Energy density profiles over time, relative to the non-driven case (ND). The solid lines correspond to the results for the red noise driver (RN) and the dashed lines for the detrended driver (DT). The total Poynting energy input (black lines) from z = 7 Mm and z = 193 Mm and the internal energy (red lines) for the coronal part of the loop (x ∈ [ − 6, 6] Mm, y ∈ [0, 4] Mm and z ∈ [7, 193] Mm) are shown.