Platform Comparison · 2026

CarbonPilot vs Persefoni vs Greenly —
Which carbon platform fits your company?

An honest breakdown of the three most-evaluated carbon management platforms. Pricing, autonomy level, implementation time, and who each platform is actually built for.

CarbonPilot: starts at $99/mo
Persefoni: $55K–$260K+/yr
Greenly: $3.8K–$7.8K/yr
Annual Cost
CarbonPilot
$1.2K+
·
Greenly
$3.8K+
·
Persefoni
$55K+
Time to Live
CarbonPilot
Days
·
Greenly
Weeks
·
Persefoni
2–3 mo
Ongoing Expert Needed
CarbonPilot
None
·
Greenly
Climate Expert
·
Persefoni
Full Team
Feature Comparison

Side-by-side: every feature that matters

Feature CarbonPilotMid-market · Autonomous Persefoni
Enterprise · Manual
 Greenly
SMB/Mid · Guided
Pricing & Cost
Annual platform cost $1.2K–$9.6K/yr $55K–$260K+/yr $3.8K–$7.8K/yr
Implementation / consulting fees None $100K+ typical Low / self-guided
Ongoing sustainability team required No Yes — dedicated team Climate Expert assigned
Free trial / calculator Free calculator Free basic tier Demo only
Emissions Coverage
Scope 1 (direct emissions) ✓ ✓ ✓
Scope 2 (purchased energy) ✓ ✓ ✓
Scope 3 (value chain) ✓ ✓ ⚠ Extra config
Supply chain / supplier portal ✓ ✓ Best-in-class ⚠ Limited
Autonomy & Automation
Autonomous operation after setup Fully autonomous Manual teams required EcoPilot AI + Expert
Automated data collection ✓ ⚠ Partial ✓ 100+ integrations
Automated offset purchasing ✓ ✕ ✕
Auto-generated compliance reports ✓ ✓ With team ✓ With Expert
Anomaly detection / AI monitoring ✓ ✓ PersefoniGPT ✓ EcoPilot
Compliance & Audit-Readiness
Audit-grade reports ✓ ✓✓✓ Best-in-class ⚠ Limited
SEC / CSRD / CDP support ✓ ✓ ✓
SBTi / Net-Zero alignment ✓ ✓ Net-Zero Navigator ✓
Financed emissions (PE / asset mgmt) ⚠ Roadmap ✓✓ Strongest ✕
Onboarding & Setup
Time to first report Days 2–3 months 2–4 weeks
Dedicated onboarding team ✓ Automated ✓ Climate Solutions Director ✓ Climate Expert
Non-specialist friendly Yes — set and forget No — steep learning curve Yes — guided UI
Target Market
Best fit Mid-market $10M–$500M Enterprise $250M+ SMB / EU mid-market
Enterprise / Fortune 500 ⚠ Overkill on features ✓✓✓ ✕
Funded startup (Series A+) ✓✓ Best fit ✕ Too expensive ✓
Why CarbonPilot Wins

The one thing nobody else offers: hands-off operation

🤖

Truly Autonomous

Persefoni and Greenly both use AI — but you still need a sustainability team or Climate Expert to operate them. CarbonPilot runs itself after initial setup. It collects data, finds anomalies, purchases offsets, and files reports without anyone on your team touching a dashboard.

Zero
sustainability hires required
💰

Mid-Market Pricing That Actually Works

Persefoni's $55K–$260K/year price tag plus $100K+ consulting fees are impossible for most companies. CarbonPilot starts at $99/mo — and because it's autonomous, you don't add consulting overhead on top. The platform does what their experts do, at a fraction of the cost.

Up to 95%
cheaper than Persefoni all-in
⚡

Days to Live, Not Months

Persefoni implementations average 2–3 months. Greenly takes 2–4 weeks. CarbonPilot is live in days — connect your data sources, and the platform starts tracking immediately. Your first audit-ready report generates automatically. No scoping sessions, no configuration calls.

