# Sustainability internships: build a traceable carbon-accounting work sample

## Reconcile a two-component energy inventory

All quantities, boundaries and factors are fictional. Factors must not be reused for real reporting.

### Original teaching inputs

| Component | Baseline quantity | Factor | Reduced-use quantity |
| --- | --- | --- | --- |
| Purchased electricity | 120000 kWh | 0.35 kg CO2e/kWh | 108000 kWh |
| Fuel energy | 10000 kWh | 0.20 kg CO2e/kWh | 10000 kWh |

## Your turn

Calculate baseline and reduced-use totals in metric tonnes. Explain why a 10% electricity reduction does not imply a 10% company-wide emissions reduction.

## Your answer

[Write your approach here.]

## For your own application

Add a source ledger, unit conversion check and missing-data register before drawing a reporting chart.

Return to the guide for the worked answer and source notes:
https://internshipdeadlines.com/guides/sustainability-internships-carbon-accounting