diff --git a/apps/map/models.py b/apps/map/models.py
index ed53190..17a0097 100644
--- a/apps/map/models.py
+++ b/apps/map/models.py
@@ -742,12 +742,32 @@ class CaseStudy(models.Model):
         null=True,
     )
 
+    # XXX Delete after migration
+    maximum_power_output = models.DecimalField(
+        verbose_name=_('Maximum power output'),
+        help_text=_('Enter the maximum power output of the storage system in kilowatts (kW).'),
+        max_digits=12,
+        decimal_places=3,
+        blank=True,
+        null=True,
+    )
+
+    # XXX Delete after migration
+    discharge_time = models.DecimalField(
+        verbose_name=_('Time for discharge from full capacity'),
+        help_text=_('Enter the time it takes to discharge from full capacity at maximum power output (in hours).'),
+        max_digits=6,
+        decimal_places=3,
+        blank=True,
+        null=True
+    )
+
     # 2.2.3
     contractor_or_supplier_of_technology = models.CharField(
         verbose_name=_('Contractor and/or supplier of technology'),
         help_text=_('List companies that act as contractors or suppliers – e.g. Siemens Gamesa, GE, Alstom, Vestas, Hanwha Q CELLS, Mitsubishi, First Solar, Jinko Solar, Trina Solar, Suzlon Energy, Statkraft, Shanghai Electric, Ballard Power Systems, Panasonic, etc'),
         max_length=256,
-        blank=True
+        blank=True,
     )
 
     # 2.2.4
@@ -769,7 +789,9 @@ class CaseStudy(models.Model):
         blank=True
     )
 
-    ## Mining
+    ##
+    # Mining
+    ##
 
     minerals_or_commodities = models.CharField(
         verbose_name=_("Primary mineral mined"),