diff --git a/etrago/tools/plot.py b/etrago/tools/plot.py
index 174b0d13..5d28a281 100644
--- a/etrago/tools/plot.py
+++ b/etrago/tools/plot.py
@@ -1149,7 +1149,7 @@ def calc_ac_loading(network, timesteps):
     """
 
     loading_lines = mul_weighting(network, network.lines_t.p0).loc[
-                network.snapshots[timesteps]].sum()
+                network.snapshots[timesteps]].abs().sum()
 
     if not network.lines_t.q0.empty: