CPA # 1 Improved Cooking Stoves for Nigeria, GS 1162

Audit Analysis

This Gold Standard improved cooking stove project in Nigeria has a VVB-verified combined additionality test and a quantified 5% leakage deduction, but suffers from notable gaps in permanence (no buffer pool, reversal events unaddressed) and a project-specific baseline with no recorded reassessment date. Multiple contradictions across documents—particularly on ERR figures, crediting period, and leakage treatment—reduce confidence in the data record. The verified-to-claimed ratio of roughly 95% for the most recent comparable period is reassuring, but the absence of usage-rate data and CORSIA/CCP status leaves residual over-crediting risk.

Project Description

Red Flags

• ⚠Crediting period differs between the PDD (2011-03-29 to 2021-03-28) and the 2020 verification report (2011-11-10 to 2018-11-09), creating ambiguity about the valid project lifetime and the basis for ex-ante estimates.
• ⚠Reversal events are explicitly 'not addressed' and no buffer pool percentage is stated, leaving permanence risk for cooking stoves (discarded, replaced with inefficient units) unquantified.
• ⚠ERR figures conflict across documents: the 2020 verification report cites 66,368 tCO₂e while the 2021 monitoring report cites 28,201 tCO₂e for claimed emissions reductions, and the 2013 monitoring report shows only 2,376 tCO₂e verified—making it difficult to confirm a consistent ex-ante baseline.
• ⚠Leakage treatment is contradictory: the 2015 verification report records it as 'not addressed' while the 2021 monitoring report records it as 'quantified'; the 5% deduction in the merged record is attributed to the later document but the earlier gap is unexplained.

Credit Vintages