diff --git a/CHANGELOG b/CHANGELOG
index 222e0e1ed78ce0888289dabe782f2900a4711032..9c99603d2e1389eeccd8614868098f9d29fdee90 100755
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,5 @@
-0.0.0
-    2019/XX/XX
+0.1.1
+    2019/10/29
 
     First beta version:
 
@@ -26,9 +26,11 @@
         9. Point sources sector
         10. Road traffic sector
         11. Traffic area (evaporative & small cities) sector
+        12. Solvents sector
 
     - Writing options:
+        0. Return emissions on memory
         1. Default writer
         2. CMAQ writer
         3. MONARCH writer
-        4. WRF-Chem writer
\ No newline at end of file
+        4. WRF-Chem writer
diff --git a/hermesv3_bu/__init__.py b/hermesv3_bu/__init__.py
index 3dc1f76bc69e3f559bee6253b24fc93acee9e1f9..485f44ac21b2ee78a2ee1ed0ea584114a1c957c3 100755
--- a/hermesv3_bu/__init__.py
+++ b/hermesv3_bu/__init__.py
@@ -1 +1 @@
-__version__ = "0.1.0"
+__version__ = "0.1.1"
diff --git a/hermesv3_bu/hermes.py b/hermesv3_bu/hermes.py
index 7b678df1f1260183ddb5ceba381e09f80f625485..ff055d6873e08528b73937ba54781d665812bec3 100755
--- a/hermesv3_bu/hermes.py
+++ b/hermesv3_bu/hermes.py
@@ -48,11 +48,11 @@ class Hermes(object):
         self.sector_manager = SectorManager(
             self.comm, self.logger, self.grid, self.clip, self.date_array, self.arguments)
 
-        self.writer = select_writer(self.logger, self.arguments, self.grid, self.date_array)
+        self.writer = select_writer(self.logger, self.comm, self.arguments, self.grid, self.date_array)
 
         self.logger.write_time_log('HERMES', '__init__', timeit.default_timer() - self.initial_time)
 
-    def main(self):
+    def main(self, return_emis=False):
         """
         Main functionality of the model.
         """
@@ -62,6 +62,8 @@ class Hermes(object):
             self.logger.write_log('***** HERMESv3_BU First Time finished successfully *****')
         else:
             emis = self.sector_manager.run()
+            if return_emis:
+                return emis
             waiting_time = timeit.default_timer()
             self.comm.Barrier()
             self.logger.write_log('All emissions calculated!')
@@ -80,8 +82,8 @@ class Hermes(object):
         return None
 
 
-def run(comm=None):
-    date = Hermes(Config(comm), comm).main()
+def run():
+    date = Hermes(Config()).main()
     while date is not None:
         date = Hermes(Config(new_date=date)).main()
     sys.exit(0)
diff --git a/hermesv3_bu/writer/writer.py b/hermesv3_bu/writer/writer.py
index 3d5d284d78a20491e3b0fefe56fa3cd01fe03c59..0a92322b392c2c7906313218d4951cd46fc77242 100755
--- a/hermesv3_bu/writer/writer.py
+++ b/hermesv3_bu/writer/writer.py
@@ -15,7 +15,7 @@ BALANCED = False
 MPI_TAG_CONSTANT = 10**6
 
 
-def select_writer(logger, arguments, grid, date_array):
+def select_writer(logger, comm_world, arguments, grid, date_array):
     """
     Select the writer depending on the arguments passed to HERMESv3_BU
 
@@ -35,7 +35,6 @@ def select_writer(logger, arguments, grid, date_array):
     :rtype: Writer
     """
     spent_time = timeit.default_timer()
-    comm_world = MPI.COMM_WORLD
 
     if grid.shape[2] % 2 == 0:
         max_procs = grid.shape[2] // 2