Highveld Air Quality - Wesselton project

Audit Analysis

The Wesselton coal-ignition efficiency project has a confirmed additionality test and no reversal events, but is undermined by an extensive list of material findings (30+ items), a project-specific baseline, a 0% leakage deduction with contradictory justifications across monitoring reports, and a low extraction confidence rating. The verified emission reductions for the 2017–18 period represent roughly 52% of the pro-rata lifetime expectation, indicating conservative delivery, yet the underlying data quality issues (household count revised down 44%, season-days calculation error, attendance record corrections) raise material concerns about baseline accuracy and MRV robustness.

Project Description

Red Flags

• ⚠Household count revised from 17,311 to 9,714 (a 44% reduction) with supporting census evidence only provided after VVB challenge, casting doubt on the original baseline denominator.
• ⚠Leakage justification is contradictory: the 2018 monitoring report states leakage was 'quantified' while the 2015 monitoring report states it was 'deemed negligible', yet the deduction in both cases is 0%.
• ⚠Total ERR claimed in the 2018 monitoring report (1,412 tCO2) is lower than the verified figure in the 2018 verification report (3,145 tCO2), an inversion that suggests calculation or reporting errors in the project's own monitoring.
• ⚠Season-days calculation error (winter 123, summer 242, total 365) was identified and corrected by the VVB, indicating a fundamental arithmetic flaw in the original emission-reduction methodology.
• ⚠Min extraction confidence is rated low, meaning at least one key document was poorly readable, reducing confidence in the completeness of the evidence base.

Credit Vintages Exhausted