diff --git a/city_model_structure/attributes/surface.py b/city_model_structure/attributes/surface.py
index 53a2723b..5be1f94d 100644
--- a/city_model_structure/attributes/surface.py
+++ b/city_model_structure/attributes/surface.py
@@ -42,6 +42,14 @@ class Surface:
       self._name = uuid.uuid4()
     return self._name
 
+  @property
+  def id(self):
+    """
+    Surface id
+    :return str
+    """
+    return str(self.name)[:8]
+
   @property
   def swr(self):
     """
diff --git a/city_model_structure/city.py b/city_model_structure/city.py
index af213e7c..9085e28f 100644
--- a/city_model_structure/city.py
+++ b/city_model_structure/city.py
@@ -14,6 +14,7 @@ from pyproj import Transformer
 from city_model_structure.building import Building
 from city_model_structure.city_object import CityObject
 from helpers.geometry_helper import GeometryHelper
+from helpers.location import Location
 import math
 
 
@@ -32,12 +33,13 @@ class City:
     # todo: right now extracted at city level, in the future should be extracted also at building level if exist
     self._location = None
     self._country_code = None
+    self._climate_reference_city = None
+    self._climate_file = None
     self._latitude = None
     self._longitude = None
     self._time_zone = None
 
-  @property
-  def _get_location(self):
+  def _get_location(self) -> Location:
     if self._location is None:
       gps = pyproj.CRS('EPSG:4326')  # LatLon with WGS84 datum used by GPS units and Google Earth
       try:
@@ -57,7 +59,7 @@ class City:
     City country code
     :return: str
     """
-    return self._get_location[0]
+    return self._get_location().country
 
   @property
   def name(self):
@@ -65,7 +67,23 @@ class City:
     City name
     :return: str
     """
-    return self._get_location[1]
+    return self._get_location().city
+
+  @property
+  def climate_reference_city(self):
+    return self._climate_reference_city
+
+  @climate_reference_city.setter
+  def climate_reference_city(self, value):
+    self._climate_reference_city = value
+
+  @property
+  def climate_file(self):
+    return self._climate_file
+
+  @climate_file.setter
+  def climate_file(self, value):
+    self._climate_file = value
 
   @property
   def city_objects(self) -> Union[List[CityObject], None]:
diff --git a/exports/exports_factory.py b/exports/exports_factory.py
index 8924e6eb..583f7a88 100644
--- a/exports/exports_factory.py
+++ b/exports/exports_factory.py
@@ -7,6 +7,7 @@ Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@conc
 from exports.formats.stl import Stl
 from exports.formats.obj import Obj
 from exports.formats.energy_ade import EnergyAde
+from exports.formats.simplified_radiosity_algorithm import SimplifiedRadiosityAlgorithm
 
 
 class ExportsFactory:
@@ -44,6 +45,14 @@ class ExportsFactory:
 
   @property
   def _obj(self):
+    """
+    Export the city geometry to obj
+    :return: None
+    """
+    return Obj(self._city, self._path)
+
+  @property
+  def _grounded_obj(self):
     """
     Export the city geometry to obj
     :return: None
@@ -58,6 +67,10 @@ class ExportsFactory:
     """
     raise NotImplementedError()
 
