Nazava Water Filter Project

Audit Analysis

The Nazava Water Filter Project is a Gold Standard avoidance-type project in Indonesia with VVB-confirmed additionality and a quantified 5% leakage deduction, but it carries a heavy burden of 12 material findings and 13 corrective actions that raise serious data-quality concerns. The verified emission reductions for the latest monitoring period exceed the pro-rata ex-ante expectation, yet the project's claimed figure is roughly double that expectation, creating a notable over-claiming gap. Low extraction confidence and multiple cross-document contradictions further erode confidence in the underlying data.

Project Description

Red Flags

• ⚠12 material findings and 13 corrective actions in the 2024 verification report, including double-counting in the sales database, missing double-counting demonstration, inconsistent site coordinates, and an error in the ex-ante emission-reduction estimate
• ⚠Claimed ERR of 60,682 tCO2e is approximately 200% of the pro-rata ex-ante expectation (~30,300 tCO2e) for the 14-month monitoring period, while verified ERR is only 63% of the claimed figure
• ⚠Minimum extraction confidence rated 'low', indicating at least one key document was poorly readable, undermining reliability of the extracted data
• ⚠Seven contradictions across documents, including a shift in FNRB method from national default (2023) to local field (2024) and a change in leakage deduction from 0.95% (2021) to 5% (2024)

Credit Vintages