No. 4 of 29 ·Carbon Accounting Software

Persefoni

Web · API

Visit site Alternatives

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Persefoni is ranked #4 of 29 in carbon accounting software on Freedom251. It runs on API, Web. There is a free plan.

Persefoni plans and pricing

All plans

Persefoni Pro Free Free self-service plan · single user · unlimited assets and historical reporting years · some GHG Metrics Reports and Concierge Support are paid add-ons persefoni.com · 30 Sept 2026

Persefoni Advanced Not published Pricing by demo request · intended for sustainability ambitious and enterprise scale companies · unlimited users persefoni.com · 30 Sept 2026

Compared on carbon accounting software

Free plan: Yes
Scope coverage: scope 1-3
Data collection: both
Emissions factors: both
Supplier engagement: Yes
Audit trail: Yes
API access: Yes

Best Persefoni alternatives

See all 12

One bar Carbonfact Free tier No. 1Free6.4 One bar CarbonTool Free tier No. 2$166.67/mo6.4 One bar Greenio Free tier No. 3₹2,999/mo6.4 No signal CO2 AI Paid plans No. 5—5.5 No signal CarbonInk Paid plans No. 6—5.3 No signal 50X Impact Paid plans No. 7—5.2

The record

What it does: Persefoni provides software for organizations to measure, report, and decarbonize their carbon footprints and manage sustainability disclosures.
Emissions coverage: Pro and Advanced cover Scope 1, Scope 2, and all 15 Scope 3 categories.
Reporting: The Sustainability Report Builder offers guided workflows for disclosures using qualitative responses and emissions data for frameworks including CSRD, ISSB, and CDP.
AI features: Persefoni Copilot provides in app carbon accounting support, and PersefoniAI can detect data anomalies; natural language emission factor mapping is listed as coming soon.
Integrations: Integration Hub lists Amazon Web Services, Concur, Expensify, Google Sheets, Navan, and utility providers as integrations.
Security: Persefoni lists SOC 1 Type II, SOC 2 Type II, ISO 27001, and ISO 27017 compliance for both plans.
Hosting and encryption: Persefoni describes its platform as multi tenant SaaS hosted on AWS and says data is encrypted at rest with AES 256 and in transit with TLS 1.2 or above.
Authentication: The security page says Persefoni supports SAML single sign on with identity providers such as Okta, Microsoft, and Ping, as well as optional multifactor authentication and IP allow listings.
Pro limits: Pro is limited to one user and does not include detailed GHG Metrics Reports; the page says it includes unlimited assets and historical reporting years.
Support: All users can access the Help Center, guides, and tutorials; personalized Concierge Support is a paid upgrade.
Intended users: Pro is aimed at companies with low to medium operational complexity, while Advanced is aimed at sustainability ambitious or enterprise scale companies.
Founded: 2020
Headquarters: Mesa, Arizona, United States
Price from: Free

Where it ranks on Freedom251

Best Carbon Accounting Software in 2026#4 of 29

Is Persefoni yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Persefoni

Sources

persefoni.com· checked 30 Sept 2026
persefoni.com/pricing· checked 30 Sept 2026
persefoni.com/en-gb/product/integration-hub· checked 30 Sept 2026
persefoni.com/documents/security· checked 30 Sept 2026