How long does the migration take?

Median 30 days for a single-plant producer, 60 days for a multi-plant group.

Will my certification body need a new audit?

No. The annual ISCC-EU/REDcert audit cycle is unaffected. Most customers complete migration mid-cycle and the next scheduled audit runs against the new ledger.

What happens to the historical Excel records?

They are archived as read-only and remain available as the historical reference. The ledger contains the replayed events so post-cutover queries don't need the old workbook.

Can the platform handle our edge cases?

Almost certainly yes — biomethane mass balance has well-known edge cases (multi-scheme, partial allocation, post-close corrections) and they are all first-class flows in GooClear.

Do I lose flexibility moving off Excel?

You lose the ability to silently edit history (which auditors flag anyway). Everything else — bespoke allocation rules, custom GHG defaults, ad-hoc reports — is supported through configuration and export.

Pricing is per producer plant or per traded TWh. Migration is included for in-year cutovers; an upgrade quote is provided once we see the workbook.

Excel vs ledger

Stop running biomethane mass balance in Excel

Spreadsheets get you to the second certification audit and break around the third. GooClear replaces the multi-tab workbook with a hash-chained, ISCC-EU-aligned ledger you can hand to the auditor — without the year-end reconstruction panic.

Book a demo See the 30-day plan

Migrate in days. First auditor-ready report in week four.

Excel vs the GooClear ledger

We've migrated dozens of plants off Excel. The pattern is the same: the workbook works until it breaks all at once. Here's what changes, item by item.

	GooClear ledger	Excel workbook
Carryover between periods	Computed continuously	Year-end manual reconstruction
Tamper-evidence	Hash-chained events, append-only	Anyone with edit access can rewrite history
GHG default updates	Centrally updated, batches re-flagged	Search-and-replace; affected batches missed
Multi-scheme support	ISCC-EU, REDcert, SURE in parallel	One workbook per scheme
Auditor drill-down	Click GoO → feedstock batch in 2 clicks	Hunt across 5 tabs and a shared drive
Period close	Hash-pinned snapshot	PDF export of a tab — no integrity guarantee
Cross-team access	Role-based, audit logged	Shared file, no audit trail
Audit prep time	Days	Weeks

Why Excel breaks under RED III

Excel does what it does well: arithmetic over rows. It is the wrong tool for biomethane mass balance under RED III because three things RED III now demands are not arithmetic. First, immutability: every certified event must be tamper-evident and verifiable years later. A workbook can be rewritten silently. Second, integration: the platform must pull certificates of conformity from suppliers, push retirements to national registries, and submit transactions to the Union Database. Workbooks don't integrate. Third, continuous state: certified position must be queryable at any point in the year, not only after a quarter-end reconstruction.

What the Excel teardown looks like

Most spreadsheet-based mass balances we've replaced share a common shape: one tab per plant, one tab per voluntary scheme, one tab per booking period, a master 'sustainability characteristics' lookup, a 'transfers' tab and a final 'audit pack' tab built from VLOOKUPs. The teardown is methodical.

We map every tab to a canonical event type: supply receipt, process measurement, allocation, transfer, retirement.
We ingest the last 12 months as historical events and replay them into the ledger to validate that GooClear arrives at the same closing position.
Any discrepancy gets resolved with the customer before cutover — the migration is also a free audit of the old workbook.
Cutover happens at a period boundary so the historical workbook stays a clean read-only reference.

The 30-day plan to ditch Excel

From kickoff to first auditor-ready report from the new ledger is typically 30 days for a single-plant producer. The shape is the same every time.

Days 1–5 — Workbook discovery, schema mapping, GHG defaults reconciled.
Days 6–14 — Last 12 months replayed into the ledger. Discrepancy report shared with customer.
Days 15–22 — Registry bridges, voluntary-scheme exports and UDB pre-formatting wired.
Days 23–30 — Dry audit with our biomethane specialists. Hash-pinned cutover. Old workbook archived as read-only reference.

FAQ — replacing Excel with GooClear

How long does the migration take?
Median 30 days for a single-plant producer, 60 days for a multi-plant group.
Will my certification body need a new audit?
No. The annual ISCC-EU/REDcert audit cycle is unaffected. Most customers complete migration mid-cycle and the next scheduled audit runs against the new ledger.
What happens to the historical Excel records?
They are archived as read-only and remain available as the historical reference. The ledger contains the replayed events so post-cutover queries don't need the old workbook.
Can the platform handle our edge cases?
Almost certainly yes — biomethane mass balance has well-known edge cases (multi-scheme, partial allocation, post-close corrections) and they are all first-class flows in GooClear.
Do I lose flexibility moving off Excel?
You lose the ability to silently edit history (which auditors flag anyway). Everything else — bespoke allocation rules, custom GHG defaults, ad-hoc reports — is supported through configuration and export.
What does it cost?
Pricing is per producer plant or per traded TWh. Migration is included for in-year cutovers; an upgrade quote is provided once we see the workbook.

Move off Excel before the next audit cycle

Bring the workbook to a 30-minute call. We'll quote the migration and walk through what the first audit on the new ledger looks like.