Bundling of household biogas plants for thermal energy applications
GS-3500 ↗ · current registry ID: GS11539
#41of 111 in Biogas#251of 387 in India#256of 426 in Gold Standard (GS)#13of 26 in AMS-I.E
Audit Analysis
A Gold Standard household biogas bundling project in India with VVB-verified additionality and a quantified 5% leakage deduction, but undermined by a project-specific baseline, unaddressed reversal risk, and numerous material findings including emission calculation inconsistencies and missing supporting documents. The project delivered approximately 100% of its pro-rata expected emissions reductions for the monitoring period, but data reliability concerns from multiple contradictions and corrective actions temper confidence in the claims.
Red Flags
- Reversal events explicitly noted as 'not addressed' in a biogas project where plant failure or feedstock substitution is a realistic risk, and no buffer pool percentage is stated in available documents
- Five corrective action requests and four clarification requests in the verification report, including inconsistencies in emission values, missing Sustaincert report, missing survey records, and an ex-ante value mismatch with the registered PDD
- Contradiction in leakage deduction between the 2024 verification report (0.95%) and the 2025 verification report (5%), and a shift in FNRB method from local field measurement to national default, suggesting the baseline parameters were revised between reporting cycles
- Crediting period dates differ between the PDD (2021-07-15 to 2026-07-14) and the verification report (2021-03-01 to 2026-02-28), creating ambiguity about the exact crediting window
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2021 | 14,442 | 14,442 | 0 | |
| 2022 | 35,294 | 35,294 | 0 | |
| 2023 | 35,118 | 5,232 | 29,886 | |
| 2024 | 34,840 | 0 | 34,840 | |
| 2025 | 20,017 | 0 | 20,017 | |
| Total | 139,711 | 54,968 | 84,743 |
Risk Indicators
VVB-verified combined test
Reversal risk unaddressed, no buffer pool stated
5% quantified deduction with justification
Project-specific baseline, reassessment timing not stated
FPIC, grievance mechanism, and safeguards documented
CORSIA and CCP status not stated
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