+  @property
+  def _sra(self):
+    return SimplifiedRadiosityAlgorithm(self._city, (self._path/ f'{self._city.name}_sra.xml'))
+
   def export(self):
     """
     Export the city model structure to the given export type
diff --git a/exports/formats/simplified_radiosity_algorithm.py b/exports/formats/simplified_radiosity_algorithm.py
new file mode 100644
index 00000000..a6134494
--- /dev/null
+++ b/exports/formats/simplified_radiosity_algorithm.py
@@ -0,0 +1,83 @@
+"""
+Simplified Radiosity Algorithm
+SPDX - License - Identifier: LGPL - 3.0 - or -later
+Copyright © 2020 Project Author Guillermo.GutierrezMorote@concordia.ca
+"""
+from pathlib import Path
+import xmltodict
+
+class SimplifiedRadiosityAlgorithm:
+
+  def __init__(self, city, file_name, begin_month=1, begin_day=1, end_month=12, end_day=31):
+    self._file_name = file_name
+    self._begin_month = begin_month
+    self._begin_day = begin_day
+    self._end_month = end_month
+    self._end_day = end_day
+    self._city = city
+    self._export()
+
+  def _correct_point(self, point):
+    # correct the x, y, z values into the reference frame set by city lower_corner
+    x = point[0] - self._city.lower_corner[0]
+    y = point[1] - self._city.lower_corner[1]
+    z = point[2] - self._city.lower_corner[2]
+    return [x, y, z]
+
+  def _export(self):
+    print('export')
+    buildings = []
+    for building_index, building in enumerate(self._city.buildings):
+      building_dict = {
+        '@Name': f'{building.name}',
+        '@id': f'{building_index}',
+        '@key': f'{building.name}',
+        '@Simulate': 'True'
+      }
+      walls, roofs, floors = [], [], []
+      for surface in building.surfaces:
+        surface_dict = {
+          '@id': f'{surface.id}',
+          '@ShortWaveReflectance': f'{surface.swr}'
+        }
+        for point_index, point in enumerate(surface.perimeter_polygon.points):
+          # todo: check corrected points
+          point = self._correct_point(point)
+          surface_dict[f'V{point_index}'] = {
+            '@x': f'{point[0]}',
+            '@y': f'{point[1]}',
+            '@z': f'{point[2]}'
+          }
+          if surface.type == 'Wall':
+            walls.append(surface_dict)
+          elif surface.type == 'Roof':
+            roofs.append(surface_dict)
+          else:
+            floors.append(surface_dict)
+      building_dict['Wall'] = walls
+      building_dict['Roof'] = roofs
+      building_dict['Floor'] = floors
+      buildings.append(building_dict)
+    sra = {
+      'CitySim': {
+        '@name': f'{self._file_name.name}',
+        'Simulation': {
+          '@beginMonth': f'{self._begin_month}',
+          '@beginDay': f'{self._begin_day}',
+          '@endMonth': f'{self._end_month}',
+          '@endDay': f'{self._end_day}',
+        },
+        'Climate': {
+          '@location': f'{self._city.climate_file}',
+          '@city': f'{self._city.climate_reference_city}'
+        },
+        'District': {
+          'FarFieldObstructions': None,
+          'Building': buildings
+        }
+      }
+    }
+
+    with open(self._file_name, "w") as file:
+      file.write(xmltodict.unparse(sra, pretty=True, short_empty_elements=True))
+    return
diff --git a/helpers/geometry_helper.py b/helpers/geometry_helper.py
index 4362b667..bf808702 100644
--- a/helpers/geometry_helper.py
+++ b/helpers/geometry_helper.py
@@ -12,6 +12,7 @@ from trimesh import intersections
 from helpers.configuration_helper import ConfigurationHelper
 from city_model_structure.attributes.polygon import Polygon
 from city_model_structure.attributes.polyhedron import Polyhedron
+from helpers.location import Location
 
 
 class GeometryHelper:
@@ -192,12 +193,12 @@ class GeometryHelper:
   @staticmethod
   def get_location(latitude, longitude):
     url = 'https://nominatim.openstreetmap.org/reverse?lat={latitude}&lon={longitude}&format=json'
-    resp = requests.get(url.format(latitude=latitude, longitude=longitude))
-    if resp.status_code != 200:
+    response = requests.get(url.format(latitude=latitude, longitude=longitude))
+    if response.status_code != 200:
       # This means something went wrong.
-      raise Exception('GET /tasks/ {}'.format(resp.status_code))
+      raise Exception('GET /tasks/ {}'.format(response.status_code))
     else:
-      response = resp.json()
+      response = response.json()
       # todo: this is wrong, remove in the future
       city = 'new_york_city'
       country = 'us'
@@ -205,7 +206,7 @@ class GeometryHelper:
         city = response['address']['city']
       if 'country_code' in response['address']:
         country = response['address']['country_code']
-      return [country, city]
+      return Location(country, city)
 
   @staticmethod
   def distance_between_points(vertex1, vertex2):
diff --git a/helpers/location.py b/helpers/location.py
new file mode 100644
index 00000000..05a426c9
--- /dev/null
+++ b/helpers/location.py
@@ -0,0 +1,12 @@
+class Location:
+  def __init__(self, country, city):
+    self._country = country
+    self._city = city
+
+  @property
+  def city(self):
+    return self._city
+
+  @property
+  def country(self):
+    return self._country
\ No newline at end of file
diff --git a/tests/test_exports.py b/tests/test_exports.py
index 96cf12d8..bad8ba7e 100644
--- a/tests/test_exports.py
+++ b/tests/test_exports.py
@@ -35,6 +35,9 @@ class TestExports(TestCase):
       PhysicsFactory('ca', self._city_gml).enrich()
       UsageFactory('ca', self._city_gml).enrich()
       SchedulesFactory('comnet', self._city_gml).enrich()
+      cli = 'C:\\Users\\Pilar\\PycharmProjects\\monthlyenergybalance\\tests_data\\weather\\inseldb_Summerland.cli'
+      self._city_gml.climate_file = Path(cli)
+      self._city_gml.climate_reference_city = 'Summerland'
       for building in self._city_gml.buildings:
         building.heating['month'] = pd.DataFrame({'INSEL': [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]})
         building.cooling['month'] = pd.DataFrame({'INSEL': [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]})
@@ -54,3 +57,6 @@ class TestExports(TestCase):
 
   def test_energy_ade_export(self):
     self._export('energy_ade')
+
+  def test_sra_export(self):
+    self._export('sra')
\ No newline at end of file