3 modeling, industry specialization, and enterprise integrations vary dramatically.
Carbon Accounting Software Pricing: Quick Comparison
The table below describes the pricing information available in the sources reviewed. “Request a quote” means that this review does not establish a standard annual subscription price; it does not mean the platform is necessarily expensive.
| Platform | Pricing evidence | What to investigate | Main purchasing question |
|---|---|---|---|
| Persefoni | Pro is offered free; Advanced requires a sales discussion | Differences between self-service inventory work and advanced workflows | Can Pro meet the required workflow, or are additional services needed? |
| Watershed | No standard subscription fee identified on the reviewed public site | Measurement, disclosure workflows and decarbonization planning | What entities, data workflows and services does the proposal include? |
| Greenly | The reviewed pricing page directs buyers to contact the vendor | GHG assessment, LCA and ESG offerings | Which product, support and deliverables are included in the proposal? |
| Normative | Essential and Premium packages request a quote | Accounting support, value-chain engagement and reduction planning | Which package includes the supplier and advisory work required? |
| Plan A | Essential, Pro and Enterprise offerings; no universal fee established here | Reporting, API access and expert services by package | Which services and integrations cost extra? |
| Orki | Vendor-supplied starting prices: €1,440 Compliance, €1,800 In-depth assessment and €3,500 Reduction strategy; billing basis not confirmed | Corporate footprint packages with engineering support; separately quoted LCA and ESG work | Is the price per assessment or subscription, and what does it include? |
| IBM Envizi | Pricing configuration based on data needs and functionality | Account bundles, locations and selected modules | How does the proposed configuration change as data volume grows? |
| Salesforce Net Zero Cloud | The reviewed US pricing page requests contact; regional pages may display edition prices | Edition, region, add-ons and integration requirements | What is the complete annual cost of the proposed configuration? |
Sources: Persefoni pricing, Watershed, Greenly pricing, Normative pricing, Plan A offerings, IBM Envizi pricing and Salesforce US pricing.
Carbon Accounting Software vs Carbon Reporting Software
While often used interchangeably:
- Carbon accounting software calculates and manages emissions data.
- Carbon reporting software focuses on disclosure and compliance output.
Modern enterprise solutions combine both into an integrated carbon management system.
Carbon Accounting vs Lifecycle Assessment (LCA)
Corporate carbon accounting measures emissions at the company level.
Lifecycle assessment (LCA) evaluates the environmental footprint of a specific product from raw material to end-of-life.
Some specialized platforms integrate both approaches, especially in food, fashion, and manufacturing industries.
Why Carbon Accounting Software Is Now Business-Critical
Fas become a core business infrastructure investment, not just a sustainability initiative.
Regulatory Pressure
Organizations face increasing disclosure requirements, including:
- CSRD (Europe)
- SEC climate disclosure rules (US)
- SBTi target validation
- PCAF standards for financial institutions
Without structured carbon accounting software, compliance becomes high risk and resource intensive.
Investor and Supply Chain Demands
Investors increasingly require granular, auditable emissions data.
Large enterprises now require suppliers to disclose Scope 3 emissions as part of procurement processes.
Carbon accounting software enables companies to:
- Maintain audit-ready carbon data
- Improve tender eligibility
- Strengthen ESG reporting credibility
Financial Impact: Revenue, Cost & Risk
Companies using enterprise carbon accounting software can:
- Improve eligibility for ESG-sensitive contracts
- Reduce operational costs through emissions optimization
- Avoid greenwashing risk
- Mitigate supply chain climate exposure
For many businesses, carbon management software directly impacts revenue and risk mitigation.
What Does Carbon Accounting Software Cost?
Start with the distinction between a license price and the cost of producing a usable inventory.
For procurement, separate prices into four evidence categories:
| Price category | Meaning | How to use it |
|---|---|---|
| Official published price | A vendor lists a price for a named product, edition and region | Record the billing basis, included features, exclusions and review date |
| Vendor-supplied indicative price | The vendor provides a starting figure directly, without a fully specified comparable offer | Attribute the figure, confirm its billing basis and obtain a written scope |
| Custom quote | The vendor prices a defined customer configuration | Compare it against proposals with the same requirements |
| External estimate | A third party reports or estimates costs | Use as context only after checking the sample, date and scope |
The value of a pricing comparison is identifying what can be verified and what must be quoted, rather than filling every cell with an unsupported number.
