CEMEX Colombia: Biomass project at Caracolito cement plant.

Audit Analysis

A CDM biomass energy project at a CEMEX cement plant with VVB-confirmed additionality and no reversal risk, but undermined by a project-specific baseline, a grid emission factor from 2006, numerous material findings questioning baseline validity and monitoring completeness, and a verified ERR that covers only about 29% of the pro-rata expectation for the elapsed monitoring period. The project is functional but carries moderate over-crediting risk and documentation gaps.

Project Description

Red Flags

• ⚠Verified ERR of 21,009 tCO2e for the 6-month monitoring period is only ~29% of the pro-rata expectation (~73,400 tCO2e) derived from the 1,467,987 tCO2e lifetime PDD estimate, suggesting the ex-ante baseline may be overly optimistic or the project is underperforming
• ⚠Multiple material findings in the verification report question the validity of the baseline scenario (Scenario 1: continuation of current practice), the prevailing practice barrier, and whether fossil fuel costs were truly affected by the new biomass investment
• ⚠Grid emission factor of 0.439 tCO2/MWh is from 2006 and has not been updated, potentially overstating the displacement benefit
• ⚠Leakage is described as 'quantified' in the verification report but the actual deduction percentage is not stated in any available document
• ⚠Crediting period dates differ between the 2008 validation report (2008-07-01 to 2018-06-30) and the 2012 monitoring report (2009-04-01 to 2019-03-31), indicating a period amendment that is not fully transparent in the record

Credit Vintages