Investor Presentaiton
Clean Transportation Impact Calculation Methodology
1.- METHODOLOGICAL BASES
To quantify the emissions avoided by the use of regular
public passenger transport in relation to hybrid or electric
buses and rail modes (metro and rail concessions), it is
assumed that if these trips had not been made by public
transport, they would have been made by using private
vehicles.
In this way:
Emissions Avoided = Emissions generated by the private
vehicle Emissions generated by public transport
To calculate the emissions that would have been produced
by the travel of passengers in private vehicles, the number of
passenger-km(1) that have used public transport in electric or
hybrid modes will be multiplied by an emission factor based
on the circulating fleet of passenger cars in the Community
of Madrid, according to data from the DGT for 2020 (latest
available). To calculate the emissions generated by trips
made by public transport users in electric or hybrid modes,
the energy consumed in these trips is multiplied by the
emission factors mentioned in section 5.
2.- YEAR OF CALCULATION: 2022
3.- SCOPE:
Road modes:
EMT of Madrid (hybrid and pure electric vehicles)
Road concessions in the rest of the Community of
Madrid (hybrid and pure electric vehicles)
Railway modes:
Metro de Madrid (Subway)
Railway
Tramway)
concessions (TFM, MLM, MLO, Parla
4.- ACTIVITY DATA
Road modes:
Vehicle characteristics (Euro standard, fuel type)
Fuel/electrical energy consumption of vehicle fleets or,
alternatively, kilometers traveled per year
Railway modes:
Electricity consumption
5.- EMISSION FACTORS
CO2 emission factors for fossil fuels published by the
Spanish Office of Climate Change (OECC), year 2022
Diesel fuel B7: 2.519 gr CO2eq/liter
CNG: 2.783 gr CO2eq/kg
Electricity emission factors year 2022. (Published by
the CNMC):
marketer without REC 2022: 273 gr CO2eq/kWh
marketer with REC: 0 gr CO2eq/kWh
- Average private vehicle emissions: Prepared by the authors
based on the number of
cars in circulation in the Community of Madrid, according to
Dirección General de Trafico data for 2020 (latest available).
Average private vehicle (occupancy 1.2
passengers): 146 g CO2eq/km
(1) Travelers-km = No. of trips x Average trip length
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