This guide does not publish a universal annual price band for small, medium or large businesses because the reviewed evidence does not support a consistent like-for-like range.
Why employee count is not enough
A small importer with a complex supplier network may need more extensive value-chain data than a much larger office-based organization.
Before asking for prices, define:
- Legal entities and facilities.
- Countries and reporting periods.
- Material emissions sources.
- Available data and required integrations.
- Reporting outputs and review requirements.
- Internal users and external contributors.
- Advisory support and implementation needs.
Headcount can help describe a buyer. It should not replace a requirements assessment.
Platform Pricing and Purchasing Considerations
Persefoni: evaluate the free plan against your workflow
Persefoni offers a free Pro plan and an Advanced offering. Its reviewed public comparison lists Scope 1, 2 and 3 calculations, including all 15 Scope 3 categories, for Pro.
It would therefore be misleading to describe the free product simply as Scope 1 and 2 tracking.
The purchasing question is whether the available workflow matches your needs. Confirm user access, reporting outputs, calculation granularity, support and any separately priced services.
Organizations needing more extensive program management should compare those requirements with Advanced rather than assuming that emissions coverage alone determines suitability.
Source: Persefoni plan comparison.
Watershed: scope the full sustainability program
Watershed presents measurement, reporting and action capabilities, including data lineage, review workflows and forecasting.
Its reviewed public site directs buyers to request a demo; this review did not identify a standard subscription fee.
It is a candidate to investigate when procurement extends beyond an annual inventory into coordinated reporting and decarbonization work. That is an editorial fit assessment based on its documented offering, not a tested ranking.
Ask for a proposal listing entities, integrations, reporting workflows and advisory services. Confirm which features are operational in the quoted configuration and which require additional services.
No universal annual price range is assigned here.
Greenly: define the product and deliverables first
Greenly’s reviewed pricing page distinguishes GHG assessment, LCA and ESG offerings and directs buyers to contact the company for detailed rates.
This review does not establish a universal entry price for its corporate carbon accounting service.
Ask for a proposal identifying the inventory boundary, reporting period, required data, advisory support, deliverables and renewal terms.
If you need product assessments as well as a corporate inventory, clarify whether they are separate products or included in a bundle. Confirm how the quoted price changes when adding entities, assessments or reporting requirements.
Source: Greenly pricing and solutions.
Normative: compare Essential and Premium requirements
Normative lists Essential and Premium packages with pricing by quote.
Its reviewed package information describes Premium features including enhanced data management, value-chain engagement and strategic reduction planning.
Ask the vendor to distinguish software access from the specific advisory deliverables included in your proposal.
If supplier engagement is central to your project, confirm the relevant package, supplier coverage and responsibility for collecting missing information. Also clarify whether recurring support includes reviewing changes between reporting periods.
Source: Normative packages and pricing.
Plan A: distinguish platform functions from expert services
Plan A presents Essential, Pro and Enterprise offerings.
Its reviewed package comparison identifies API access and a dedicated customer success manager within Pro, while also displaying services such as data migration and CSRD readiness.
Request an itemized scope. Identify which reporting, implementation, consulting and integration services are included, optional or separately priced.
Do not assume that every service displayed on a product page is part of the entry package. Confirm the deliverables and support allocation in the actual proposal.
Source: Plan A offerings.
Orki: indicative footprint packages for SMEs and mid-sized businesses
Orki describes itself as a French platform combining corporate carbon accounting, life cycle assessment and ESG reporting with support from climate engineers.
In its initial written submission to GreenProgress, the company identified SMEs and mid-sized businesses as its core customers, particularly in industry, agrifood, technology, construction and services. It described France as its principal market.
Evidence status: These details are provider-reported, not the results of a GreenProgress software test. Requested follow-up information was not received before this update. This addition does not independently verify Orki’s current public pricing or technical documentation.
