What metering and calibration rules apply to a CCTS offset project's monitoring plan?
Readings that change all the time, such as fuel used or power generated, must be measured continuously. Fixed values like emission factors are updated at least once a year. Meters must meet BIS, national or IEC standards and be calibrated by an NABL accredited lab, and data is kept for two years after the last issuance.
The requirements in the project standard
- Continuously varying data (fuel inputs, heat or electricity produced, gas captured): measured continuously and recorded at set intervals.
- Generally constant data (emission factors, calorific values, efficiencies): taken from published sources at least once a year, unless the methodology asks for more.
- Measuring equipment certified to BIS, national or IEC standards.
- Calibration by an NABL accredited organisation.
- Uncertain readings cross-checked against other data sources.
- Methods, accuracy, intervals, responsible people and QA/QC procedures written into the plan.
Record keeping
All monitored data is archived electronically for two years after the crediting period or the last issuance of credits, whichever is later.
Where invoices help
Fuel supplier invoices and electricity bills are the usual cross-check for meter readings, and BEE's fossil fuel tool prefers calorific values printed by the supplier on the invoice.
What Senseible does here
Senseible keeps fuel and electricity invoices as dated, fingerprinted monthly records, the consumption data a project's monitoring report and its verifier will ask to trace.
Sources: BEE, Detailed Procedure for Offset Mechanism under CCTS, Version 1.0 (effective 27 March 2025)
Last reviewed 2026-10-23. Section B4.9 of the scanned procedure, read on 23 October 2026.