In your basic.cfg file there is a section entitled "Renown". Under this, change the
RenownReachGridObjCompleted= XXXXXX to whatever value you please. In my case I set it up as 55,000. This means I don't have to spend 24 hours patrolling the grid but from the moment I
reach it, I automatically get 55,000 renown points.
[RENOWN]
RenownReachGridObjCompleted=55000
RenownPatrolGridObjCompleted=5500
CompletedPatrol=100
NEUTRAL=-1
ALLIED=1
AXIS=-10
WrongShipSunk=-50
FirstRankRenown=1000
SecondRankRenown=3500
EndCampaign=-5000