diff --git a/costs/total_operational_incomes.py b/costs/total_operational_incomes.py
index 474d26b..f1cab2c 100644
--- a/costs/total_operational_incomes.py
+++ b/costs/total_operational_incomes.py
@@ -28,15 +28,16 @@ class TotalOperationalIncomes(CostBase):
     :return: pd.DataFrame
     """
     building = self._building
+    archetype = self._archetype
     if cte.YEAR not in building.onsite_electrical_production:
       onsite_electricity_production = 0
     else:
-      onsite_electricity_production = building.onsite_electrical_production[cte.YEAR][0] / 1000
+      onsite_electricity_production = building.onsite_electrical_production[cte.YEAR][0]
 
     for year in range(1, self._configuration.number_of_years + 1):
       price_increase_electricity = math.pow(1 + self._configuration.electricity_price_index, year)
       # todo: check the adequate assignation of price. Pilar
-      price_export = 0.075  # archetype.income.electricity_export
+      price_export = archetype.income.electricity_export * cte.WATTS_HOUR_TO_JULES*1000 # to account for unit change
       self._yearly_operational_incomes.loc[year, 'Incomes electricity'] = (
           onsite_electricity_production * price_export * price_increase_electricity
       )