Why “assurance-grade” suddenly matters
For years, sustainability figures were largely self-reported. That era is ending. Under regimes such as the EU’s CSRD and California’s SB 253, disclosures move from limited assurance toward reasonable assurance — a materially higher bar where an external auditor must be able to verify the numbers, not just review them.
When that happens, the question stops being “what did you report?” and becomes “show me where this number came from.” For a solar or Scope 2 claim, the number in question is generation: how many units each system actually produced, per site, over time.
What auditors actually ask for
Assurance rests on traceability. In practice, that means a record that can answer:
- Where did this generation figure originate — which system, which period, which device?
- Can the figure be reproduced from a source record, not just a dashboard total?
- Is the record independent, or is it the same vendor grading its own hardware?
- Has the record been changed since — and if so, is that change logged rather than silently overwritten?
Why an inverter app is not assurance-grade
An inverter’s own app is a monitor, not an evidence system. It reports a plant-level total for one brand, from the vendor’s own cloud, with no independent, per-string record behind it — and if a reading is corrected, you rarely see how. That is fine for a quick health check and weak for an audit, where the whole point is an independent, reproducible trail.
| Property | Inverter app | Assurance-grade source layer |
|---|---|---|
| Granularity | Plant / inverter total | Per string |
| Independence | The vendor’s own cloud | Independent of installer and manufacturer |
| Multi-brand | One brand only | Every major brand in one record |
| Traceability | A dashboard number | A write-once, reproducible record |
Where BijliBachao fits — the auditable source layer
BijliBachao’s Solar Performance Cloud (SPC) is built to be that source layer: it inspects each plant string by string, independently of the installer and the manufacturer, and keeps an auditable record of what was generated across every major inverter brand in one place. That is the traceable generation evidence a reasonable-assurance Scope 2 claim or a REC issuance needs.
Two honest limits. SPC’s records are “aligned to” monitoring standards such as IEC 61724-1 — that is not a certification of your report, and SPC does not issue an audit opinion or a certificate. What it provides is the independent, per-string, reproducible generation record that turns an unverifiable claim into one an auditor can actually check.
