I-DEV0419: Deviation for adjustment of the monitoring and calculation of baseline emissions

The deviation is for the first monitoring period (23/12/2009 to 31/01/2011) of the registered CDM project(Ref 2859: Houpayan Hydropower Project in Qiubei County Yunnan Province, China).
Description of noncompliance with monitoring plan (MP)
As per the registered monitoring plan, one main meter and one backup meter would be installed to measure the parameters EGPJ to Grid ,y and Grid to PJ,y, the net electricity supplied to the grid by the Project is calculated as:
EGy=EGPJ to Grid ,y-EG Grid to PJ,y
Where:
EGy:net electricity supplied to the grid by the Project
EGPJ to Grid ,y: electricity exported to the grid by the Project
EG Grid to PJ,y: electricity imported from the grid by the Project
The noncompliance is about the number of meters and the calculation method for net electricity supplied to the grid by the Project from 23/12/2009 to 25/03/2010 due to sharing the same output line with the other project(bada hydropower project).
The project was put into operation before the CDM registration. Two main meters were used for monitoring the baseline emission of the Project from 23/12/2009 to 25/03/2010, which was different from the registered PDD. The actual monitoring system 23/12/2009 to 25/03/2010 is shown in the following grid connection diagram.

As per the diagram, the electricity generated by the project is delivered to SCPG through Houxiao Line. M1 was installed at 123 Switch for monitoring the total amount of the exported and imported electricity of the project and bada hydropower project; M2 was installed at 124 Switch for monitoring the exported and imported electricity of Bada Hydropower Project. Both of M1 and M2 are the bidirectional electric energy meters with the accuracy of 0.2S.
Solution to the addressed issue
The monitored parameters during the period from 23/12/2009 to 25/03/2010 can be defined as:
EGTotal,export:electricity exported to the grid by the Project and bada hydropower project
EGTotal,import:electricity imported from the grid by the Project and bada hydropower project
EGother,export:electricity exported by bada hydropower project
EGother,import:electricity imported by bada hydropower project
The net electricity supplied to the grid by the Project is calculated as:
EGy= (EGTotal,export- EGTotal,import)-(EGother,export- EGother,import)

As the Project has been connected to the grid via another line since 26/03/2010, the current monitoring system is consistent with the description in the monitoring plan of the registered PDD and the methodology applied. Therefore, a revision of monitoring plan or the changes form the project activity is not necessary for the project activity.

With the deviation, Meter M1 and M2 were used as the main meters for the Project instead of one main meter and one backup meter in the registered PDD. The accuracy of the two meters is on the same accuracy level as required in the registered PDD. The net electrcity supplied to the grid was still used for baseline emissions calculation and it is confirmed that the new calculation approach is fully consistent with the applied methodology ACM0002 Version07.
BVC concludes that the deviation would not have impacts on determination of the emission reductions and is the most suitable way to calculate the emission reductions in context of the observed deviation during the on-site visit.