Starting prices supplied by Orki
| Offering | Starting price supplied | What remains unconfirmed |
|---|---|---|
| Carbon footprint — Compliance | €1,440 excluding VAT | Billing period or per-assessment basis, access duration, covered entities, users and exact deliverables |
| Carbon footprint — In-depth assessment | €1,800 | Billing basis, tax treatment and differences from Compliance |
| Carbon footprint — Reduction strategy | €3,500 | Billing basis, tax treatment and whether the footprint assessment is included or priced separately |
| LCA and CSRD/ESG reporting | Custom quote depending on scope | Assessment boundaries, modules, support, deliverables and recurring charges |
These are starting figures from the provider’s initial message. They are not binding quotes, verified annual subscription fees or total implementation costs.
VAT exclusion was explicit for the €1,440 figure; treatment of the other figures should be confirmed. Do not add the three footprint figures together or assume they are cumulative packages.
Capabilities described by the provider
Orki reports coverage of Scope 1, 2 and 3 emissions, with reference to the Bilan Carbone® method, GHG Protocol and the French BEGES framework.
It describes automated activity-data collection, including AI-assisted collection, and collaborative tools for internal contributors.
GreenProgress has not independently verified:
- Coverage and treatment of individual Scope 3 categories.
- Calculation traceability and emission-factor sources.
- Available integrations and export formats.
- Data-review controls and historical version management.
The company also describes reduction planning that quantifies potential carbon savings and costs, product LCAs according to ISO standards, eco-design support and environmental declarations such as FDES. Its initial introduction also mentioned PEP.
For ESG reporting, Orki describes support for CSRD-related work and VSME disclosures. Exact assessment standards, reporting deliverables and independent verification arrangements were not confirmed.
These services should not be assumed to be included in the entry footprint package.
Orki states that its methodology is validated by Association Bilan Carbone and recognised by ADEME and Bpifrance. GreenProgress has not independently established the scope, current status or documentary basis of those statements.
Those statements should not be interpreted as certification of the software, regulatory approval or a guarantee that a customer’s inventory will pass independent assurance.
The provider also describes engineering assistance with modelling, audit preparation and reporting validation. Included hours, review procedures and the distinction between internal support and independent assurance remain unconfirmed.
Platform languages, geographic support outside France, data-hosting arrangements and security certifications were not confirmed.
Before comparing its figures with another vendor’s annual license, request:
- Package scope and billing basis.
- Platform-access duration and renewal terms.
- Covered entities, facilities and reporting periods.
- Support allocation and defined deliverables.
- Data-export rights and available formats.
- Separate charges for LCA, ESG and reduction-planning services.
A provider-reported starting price alone cannot establish that Orki is cheaper or more capable than the other platforms.
Source: Orki’s initial written submission to GreenProgress; official website. The submission is not a publicly accessible pricing source.
IBM Envizi: model data volume and module selection
IBM describes Envizi pricing in terms of data-management needs, using “Accounts” as units for tracking activity data, supplier data or other indicators.
It offers account bundles and allows buyers to add functionality. Its calculator produces an indicative estimate, not a binding offer.
Ask how your facilities and data streams translate into billable Accounts. Then price the required modules and a realistic growth scenario.
Confirm implementation, migration and partner-service costs separately. A configuration that covers the initial dataset may need adjustment as reporting requirements expand.
Source: IBM Envizi pricing methodology.
Salesforce Net Zero Cloud: confirm edition, region and add-ons
The reviewed US pricing page requests contact for Net Zero Cloud Growth.
Pricing can vary by edition and region. A number published for one configuration should not be presented as a universal starting price.
Salesforce also lists separately priced add-ons. Obtain a proposal covering the edition, required users, supplier engagement, AI functionality and integrations.
If your organization already uses Salesforce, investigate how the proposed workflow connects with existing systems rather than assuming that existing licenses cover the required features.
Sources: Net Zero Cloud pricing and add-on pricing.
