A drivetrain (300,400,500,600,700,800,900,1000,1100) for a wind turbine, said drivetrain comprising: a gearbox (136,302) comprising a housing (314,410) and an output shaft rotatably coupled within said housing, said gearbox further comprising at least one bearing positioned between said housing and said output shaft; a braking system operatively coupled to said gearbox, said braking system comprising a rotary component and a stationary component; a generator (132,304) comprising: a stator housing coupled to said housing; a stator coupled to said stator housing such that said stator is positioned radially inward from said stator housing and radially outward from said housing; and a rotor (108,300) coupled to said output shaft such that said rotor is positioned radially inward from said stator; and characterised by: an insulating ring, wherein said rotor (108,300) is coupled to said output shaft via a coupling disk such that a substantially insulated joint is defined between said coupling disk and said rotor (108,300) using said insulating ring; wherein said gearbox output shaft and said at least one bearing facilitate supporting said braking system rotary component; wherein said output shaft comprises an axially aft end (718,1118) including a plurality of gear teeth, said drivetrain further comprising an encoder operatively coupled to output shaft via a corresponding plurality of gear teeth, said encoder configured to determine a position of said rotor (108,308). a gearbox (136,302) comprising a housing (314,410) and an output shaft rotatably coupled within said housing, said gearbox further comprising at least one bearing positioned between said housing and said output shaft; a braking system operatively coupled to said gearbox, said braking system comprising a rotary component and a stationary component; a generator (132,304) comprising: a stator housing coupled to said housing; a stator coupled to said stator housing such that said stator is positioned radially inward from said stator housing and radially outward from said housing; and a rotor (108,300) coupled to said output shaft such that said rotor is positioned radially inward from said stator; and characterised by: a stator housing coupled to said housing; a stator coupled to said stator housing such that said stator is positioned radially inward from said stator housing and radially outward from said housing; and a rotor (108,300) coupled to said output shaft such that said rotor is positioned radially inward from said stator; and characterised by: an insulating ring, wherein said rotor (108,300) is coupled to said output shaft via a coupling disk such that a substantially insulated joint is defined between said coupling disk and said rotor (108,300) using said insulating ring; wherein said gearbox output shaft and said at least one bearing facilitate supporting said braking system rotary component; wherein said output shaft comprises an axially aft end (718,1118) including a plurality of gear teeth, said drivetrain further comprising an encoder operatively coupled to output shaft via a corresponding plurality of gear teeth, said encoder configured to determine a position of said rotor (108,308).