TAIHE COUNTY BIOGAS POWER GENERATION AND ORGANIC FERTILIZER PROJECT

Audit Analysis

A registered VCS biogas project in China with VVB-confirmed additionality and a grievance mechanism, but undermined by 16 material findings (including calculation errors and unit inconsistencies), a massive gap between ex-ante and verified emissions reductions (only ~4% of pro-rata expectation delivered in year one), and low extraction confidence across the document set. The under-delivery is conservative for buyers but raises questions about the robustness of the original baseline estimate.

Project Description

Red Flags

• ⚠Verified ERR of 4,026 tCO2e is only ~3.9% of the pro-rata expectation (102,700 tCO2e) for the first monitoring year, suggesting the ex-ante estimate was highly optimistic or the plant operated far below design capacity
• ⚠16 material findings in the verification report, including incorrect GWP values (AR6 used instead of AR5), flare efficiency calculation errors, unit inconsistencies, and missing SPECflare values — all closed but indicative of weak initial documentation quality
• ⚠FPIC was not conducted and benefit sharing is contradicted between the PDD (described) and the validation report (not described), leaving community engagement status unclear
• ⚠No buffer pool percentage or permanence mechanism is stated in the available documents, leaving reversal risk unaddressed despite the 10-year crediting period
• ⚠Minimum extraction confidence is rated low, meaning at least one key document was poorly readable, reducing reliability of the extracted record

Credit Vintages