Central Area of Sanmenxia City Geothermal Based Space Heating System

Audit Analysis

A Gold Standard geothermal space-heating project in Sanmenxia, China, with VVB-verified additionality and smart-meter monitoring, but significant gaps in permanence safeguards (no buffer pool, reversals unaddressed), a project-specific baseline, and a notable under-delivery of roughly 54% of the pro-rata ex-ante expectation. Multiple contradictions across documents and low extraction confidence further erode confidence in the data record.

Project Description

Red Flags

• ⚠No buffer pool or permanence safeguard identified; reversal events explicitly 'not addressed' in the verification report
• ⚠Leakage justification contradicts between documents: the verification report (Dec 2024) states 'deemed negligible' while the monitoring report (Jun 2024) references a 'quantified' approach, yet the deduction is 0% in both
• ⚠The monitoring report claims 79,090 tCO₂e for the 2021–2024 period, only ~54% of the pro-rata ex-ante expectation (~147,600 tCO₂e) derived from the PDD's 232,778 tCO₂e lifetime estimate, raising baseline-validity questions
• ⚠F-NRB value and method are not stated in any available document, preventing independent verification of the net renewable benefit calculation
• ⚠Min extraction confidence is rated 'low' and one evidence document is typed as 'unknown', undermining the reliability of the extracted record

Credit Vintages

No issuances recorded on the registry.