How to recalculate uploaded files

Last updated: 18 August 2026

Files and Submissions

Recalculation lets admins re-run the emissions calculation on files that are already uploaded, straight from the file list in Analyse > Files & Submissions. When NetNada's calculators improve, those better numbers can be applied to files you uploaded months ago — without re-uploading anything.

In this article, you'll learn how to:

Understand when recalculating your files is worth doing
Select one or several files and run a recalculation
Read the live progress and per-file results
Know what happens to your existing numbers — and what can't go wrong

Recalculation is an admin action. If you can't see the Recalculate option, ask your account admin to run it for you.

Why recalculation exists

NetNada's calculation engines improve over time — matching gets smarter and emission factors are refined. Until now, those improvements only applied to new uploads. Recalculation closes that gap: it re-runs today's calculators over your existing files, so your whole inventory benefits from the latest methodology.

It works across categories, too. The system determines the right data type for each file itself, so you can select several files from different categories — say an electricity file and a purchased goods file — and recalculate them in one run.

Run a recalculation

Open the file list

Navigate to Analyse > Files & Submissions to see your uploaded files.

Select the files to recalculate

Tick one or several files — they can belong to different categories. The Recalculate action appears in the toolbar alongside download and delete.

Start the recalculation

Click Recalculate. A progress bar shows the run as it happens, so you can watch each file move through.

Review the per-file results

When the run finishes, each file reports its own outcome — recalculated, skipped with the reason why, or failed with the previous numbers left untouched.

File list with two files selected and the Recalculate action in the toolbar beside download and delete

Recalculation results dialog reporting files recalculated, skipped with reasons, and one failed with previous numbers kept

How your existing numbers are protected

Recalculation is safe by design. When a file recalculates successfully, the old calculation lines are voided and replaced by the new ones — nothing is silently overwritten, and the change is visible in your audit trail. If a file fails partway through, its previous numbers are left completely untouched, so a failed run can never leave you worse off than before.

Some files are skipped rather than recalculated, and the results always tell you why. The two common reasons are a category the recalculation engine doesn't yet support, and very large files above the row cap. Skipped files keep their existing numbers.

Once a file recalculates, the updated figures flow through to your dashboards and the audit trail automatically — there's nothing further to submit or approve.

Recalculating shortly before you close a reporting period is a good habit — it makes sure the numbers your auditor sees reflect the latest calculation methodology.

FAQ

Will recalculating change my reported emissions totals?

It can — that's the point. If the calculators have improved since you uploaded, the new numbers may differ from the old ones. The old lines are voided rather than deleted, so the change remains traceable in the audit trail.

Can I recalculate files from different categories at the same time?

Yes. Select as many files as you like across categories — the system works out the right data type for each file on its own.

What happens to my data if a recalculation fails?

Nothing. A failed file keeps its previous numbers untouched. You can try again later or contact support if the same file keeps failing.

Why was one of my files skipped?

The results list the reason for every skipped file — usually the file's category isn't supported for recalculation yet, or the file is very large and sits above the row cap. Skipped files keep their existing numbers.

Do I need to re-upload anything before recalculating?

No. Recalculation works entirely from the data already in NetNada — select the files in the list and run it.

Audit Page Understanding your files and submissions Why your emissions didn't calculate (and how to fix it)