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4.4 Baseline emissions
BE y , baseline emissions in year y (tCO 2 e), is estimated as follows:
BE y
= (MD Project,y
– MD BL,y
) • GWP CH4 + EF LFG,y
• CEF elec,BL,y + ET LFG,y • CEF ther,BL,y
(1) (2) (3) (4) (5) (6) (7)
(1) MD project,y The amount of methane that would have been destroyed/combusted during the
year (tCH 4 ) in project scenario
Figure A-1 shows how MD project,y is to be determined ex post by metering the actual quantity of
methane captured and destroyed once the project activity is operational.
CH4
Landfill
LFGtotal,y
(a) MDtotal,y
LFGther,y
LFGPL,y
LFGelec,y
LFGflare,y
The lower of
(a) or (b)
should be
chosen as
MDproject,y
Boiler Pipe Power Plant Flare
MDther,y
+ MDPL,y + MDelec,y + MDflared,y =
(b) The sum
: monitored : calculated
Here, MD total,y , MD flared,y , MD elec,y , MD PL,y and MD ther,y are calculated based on monitored flow of landfill gas at
different points, i.e. LFG total,y , LFG flare,y , LFG elec,y , LFG PL,y and LFG ther,y , using the following formula:
MD total,y = LFG total,y • W CH4,y • D CH4
MD elec,y = LFG elec,y • w CH4,y • D CH4
MD ther,y = LFG ther,y • w CH4,y • D CH4
MD PL,y = LFG PL,y • w CH4,y • D CH4
MD flared,y = (LFG flare,y • w CH4,y • D CH4 ) – (PE flare,y /GWP CH4 )
w CH4,y : Average methane fraction of the landfill gas as measured during the year (in m 3 CH 4 / m 3 LFG)
D CH4 : Methane density (tCH 4 /m 3 CH 4 )
PE flare,y : Project emissions from flaring of residual gas stream in year y (tCO 2 e). Determined by following
the procedure described in the “Tool to determine project emissions from flaring gases containing
Methane” [EB28, Annex 13].
Figure A-1 Flow diagram of MD project,y calculation
MD project,y should be chosen as the lower value of MD total,y or the sum of MD flared,y , MD elec,y , MD PL,y and
MD ther,y . When the sum of MD flared,y , MD elec,y , MD PL,y and MD ther,y is lower, then the working hours of the
energy plant(s) and the boiler(s) should be monitored and no emission reduction could be claimed
for methane destruction in the energy plant or the boiler when they are not working.
(2) MD BL,y The amount of methane that would have been destroyed/combusted during the year
in the absence of the project (tCH 4 ) due to regulatory and/or contractual requirement
(a) In the case where the MD BL,y is given/defined in the regulation and/or contract as a quantity
that quantity will be used.
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