Days
vs. 2–3 months for Persefoni
Honest Breakdown

When to choose each platform

Persefoni
"The ERP of Carbon" — built for enterprise finance teams
Where it wins
  • Best-in-class Scope 3 supplier engagement tools
  • Strongest audit trail — trusted by $14T+ in asset managers
  • Financed emissions for PE and investment portfolios
  • PersefoniGPT AI copilot embedded across all plans
Where it falls short
  • $55K–$260K+/yr — impossible for most mid-market companies
  • Requires dedicated sustainability team to operate ongoing
  • 2–3 month implementation with $100K+ consulting typical
  • Built for enterprise complexity; overkill for simpler use cases
Greenly
"Simple carbon accounting" — Europe's SMB leader
Where it wins
  • Most accessible UI — designed for non-specialists
  • 100+ pre-built integrations (Shopify, Google, Zendesk, etc.)
  • Strong European footprint — CSRD compliance focus
  • EcoPilot AI handles basic data collection automatically
Where it falls short
  • Still requires an assigned Climate Expert — not truly autonomous
  • Weaker audit trail vs. Persefoni or CarbonPilot
  • Limited US market presence; pricing not publicly listed
  • Scope 3 gaps require additional configuration and expert time
Buyer Fit Guide

Which platform is right for your company?

CarbonPilot
Mid-Market Sweet Spot
  • 50–500 person companies that can't afford $100K+ sustainability budgets
  • Tech, SaaS, DTC, and retail companies needing compliance without a team
  • Series A–C companies starting their compliance journey
  • PE-backed companies preparing for ESG due diligence before exit
  • Any company that wants carbon managed like a SaaS subscription
Persefoni
Enterprise Only
  • Fortune 500 and large enterprises with sustainability departments
  • Asset managers and PE firms tracking financed emissions
  • Companies in highly regulated industries needing Big 4 audit validation
  • Organizations with $250M+ revenue and complex multi-entity structures
Greenly
Europe · SMB Focus
  • European companies facing CSRD mandates needing a guided approach
  • SMBs with 10–100 employees taking first steps in carbon measurement
  • Companies that want a guided human expert rather than full autonomy
  • Businesses with heavy reliance on Shopify, Braze, Zendesk ecosystems

Skip the $100K implementation. Start calculating now.

CarbonPilot's free emissions calculator gives you your Scope 1, 2, and 3 footprint in minutes — no signup, no consulting call, no waiting 3 months. When you're ready to automate, plans start at $99/mo.

Try the Free Calculator See Pricing

Common questions

Is CarbonPilot a Persefoni alternative?
Yes — for mid-market companies. Persefoni is built for enterprises with dedicated sustainability teams and $100K+ implementation budgets. CarbonPilot is built for companies that need audit-grade compliance without hiring a team or paying consulting fees. If you're under $500M in revenue and don't have a sustainability department, CarbonPilot is likely the better fit at 95% lower total cost.
How is CarbonPilot different from Greenly?
Greenly reduces manual work and gives you an assigned Climate Expert to guide setup and reporting. CarbonPilot eliminates the expert entirely — the AI handles data collection, anomaly detection, offset purchasing, and compliance filing autonomously. Greenly is great for companies that want a hands-on human guide. CarbonPilot is for companies that want the system to run itself.
Does CarbonPilot cover Scope 1, 2, and 3?
Yes. CarbonPilot's free calculator and all paid plans cover all three scopes — Scope 1 (direct emissions from fleet and fuel), Scope 2 (purchased electricity), and Scope 3 (business travel, employee commuting, supply chain procurement). The GHG Protocol methodology with EPA 2024 emission factors powers all calculations.
How long does CarbonPilot take to implement?
Most companies are live within days. Connect your data sources (ERP, energy, travel, procurement), and CarbonPilot immediately begins tracking and calculating. Compare that to Persefoni's typical 2–3 month implementation with multiple scoping and configuration calls.
Are CarbonPilot reports audit-ready?
Yes. Enterprise plan reports are audit-grade, built on GHG Protocol methodology with full calculation transparency. The platform monitors regulatory deadlines across SEC, EU CSRD, CDP, and California SB 253/261 — and generates formatted disclosures automatically without human intervention.
What if I'm already using Greenly or Persefoni?
Switching is straightforward. CarbonPilot can import your historical data to maintain continuity of your emissions record. If you're on Greenly, you likely benefit from more advanced compliance automation. If you're on Persefoni, you'll see substantial cost savings — CarbonPilot eliminates the consulting and team overhead that makes Persefoni expensive to operate.