Biolite Solar Lighting Project in Malawi

Audit Analysis

A Gold Standard solar home-system project in Malawi with VVB-confirmed additionality and a quantified (zero) leakage deduction, but undermined by a project-specific baseline, assumed rather than measured usage rates, and a high volume of corrective actions (18 CARs) that signal documentation and data-quality weaknesses. The verified ERR for the first monitoring period tracks roughly 95% of the pro-rata ex-ante expectation, suggesting no material over-crediting, yet the contradictions between the validation and verification reports on total ERR and the shift from planned annual surveys to assumed usage introduce residual uncertainty.

Project Description

Red Flags

• ⚠Usage monitoring method is 'assumed' in the monitoring report despite the PDD planning annual surveys — actual household usage is not being measured, creating over-crediting risk
• ⚠18 Corrective Action Requests and 11 Clarification Requests were raised during verification, indicating significant data-quality and documentation gaps in the monitoring report
• ⚠Baseline kerosene usage was revised from 61% to 31.54% based on survey data, a near-doubling of the assumed substitution rate that materially affects the ERR calculation
• ⚠Total ERR figures differ between the validation report (93,150) and the verification report (38,116), and the crediting period dates differ between the PDD (2020–2025) and the verification report (2022–2027), creating ambiguity about the project's true scope and timeline

Credit Vintages