Side by side
CarbonTool vs Hedgehog Carbon Platform
Both stand on carbon accounting software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
CarbonTool combines emissions data collection, framework reporting, entity consolidation, and reduction planning. The free Starter is limited to Scope 1 and 2, while paid plans add full Scope 3 coverage.
Visit CarbonTool Free plan Web
Hedgehog Carbon Platform combines emissions accounting, reporting support, and team workspaces with AI guidance and human expertise. Its free plan has defined user, entity, and source limits, while paid plans start at the listed monthly rates.
Visit Hedgehog Carbon PlatformThe facts
| CarbonTool | Hedgehog Carbon Platform | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Web |
| Lowest paid plan | Core: €2,000 a year | Pro: €100 a month |
| Plans published | 4 | 3 |
| Maker | Not published | Not published |
| Website | carbontool.com | hhc.earth |
| On carbon accounting software | #3 of 31 | #7 of 31 |
CarbonTool: what it does well
- Supports CSRD, VSME, GRI, CDP, and ISSB reporting.
- Includes more than 200 emission-source templates.
- Tracks entities separately and consolidates group inventories.
- Offers scenario comparisons for impact, cost, and return.
- Emissions data stays on EU infrastructure.
What to know first
- Free Starter covers only Scope 1 and 2.
- Paid plans start at €2,000 per year.
- MCP server access is on request.
Hedgehog Carbon Platform: what it does well
- Tracks Scope 1, 2, and 3 emissions.
- Supports multiple business locations and sites.
- Includes an AI guide and data-sheet analysis.
- Free plan includes five emission sources.
- Human GHG experts are available for support.
What to know first
- Few integrations with other software.
- Free plan is limited to one user and entity.
- Pro starts at €100 a month, billed annually.
- Expert starts at €1,200 a month.
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