Savings verification is an independent control before the issuance request, not a formality or a promise of administrative validation. Selection starts with the verifier’s current accreditation scope, competence for the action and absence of conflicts, then considers capacity and timing. The dossier should be ordered and reproducible. Review details must be checked against the regulations, applicable sheet or methodology and procedure governing the action.
Check accreditation, scope and independence
Start procurement by identifying an ENAC-accredited verification body whose current scope covers the relevant type of energy-savings verification. Check the live ENAC scope and applicable scheme documents, not only a logo, proposal or past certificate. Record the legal entity, accreditation number, scope wording and date checked. Technical familiarity, capacity and timetable matter, but they do not substitute for valid scope. If the action combines technologies or a non-standardised method, ask the body to confirm coverage explicitly.
Test independence before exchanging the full dossier. Disclose designers, installers, advisers, owners, financiers and the authorised CAE scheme participant, together with earlier work performed by related entities. Ask how conflicts, impartiality and confidentiality will be managed and record the response. Do not ask the verifier to design the savings calculation it will later assess. Clarification of expected evidence is different from consultancy that creates the solution, and the engagement should preserve that boundary throughout questions and revisions.
Define the engagement and prepare the data room
Write a precise engagement scope. Identify sites, actions, catalogue sheet versions or methodology, reporting period, calculated savings, expected sampling or visits, language, deliverables and target dates. State which party supplies records and who may answer technical questions. Agree how scope changes, additional work and cancellations are authorised. The timetable should leave space to resolve findings without assuming a favourable opinion. Verification is a prerequisite control in the process, not a purchase of approval or a guarantee of later issuance.
Prepare a version-frozen data room with an index that mirrors the verifier’s decisions. Include the eligibility rationale, rights and agreements, technical report, calculation, evidence matrix, photographs, invoices, commissioning records, measurement data where relevant and applicable source version. Keep raw evidence distinct from explanatory notes. Test links and permissions with an external account. Add a scope note describing boundaries, exclusions, known limitations and contacts so the reviewer does not infer dossier architecture from filenames.
Manage questions, samples and findings
Submit a calculation package that can be rerun. Expose formulas, units, conversions, source cells, rounding and treatment of missing data; remove hidden overrides and unexplained hard-coded values. For standardised actions, map inputs to the applicable sheet. For non-standardised actions, connect baseline, measurements and adjustments to the approved method. A second internal reviewer should reproduce a sample before delivery. Lock the submitted version and route any later correction through a change log identifying all dependent outputs.
Manage questions in a single findings register rather than scattered email threads. Give each request an identifier, exact issue, affected requirement or variable, owner, due date, response, supporting file and status. Answer the question asked, cite contemporary evidence and distinguish factual correction from interpretation. Never backdate or manufacture a record. If new evidence changes quantity or scope, recalculate and identify superseded files. The ENAC-accredited verification body decides whether its finding is resolved under its procedures.
Close verification without confusing stages
Plan site visits and samples around traceability. Ensure safe access, knowledgeable escorts, asset identifiers, originals and measurement points are available without staging a misleading condition. Reconcile sampled items back to the complete population and document legitimate absences or replacements. Do not treat a successful sample as permission to ignore known exceptions elsewhere. If the verifier expands a sample or requests another calculation, update the register and assess schedule impact rather than supplying uncontrolled extracts from different dossier versions.
On receipt of the verification output, check entity names, sites, action references, methodology version, quantified savings, qualifications and annexes against the submitted package. Resolve clerical errors through the body’s controlled process and preserve the final signed output with the closed findings register. Do not describe an internal review as verified, or a verification opinion as administrative validation. The authorised CAE scheme participant can then use the verified package in the applicable process, where competent authorities retain their own decisions.