diff --git a/hub/catalog_factories/catalog.py b/hub/catalog_factories/catalog.py
index a7e3cd85..8f92625c 100644
--- a/hub/catalog_factories/catalog.py
+++ b/hub/catalog_factories/catalog.py
@@ -8,7 +8,7 @@ Project Coder Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
 
 class Catalog:
   """
-  Catalogs base class not implemented instance of the Catalog base class,
+  Catalogs base class
   catalog_factories will inherit from this class.
   """
 
diff --git a/hub/catalog_factories/costs_catalog_factory.py b/hub/catalog_factories/costs_catalog_factory.py
index 51bafe17..de341991 100644
--- a/hub/catalog_factories/costs_catalog_factory.py
+++ b/hub/catalog_factories/costs_catalog_factory.py
@@ -13,7 +13,7 @@ from hub.catalog_factories.cost.montreal_custom_catalog import MontrealCustomCat
 Catalog = TypeVar('Catalog')
 
 
-class CostCatalogFactory:
+class CostsCatalogFactory:
   """
   CostsCatalogFactory class
   """
diff --git a/hub/catalog_factories/data_models/cost/operational_cost.py b/hub/catalog_factories/data_models/cost/operational_cost.py
index dd4b4715..b514d034 100644
--- a/hub/catalog_factories/data_models/cost/operational_cost.py
+++ b/hub/catalog_factories/data_models/cost/operational_cost.py
@@ -24,7 +24,7 @@ class OperationalCost:
   def fuels(self) -> List[Fuel]:
     """
     Get fuels listed in capital costs
-    :return: [FUEL]
+    :return: [Fuel]
     """
     return self._fuels
 
diff --git a/hub/catalog_factories/data_models/usages/ocupancy.py b/hub/catalog_factories/data_models/usages/occupancy.py
similarity index 100%
rename from hub/catalog_factories/data_models/usages/ocupancy.py
rename to hub/catalog_factories/data_models/usages/occupancy.py
diff --git a/hub/catalog_factories/data_models/usages/usage.py b/hub/catalog_factories/data_models/usages/usage.py
index 4ed0db2f..25a54d5f 100644
--- a/hub/catalog_factories/data_models/usages/usage.py
+++ b/hub/catalog_factories/data_models/usages/usage.py
@@ -8,7 +8,7 @@ from typing import Union
 
 from hub.catalog_factories.data_models.usages.appliances import Appliances
 from hub.catalog_factories.data_models.usages.lighting import Lighting
-from hub.catalog_factories.data_models.usages.ocupancy import Occupancy
+from hub.catalog_factories.data_models.usages.occupancy import Occupancy
 from hub.catalog_factories.data_models.usages.thermal_control import ThermalControl
 from hub.catalog_factories.data_models.usages.domestic_hot_water import DomesticHotWater
 
diff --git a/hub/catalog_factories/usage/comnet_catalog.py b/hub/catalog_factories/usage/comnet_catalog.py
index fb6f2b00..1d527573 100644
--- a/hub/catalog_factories/usage/comnet_catalog.py
+++ b/hub/catalog_factories/usage/comnet_catalog.py
@@ -14,7 +14,7 @@ from hub.catalog_factories.catalog import Catalog
 from hub.catalog_factories.data_models.usages.appliances import Appliances
 from hub.catalog_factories.data_models.usages.content import Content
 from hub.catalog_factories.data_models.usages.lighting import Lighting
-from hub.catalog_factories.data_models.usages.ocupancy import Occupancy
+from hub.catalog_factories.data_models.usages.occupancy import Occupancy
 from hub.catalog_factories.data_models.usages.domestic_hot_water import DomesticHotWater
 from hub.catalog_factories.data_models.usages.schedule import Schedule
 from hub.catalog_factories.data_models.usages.thermal_control import ThermalControl
diff --git a/hub/catalog_factories/usage/nrcan_catalog.py b/hub/catalog_factories/usage/nrcan_catalog.py
index fda4ac40..7530081f 100644
--- a/hub/catalog_factories/usage/nrcan_catalog.py
+++ b/hub/catalog_factories/usage/nrcan_catalog.py
@@ -15,7 +15,7 @@ from hub.catalog_factories.catalog import Catalog
 from hub.catalog_factories.data_models.usages.appliances import Appliances
 from hub.catalog_factories.data_models.usages.content import Content
 from hub.catalog_factories.data_models.usages.lighting import Lighting
-from hub.catalog_factories.data_models.usages.ocupancy import Occupancy
+from hub.catalog_factories.data_models.usages.occupancy import Occupancy
 from hub.catalog_factories.data_models.usages.domestic_hot_water import DomesticHotWater
 from hub.catalog_factories.data_models.usages.schedule import Schedule
 from hub.catalog_factories.data_models.usages.thermal_control import ThermalControl
diff --git a/tests/test_city_merge.py b/tests/test_city_merge.py
index 08f8b2f5..f5c1474a 100644
--- a/tests/test_city_merge.py
+++ b/tests/test_city_merge.py
@@ -72,14 +72,14 @@ class TestCityMerge(TestCase):
       for surface in building.surfaces:
         if surface.global_irradiance:
           merged_city_building_total_radiation += surface.global_irradiance[cte.YEAR].iloc[0, 0]
-    self.assertEqual(447383461, merged_city_building_total_radiation)
+    self.assertEqual(438405954, merged_city_building_total_radiation)
     merged_city = par_city.merge(full_city)
     merged_city_building_total_radiation = 0
     for building in merged_city.buildings:
       for surface in building.surfaces:
         if surface.global_irradiance:
           merged_city_building_total_radiation += surface.global_irradiance[cte.YEAR].iloc[0, 0]
-    self.assertEqual(447383461, merged_city_building_total_radiation)
+    self.assertEqual(438405954, merged_city_building_total_radiation)
 
     for building in par_city.buildings:
       for surface in building.surfaces:
@@ -91,12 +91,12 @@ class TestCityMerge(TestCase):
       for surface in building.surfaces:
         if surface.global_irradiance:
           merged_city_building_total_radiation += surface.global_irradiance[cte.YEAR].iloc[0, 0]
-    self.assertEqual(202699159, merged_city_building_total_radiation)
+    self.assertEqual(189336013, merged_city_building_total_radiation)
     merged_city = par_city.merge(full_city)
     merged_city_building_total_radiation = 0
     for building in merged_city.buildings:
       for surface in building.surfaces:
         if surface.global_irradiance:
           merged_city_building_total_radiation += surface.global_irradiance[cte.YEAR].iloc[0, 0]
-    self.assertEqual(202699159, merged_city_building_total_radiation)
+    self.assertEqual(189336013, merged_city_building_total_radiation)
 
diff --git a/tests/test_costs_catalog.py b/tests/test_costs_catalog.py
index 1dd25021..8f873850 100644
--- a/tests/test_costs_catalog.py
+++ b/tests/test_costs_catalog.py
@@ -7,13 +7,13 @@ Code contributors: Pilar Monsalvete Alvarez de Uribarri pilar.monsalvete@concord
 """
 
 from unittest import TestCase
-from hub.catalog_factories.costs_catalog_factory import CostCatalogFactory
+from hub.catalog_factories.costs_catalog_factory import CostsCatalogFactory
 
 
 class TestCostsCatalog(TestCase):
 
   def test_costs_catalog(self):
-    catalog = CostCatalogFactory('montreal_custom').catalog
+    catalog = CostsCatalogFactory('montreal_custom').catalog
     catalog_categories = catalog.names()
     self.assertIsNotNone(catalog, 'catalog is none')
     content = catalog.entries()