Asahan 1 Hydroelectric Power Plant 2 x 90 MW

Audit Analysis

The Asahan 1 hydroelectric project (2 × 90 MW, CDM ACM0002) is a well-understood grid-displacement design with VVB-confirmed additionality and no inherent reversal risk. However, six corrective action requests, a contradiction in the baseline method description, an unresolved leakage justification discrepancy, and an internal inconsistency in the claimed ERR figures within the same monitoring report significantly undermine confidence in the data quality and documentation rigor.

Project Description

Red Flags

• ⚠Six corrective action requests (CARs) in the monitoring report cover missing calculation sheets, PDD inconsistencies, meter location gaps, and unaddressed backup-generator emissions — indicating material documentation deficiencies.
• ⚠The monitoring report (2021) lists the claimed ERR as both 29,606 and 1,026,394 tCO₂e in the same document, an internal contradiction that cannot be reconciled without further clarification.
• ⚠Leakage treatment is described as 'deemed negligible' in the 2018 validation report but 'not addressed' in the 2021 monitoring report, leaving the justification status ambiguous.
• ⚠The stated monitoring period of only 9 days (2018-03-01 to 2018-03-09) is atypical for a 180 MW hydro plant and raises questions about the representativeness of the verified ERR of 1,021,075 tCO₂e.

Credit Vintages