diff --git a/urbs/model.py b/urbs/model.py
index eaaacd4c..a78a7834 100644
--- a/urbs/model.py
+++ b/urbs/model.py
@@ -260,11 +260,11 @@ def create_model(data, dt=1, timesteps=None, objective='cost',
         within=pyomo.NonNegativeReals,
         doc='Power flow (MW) through process')
     m.e_pro_in = pyomo.Var(
-        m.tm, m.pro_tuples, m.com,
+        m.tm, m.pro_input_tuples,
         within=pyomo.NonNegativeReals,
         doc='Power flow of commodity into process (MW) per timestep')
     m.e_pro_out = pyomo.Var(
-        m.tm, m.pro_tuples, m.com,
+        m.tm, m.pro_output_tuples,
         within=pyomo.NonNegativeReals,
         doc='Power flow out of process (MW) per timestep')
 
diff --git a/urbs/output.py b/urbs/output.py
index 3c6f5d4b..166c4c83 100644
--- a/urbs/output.py
+++ b/urbs/output.py
@@ -129,13 +129,13 @@ def get_timeseries(instance, stf, com, sites, timesteps=None):
         created = pd.DataFrame(index=timesteps)
 
     consumed = get_entity(instance, 'e_pro_in')
-    consumed = consumed.xs([stf, com], level=['stf', 'com']).loc[timesteps]
     try:
+        consumed = consumed.xs([stf, com], level=['stf', 'com']).loc[timesteps]
         consumed = consumed.unstack(level='sit')[sites].fillna(0).sum(axis=1)
         consumed = consumed.unstack(level='pro')
         consumed = drop_all_zero_columns(consumed)
     except KeyError:
-        consumed = pd.DataFrame(index=timesteps)
+        consumed = pd.DataFrame(index=timesteps[1:])
 
     # TRANSMISSION
     other_sites = (get_input(instance, 'site')