# Our new plant started in October. How do we report its emissions for the year?

Canonical: https://senseible.earth/answers/new-plant-started-mid-year-carbon-reporting

Include it from the day it started operating, and say so. The company total rises because of a new source, not worse performance, so show the new plant separately for the first year and use intensity per tonne for comparisons. Trial runs before commercial production still count.

## What to report

- Emissions from the start date to year end.
- The start date and that it is a part year.
- Intensity per unit of output, so the trend stays meaningful.

## Base year

A new plant is organic growth, not an acquisition. You usually do not recalculate the base year, but explain the jump.

## Commissioning

Fuel and power used for trials and commissioning are real emissions. Include them, labelled if large.

## What Senseible does here

Senseible reads fuel, electricity and production documents into dated, fingerprinted plant records, so the monthly intensity behind a figure can be traced to its source.

- [Choose a base year](https://senseible.earth/answers/how-to-choose-base-year-carbon-inventory)
- [Emissions fell but intensity rose](https://senseible.earth/answers/emissions-fell-but-intensity-rose)
- [Several plants: one report?](https://senseible.earth/answers/multi-plant-msme-one-report-or-per-plant)

Sources: [GHG Protocol Corporate Standard](https://ghgprotocol.org/corporate-standard), [GHG Protocol standards](https://ghgprotocol.org/standards), [ISO 14064-1, 14064-3 and 14067 (iso.org)](https://www.iso.org)

Last reviewed 2026-10-22.