CertifHy Pre-Certification vs Full Certification: What They Are and When You Need Each

Introduction

There is a timing problem at the heart of hydrogen certification. A full CertifHy certificate requires an operating plant producing real consignments, but developers and lenders need confidence a project can be certified long before it is built. Pre-certification solves that problem. This article explains what pre-certification and full certification are, how they differ, and when each one belongs in a project’s timeline.

Full certification: what it requires

Full CertifHy certification applies to a plant that is built and running. It confirms that real production meets the RFNBO rules. The process, set out in the scheme’s registration and certification procedure, runs in a defined sequence.

The operator registers, then completes a self-assessed risk review that sizes how intensively the auditor will sample. It then engages a recognised Certification Body. The initial audit is on-site and must begin within six months of registration. If no major or critical non-conformities remain, a certificate is issued and is valid for one year. Where findings arise, they must be closed within set periods, with major findings resolved faster than minor ones, and then re-checked. The certificate is maintained through surveillance audits and re-certification before it expires.

Feature	Full certification
Requires	An operating plant producing real consignments
Audit	On-site, begins within six months of registration
Validity	One year, maintained by surveillance and re-certification
Basis	Actual, measured production data

The key constraint is simple. A full certificate needs an operating plant. That leaves everything before commissioning uncovered, which is exactly the period when a project is being designed and financed.

Pre-certification: the design-stage dry run

Pre-certification fills that gap. It is a design-stage assessment that tests the project against the rules before construction. It uses projected data and design documentation rather than measured production. It checks the intended electricity qualification, the projected greenhouse gas calculation, the system boundary and the chain-of-custody design against the requirements.

The purpose is to find and fix problems while they are still cheap to fix. A design choice about how the renewable plant connects to the electrolyser, or how ammonia is stored, can determine whether a project can ever be certified. Discovering that at the design stage is manageable. Discovering it after construction is not.

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Pre-certification does not shortcut the audit. It makes sure that when the audit comes, there is nothing left to fail on.

When you need each

The two are sequential, not alternatives. Pre-certification belongs in project development, before the final investment decision and through financing, when developers and lenders want evidence the design will meet the RFNBO rules. Full certification belongs after the plant is built and producing, when real consignments can be audited. A well-run project uses pre-certification to de-risk the design, then moves to full certification once operational.

How ESGweise helps

ESGweise supports producers through both stages as a readiness partner. At the design stage, we build the projected greenhouse gas model, test the electricity qualification, and pressure-test the design against the rules so pre-certification is well founded. Approaching the operational audit, we help assemble the evidence and close gaps so the certification audit runs cleanly. We do not audit or certify, which keeps our readiness role cleanly separate from the Certification Body. See our assurance readiness and carbon accounting services, and the full scheme in the CertifHy pillar guide.

Conclusion

Full certification proves an operating plant meets the RFNBO rules, but it cannot help a project that is still on the drawing board. Pre-certification does, by testing the design early and preparing it so the operational audit passes cleanly. Used together, they turn certification from a late-stage risk into a managed, staged process, which is exactly what investors and lenders want to see.