Work vehicle comprising: - an internal combustion engine, which is adapted to generate mechanical energy to drive one or more components of said work vehicle and/or coupled to said work vehicle; - an electric machine, which is operatively connected to said internal combustion engine; and - electric energy storage means electrically connected to said electric machine; said work vehicle comprising and/or being configured to be coupled to one or more electric implements powered by electric energy; said electric machine being settable to: - a first mode, in which said electric machine is driven by said internal combustion engine and works, in use, as a generator adapted to generate electric energy; said electric energy generated by said electric machine being stored, in use, by said electric energy storage means and/or being used to power said electric implements; or - a second mode, in which said electric machine is powered by said electric energy storage means and works, in use, as a motor adapted to generate mechanical power to drive said one or more components; said electric energy storage means being adapted to power, in use, said electric implements with the electric energy stored therein; wherein said electric machine is set to said second mode when, in use, the mechanical power required to drive said one or more components is greater than a mechanical power threshold (P 0) said work vehicle being characterized in that said mechanical power threshold (P 0) is equal to a rated value of power (P E) generable by said internal combustion engine. - an internal combustion engine, which is adapted to generate mechanical energy to drive one or more components of said work vehicle and/or coupled to said work vehicle; - an electric machine, which is operatively connected to said internal combustion engine; and - electric energy storage means electrically connected to said electric machine; said work vehicle comprising and/or being configured to be coupled to one or more electric implements powered by electric energy; said electric machine being settable to: - a first mode, in which said electric machine is driven by said internal combustion engine and works, in use, as a generator adapted to generate electric energy; said electric energy generated by said electric machine being stored, in use, by said electric energy storage means and/or being used to power said electric implements; or - a second mode, in which said electric machine is powered by said electric energy storage means and works, in use, as a motor adapted to generate mechanical power to drive said one or more components; said electric energy storage means being adapted to power, in use, said electric implements with the electric energy stored therein; - a first mode, in which said electric machine is driven by said internal combustion engine and works, in use, as a generator adapted to generate electric energy; said electric energy generated by said electric machine being stored, in use, by said electric energy storage means and/or being used to power said electric implements; or - a second mode, in which said electric machine is powered by said electric energy storage means and works, in use, as a motor adapted to generate mechanical power to drive said one or more components; said electric energy storage means being adapted to power, in use, said electric implements with the electric energy stored therein; wherein said electric machine is set to said second mode when, in use, the mechanical power required to drive said one or more components is greater than a mechanical power threshold (P 0) said work vehicle being characterized in that said mechanical power threshold (P 0) is equal to a rated value of power (P E) generable by said internal combustion engine.