Total Cost of Ownership: What to Budget Beyond the License
Build your budget around the work required to operate the system and produce the agreed outputs.
| Cost component | What to clarify before signing |
|---|---|
| Subscription or assessment fee | Editions, modules, access duration, users, entities and renewal conditions |
| Implementation | Configuration, historical data loading and project management |
| Integrations | Connectors, API access, third-party licenses and maintenance |
| Data preparation | Classification, unit conversion, duplicate removal and missing records |
| Internal labor | Finance, procurement, operations and sustainability staff time |
| Advisory services | Methodology decisions, supplier assistance and report preparation |
| Independent assurance | Verifier fees and the effort needed to answer evidence requests |
| Exit and migration | Data export, retention and transfer to another system |
Illustrative first-year budget
The following amounts are invented solely to demonstrate budgeting. They are not market averages, vendor quotes or expected prices for a particular company.
| Component | Hypothetical amount, USD |
|---|---|
| Annual software subscription | $12,000 |
| Initial configuration | $4,000 |
| Data preparation and migration | $3,000 |
| Internal work: 120 hours at $40/hour | $4,800 |
| External methodological support | $2,000 |
| First-year total before tax and independent assurance | $25,800 |
In this example, the first-year total is more than twice the subscription.
Later-year costs should be calculated separately. Some setup work may disappear, while recurring support, new facilities or additional modules may increase spending.
Choose by Operational Complexity
A first inventory with a manageable dataset
Prioritize a clear data template, understandable calculations, useful exports and accessible methodological help.
A free plan or a controlled spreadsheet workflow may be worth evaluating before committing to a larger platform.
Test whether the team can complete the required inventory and answer customer questions using its actual data. A low subscription price has limited value if the process cannot be maintained.
A growing organization with multiple contributors
Prioritize review workflows, consistent methods across business units, access permissions and repeatable data collection.
Ask each vendor to demonstrate how corrections, approvals and missing data are handled.
Compare a three-year scenario that includes expansion, rather than choosing solely on a discounted first year.
A complex group or specialized business
Prioritize consolidation, historical changes, evidence retention and the treatment of material emissions sources.
Financial institutions, manufacturers and agricultural businesses should test relevant sector calculations explicitly.
Request a demonstration using representative records. A generic dashboard does not establish that a system can handle your portfolio, production process or supplier dataset.
Shortlist by Company Size and Buying Need
These are starting points for evaluation, not performance rankings.
Company size is a practical organizing aid; operational complexity and required outputs should decide the final shortlist.
| Buyer profile | Starting points from this comparison | What must be validated |
|---|---|---|
| Small team preparing a first inventory | Persefoni Pro; a scoped Greenly proposal | Whether the workflow, support and export options meet the actual deliverable |
| Growing business seeking accounting plus advisory support | Normative, Plan A and Greenly | Package boundaries, supplier work, consulting deliverables and recurring costs |
| French SME or mid-sized business seeking a supported footprint assessment | Orki, based on its own description; suitability not independently tested | Billing basis, scope, languages, advisory allocation and separation of footprint, LCA and ESG packages |
| Multiple entities with extensive sustainability data | IBM Envizi and Watershed | Consolidation, data volume, review controls and implementation effort |
| Organization assessing a Salesforce-based workflow | Salesforce Net Zero Cloud | Required edition, integrations, extra licenses and complete contract cost |
A listed platform may suit more than one profile. Do not exclude a vendor solely because it appears in a different row; use the same requirements brief to check fit.
Technical Checks Before Buying
The GHG Protocol Corporate Standard provides requirements and guidance for corporate inventories. Use an appropriate accounting framework to define your needs before evaluating software.
Ask vendors to demonstrate the following tasks:
- Configure the organizational boundary and explain consolidation choices.
- Trace a result back to its input, unit, emission factor and calculation.
- Identify estimated, missing and corrected information.
- Preserve historical calculations when factors or records change.
- Export the data and evidence needed outside the platform.
- Show how reviewers approve changes and how access is controlled.
For electricity, ask how the system supports location-based and market-based accounting where applicable.
The GHG Protocol Scope 2 Guidance addresses purchased energy and quality criteria for contractual instruments. A renewable-energy label alone does not establish appropriate accounting treatment.
Treat “audit-ready” as a claim to investigate. Ask for an example evidence package and identify the work the customer must still complete.
