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Table 1 Primary energy (PE) factor (defined as the ratio between PE and delivered useful energy) and greenhouse gas (GHG) emissions factors for different energy carriers [55]

From: Exploring the potential for biomethane production by willow pyrolysis using life cycle assessment methodology

Energy carrier

Specification

PE factor (MJ-eq./MJ)

Emission (g CO2-eq./MJ)

Electricity

Nordic electricity mix (NORDEL)

2.01

20

Hard coal NORDEL

3.24

292

Fuel

Diesel, low-sulfur

1.35

0.01