Carbon accounting for small business owners
Audit-ready carbon accounting, built for small businesses.
Everything a small business owner needs to build an accurate, credible, audit-ready GHG inventory yourself, without a sustainability team or software built for big companies.
7-day free trial, then $150 per user, per month.
Grid electricity
Scope 2 · location-based
18,420 kWh98%Natural gas
Scope 1 · stationary combustion
1,240 therms96%Site
Austin, TX · Facility 04
detectedreview
The platform
Made for small teams, not sustainability departments.
Core walks a small business owner through a complete GHG inventory, from the first data point to the report your auditor signs off on. No sustainability team required.
Track every emission
Scope 1, Scope 2, and all 15 Scope 3 categories, organized by facility and source in one place.
Audit in a click
Generate audit-ready reports that show the factor, the source, and the math behind every number.
Let AI enter the data
Upload a bill, invoice, or spreadsheet and Core pulls the activity data for you to approve.
Trusted factors built in
EPA, DEFRA, IEA, and eGRID emission factors, with the source and year on every record.
AI that shows its work
Every number traces back to a document you can open.
Core reads your spreadsheets and PDFs, extracts the activity data, and keeps the original file attached. You approve before anything enters the inventory.
Document scanner
Drop in a utility bill, invoice, or Scope 3 spreadsheet. Core extracts amounts, dates, sites, and categories, each with a confidence score.
Scope 3 classifier
Messy line items get sorted into the right Scope 3 category, the step that usually stalls an inventory for weeks.
Review, then approve
You check the extracted values and confirm before they are added. The source document stays stored for audit support.
Invoice · Q1 freight.pdf
- Inbound freight, 4 shipmentsCat. 4
- Business travel, airCat. 6
- Purchased goods, steelCat. 1
- Waste, landfillCat. 5
- Original documentstored for audit
Key features
A full inventory workflow, not just a calculator.
Company & inventory setup
Set boundaries, reporting year, facilities, and the emission sources that apply to you.
Emission factor library
Built-in EPA, DEFRA, IEA, eGRID, and GHG Protocol factors, plus custom factors when you need them.
Source document management
Attach invoices and bills to each record and keep all your evidence in one place.
Data quality & validation
Flag estimates, document assumptions, and catch gaps before you finalize the inventory.
Progress tracking
See completion by scope, category, and facility, and find exactly what is still missing.
Audit-ready reporting
Export raw inputs, results, factors, formulas, and supporting docs in one clean package.
How it works
Three steps from sign-up to signed-off.
- 1
Set up your inventory
Add your company, reporting year, and facilities, then pick the emission sources that apply to you.
- 2
Collect your data
Enter it by hand, upload spreadsheets, or let AI extract it from your documents. You approve every value.
- 3
Report with confidence
Generate audit-ready reports with the sources, factors, and math attached to every figure.
Customer stories
"The platform's user interface is intuitive and provides a clear audit trail for third-party verification."
Pricing
One plan. Everything included.
North Star Core
$150 / user / month
A complete, audit-ready carbon inventory for your business.
- Scope 1, 2, and all 15 Scope 3 categories
- AI document scanning and data extraction
- Full emission factor library
- Source document management and audit trail
- Data quality checks and progress tracking
- Audit-ready reports with sources attached
- Email support included
7-day free trial, then $150 per user each month. Cancel anytime.
FAQ
Questions small business owners ask.
Start your inventory today.
Begin your 7-day free trial and have your first data in minutes.