Preparing an inventory that can be verified and obtaining independent assurance are separate tasks. Establish which activities are included in the vendor’s proposal.
Regulatory Reporting, Standards and Voluntary Targets
These categories influence procurement differently. A platform feature does not establish whether your organization has a legal reporting obligation.
CSRD and European reporting
When evaluating software for European sustainability reporting, first establish which requirements apply to the organization and reporting period.
Do not use a vendor’s “CSRD-ready” label, a general company-size category or an employee threshold in isolation to determine legal applicability.
Consult the European Commission’s official information on corporate sustainability reporting and the relevant legislation and national implementation. Record the requirements used in your procurement brief, including the applicable reporting framework and timetable.
If VSME support is relevant, ask the vendor to identify the specific disclosures, outputs and version supported. Keep those requirements separate from any statutory reporting obligations applicable to the business.
Official reference: European Commission — Corporate sustainability reporting.
US SEC climate disclosure requirements
For US reporting, confirm the applicable requirements and their current legal status before treating a particular disclosure as mandatory.
Distinguish adopted rules, proposed changes, implementation dates and litigation-related developments. A vendor’s product description does not establish which requirements are currently enforceable for a specific organization.
Ask vendors to map the proposed reporting workflow to the requirements identified by your legal or reporting team.
Official reference: US Securities and Exchange Commission — Rules and regulations.
SBTi and PCAF
SBTi develops target-setting standards and provides validation through SBTi Services. PCAF provides accounting and reporting guidance for emissions associated with financial activities.
Neither should be described as a general law requiring every company to buy carbon accounting software.
If either framework is relevant to your organization, ask the vendor which calculations, outputs and versions its proposed configuration supports. Separate software functionality from any external validation or assurance process.
Sources: SBTi and PCAF Standard.
Request Quotes Vendors Can Actually Compare
Send every shortlisted vendor the same requirements brief.
Include your entities, locations, countries, reporting period, material emissions sources, available data, required outputs and intended users.
Ask for a written response covering:
- The exact edition and included modules.
- The billing basis: subscription, assessment, project or another arrangement.
- Implementation milestones and customer responsibilities.
- Support hours and defined advisory deliverables.
- Data, supplier, user and entity limits.
- Recurring charges, optional services and renewal terms.
- Data ownership, export formats and termination conditions.
Use a sample dataset in the demonstration. Ask the vendor to import it, show a calculation, correct an error and export supporting evidence.
Evaluate the work required from your team at each step. A shorter sales presentation is not evidence of a shorter implementation.
Frequently Asked Questions
Is there free carbon accounting software?
Yes. The Persefoni Pro plan identified in this review is offered free and includes Scope 1, 2 and 3 calculations.
Check the current plan comparison, usage conditions and any required additional services before deciding that it meets your complete reporting workflow.
What is the best platform for a small business?
Start with your required output, available data and internal capacity.
Compare the least complex solution that can produce a defensible inventory, useful evidence and repeatable updates. Headcount alone cannot identify the best product.
Does software guarantee regulatory compliance?
No. Compliance depends on the applicable requirements, inventory boundary, methods, data, controls and disclosures.
Software can support those tasks, but the organization must establish what is required and how it will be delivered.
Can a corporate inventory replace a product footprint?
Do not assume so. A corporate inventory and a product-level assessment answer different questions.
Define the required product, boundary, unit and method, then check whether the proposed package supports that assessment.
How should implementation time be estimated?
Request a project schedule tied to data readiness, integrations, entities and required review.
Separate the vendor’s configuration work from your team’s data collection and validation. Avoid treating a generic implementation promise as a guaranteed reporting deadline.
Make the Final Decision on Evidence and Total Cost
Choose the platform that can handle your actual data, explain its calculations and deliver the outputs your organization needs within a sustainable operating budget.
Before signing, obtain an itemized quote, test a representative workflow and confirm how you will retain access to your data.
Make acceptance criteria explicit where possible: the required inventory can be completed, selected calculations can be reconstructed, and the agreed evidence can be exported.
These steps make the comparison more useful than a broad price range or an unsupported “best overall” ranking.
