RFS
D3 to D6 RIN generation, with pathway evidence prepared for EPA review.
Streamline audits using Mangrove
Verification bodies get complete, recalculable audit packages from the projects they verify, so reviews start at the exceptions instead of the reconstruction.
Faster audits, with less data wrangling
Mangrove streamlines the data-gathering phase of an engagement, so your team spends its hours on judgement rather than collection.
Faster access to project data
Evidence arrives complete and structured the day access opens. No sample requests, no chasing spreadsheets over email.
Increase audit throughput
Reviews start at the exceptions instead of the reconstruction, so your practice can take on more engagements with the same team.
Support customers where they work
Packages open in Excel with formulas intact. Nothing new to learn, and no dashboard standing between you and the numbers.
Automated audit readiness
When a project shares a report, you get the reported outputs, every production batch behind them, the source data, and the supporting documents, in one place and scoped to your engagement.
It is assembled continuously as the project operates, so it is ready the moment your engagement opens rather than weeks after.
- Reports open in the browser or download as a data package
- Daily injection and production data behind every total
- Substitutions disclosed with the rule applied
Northfield Renewables — Output Report
Renewable Fuel Standard (RFS)
Reporting period
Apr 1 – May 1, 2026
Report total
34,653.1 MMBtu
Production batches
30
Documents (1)
RFS Report — April
Production batches (30)
BApril 1 — Gas injected1,160.4 MMBtu
BApril 2 — Gas injected1,162.8 MMBtu
BApril 3 — Gas injected1,181.0 MMBtu
27 more batches
XLSXRFS Report — Apr 2026.xlsx
| Biogas tokens | Beef | Dairy | Other waste | Total MMBtu |
|---|---|---|---|---|
| Methane MMBtu | 6,082.52 | 12,986.98 | 15,608.75 | 34,678.24 |
| Injected actuals | 6,093.01 | 12,982.24 | 15,577.84 | 34,653.10 |
| K1 RIN generation | 6,093.01 | 12,982.24 | — | 19,075.26 |
“With Mangrove, the data we need for ISCC audits is organized and accessible from day one. That means less time chasing information and more time delivering high-quality audits and growing our practice.”
Jack Symonds
Director, EnviroSense
Purpose-built for verification
The data package formats Mangrove generates are developed in partnership with leading audit, verification and certification firms.
Reported figure to raw reading
Follow any number down through the batch, the model run, and the interval data that produced it, each step carrying its own timestamp and source reference.
Substitutions disclosed up front
Where data was gap-filled you see the original value, the replacement, and the rule applied, separated from clean records before your review starts.
The project controls access
Verification bodies are invited by the project and scoped to the engagement, at no cost to you or to them. Mangrove never sits between you and your client.
Seamless collaboration
Workbooks carry live formulas and named ranges, so you can change an input, watch the result recalculate, and confirm the reported figure holds.
Questions, findings, and responses stay attached to the figure they concern, so the thread does not scatter across inboxes.
E7fx=ROUND(D7*Equivalence!$B$4,0)
| B | C | D | E | |
|---|---|---|---|---|
| 4 | Batch ID | Feedstock | Volume (gal-eq) | RINs |
| 5 | NF-2026-0416 | Dairy manure | 10,884 | 11,907 |
| 6 | NF-2026-0417 | Dairy manure | 9,240 | 10,109 |
| 7 | NF-2026-0418 | Dairy manure | 11,412 | 12,480 |
| 8 | NF-2026-0419 | Food waste | 7,806 | 8,540 |
| 9 | Total | 39,342 | 43,036 |
Gain access to a growing network of projects
Producers across low carbon fuels and carbon removal run their compliance on Mangrove, and every one of them needs audits.
Approved partners are surfaced to projects looking for verification in their programs and regions, at no cost to join.
24
Programs supported across compliance, certification, and voluntary markets
No cost
To the auditor to access project data
Verify across the programs your clients use
Mangrove supports a growing list of programs across low carbon fuels and carbon removal.
California LCFS
CARB credits with CA-GREET carbon intensity modelling behind every figure.
Canada Clean Fuel Regulations
GHGenius-based carbon intensity and provincial reporting in one place.
ISCC
Proofs of sustainability traceable from feedstock through to delivered fuel.
Your independence stays yours
Mangrove prepares evidence. It does not perform audits, does not sit between you and your client, and does not review your findings.
Projects control access to their auditors and verifiers. Auditor accounts are provided at no cost to the auditor or the project.
Common questions
Does Mangrove perform audits?
No. Mangrove prepares and structures the evidence; the audit itself remains entirely yours. Mangrove does not perform audits, does not sit between you and your client, and does not review your findings.
Is there a cost to auditors?
No. Auditor accounts are provided at no cost to the auditor or to the project being verified.
Which programs are supported?
RFS, LCFS, Oregon CFP, CFR, ISCC, and 45Z, plus voluntary carbon registries. The full list is on the Programs page.
How is data substitution handled?
Every substitution is disclosed in the package with the original value, the replacement value, the rule applied, and a timestamp. Rules are applied per program, because they differ between programs.
How do I get access to a client's data?
The project invites you. Access is scoped to the engagement and controlled by the project, not by Mangrove.