Dissipation of electromagnetic energy and particle acceleration. Left column: electromagnetic (top panel) and particle kinetic (bottom panel) energy flux through a surface extending up to a radius r (left axis) as a function of time and for a thin disk with a BH spin a = 0.99. Right column: slices at constant time t = 150 r_g/c (top panel) and constant radius r = 26 r_g (bottom panel) of the fluxes. The dashed lines in the upper panel are the time-averaged profiles. The solid, dashed, and dotted yellow lines show the event horizon, the distance to the separatrix footpoint, and the distance to the Y point, respectively.