NetZero-003-Brejetuba

Audit Analysis

The Brejetuba biochar project has a VVB-verified investment additionality test and documented safeguards (FPIC, grievance mechanism), but suffers from significant gaps in permanence assurance (no buffer pool, reversal not addressed, corrective action to prohibit combustion in sales agreements) and multiple unquantified parameters (FNRB, usage rate, leakage deduction). The verified ERR for the first monitoring year appears to substantially exceed the pro-rata share of the lifetime estimate, raising over-crediting concerns.

Project Description

Red Flags

• ⚠Verified ERR (1,153.71 tCO2e) for the 2024-11 to 2025-10 monitoring period is approximately 5× the pro-rata expectation derived from the lifetime estimate of 1,145.88 tCO2e over the 5-year crediting period, suggesting potential over-crediting
• ⚠No buffer pool or reversal mechanism documented; the VVB issued a corrective action requiring sales agreements to explicitly prohibit combustion of the biochar, indicating an unmitigated permanence risk
• ⚠FNRB value, usage rate (assumed and verified), and grid emission factor are all absent from the extracted record, leaving key quantification parameters unverified
• ⚠Leakage is deemed negligible without a quantified deduction or detailed justification beyond a brief statement about moisture content and low fire incidence

Credit Vintages Exhausted