Understanding CDM Methodologies - SuSanA

Box 13: Exclusion of immaterial parts of a multinational grid
Grids providing
less than 1% of
Project Grid can
be neglected
Data collection becomes cumbersome especially when the project power plant is
connected to a multinational grid and the project boundary has to include all the
CES connected to the PES. A request for revision of ACM0002 (version 06) sought
to exclude parts of a multinational grid from which the PES imports power less
than or equal to 1.0% of the total power consumption of the PES (i.e. immaterial
parts of the multinational grid) ?? .The request for revision was accepted by EB 31
and the revision is to be incorporated in the next version of ACM0002.
Renewable Power
Generation
Determines
Energy Baseline
Baseline Scenario and Additionality
The baseline is the annual power generated by the renewable unit multiplied
by the emission coefficient of the grid that the project power plant is
connected to.
Additionality of the project shall be demonstrated by application of the latest
version of the “Tool for the demonstration and assessment of additionality”
(additionality tool).
Baseline Emissions
ACM0002 employs the CM approach for calculating the baseline emission
factor to take into account the effects on OM and BM caused by the project.
Operating Margin
Operating Margin ACM0002 specifies four different methods to calculate the OM emission
factor: (i) dispatch data analysis, (ii) simple OM, (iii) simple adjusted OM, and
(iv) average OM. These methods can yield strongly different results and thus
the choice of method is crucial for determination of CER volume.
Emission Factor
for Electricity
Imports from
other Grids
Dispatch Analysis:
Emission Factor of
top 10% of Power
Plants dispatched
to the Grid
In any case, net electricity imports from the CES within the same host
country(ies) shall be considered as follows:
• 0 tCO 2
/MWh; or
• The emission factor(s) of the specific power plant(s) from which power is
imported, only if the specific plants are clearly known; or
• The average emission rate of the exporting grid, only if the net imports do
not exceed 20% of the total generation in the PES; or
• The emission factor of the exporting grid determined based on the CM
approach, if the net imports exceed 20% of the total generation in the
PES.
For imports from the CES located in another country, the emission factor shall
be assumed to be 0 tCO 2
/MWh.
Dispatch data analysis: The dispatch data analysis should be the first
choice if the necessary data (i.e. hourly dispatch data and dispatch order)
is available. In this case, the OM emission factor is calculated as the hourly
generation-weighted average emissions per power unit (tCO 2
/MWh) of
the set of power plants falling within the top 10% of the grid system
dispatch order. Where the dispatch data analysis cannot be applied, project
participants shall select any of the other three options subject to the
226
See AM_REV_0027.
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