diff --git a/reoptjl/migrations/0081_ghpinputs_load_served_by_ghp_and_more.py b/reoptjl/migrations/0081_ghpinputs_load_served_by_ghp_and_more.py
new file mode 100644
index 000000000..856dd08ab
--- /dev/null
+++ b/reoptjl/migrations/0081_ghpinputs_load_served_by_ghp_and_more.py
@@ -0,0 +1,29 @@
+# Generated by Django 4.0.7 on 2025-03-25 17:33
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('reoptjl', '0080_electricloadoutputs_annual_electric_load_with_thermal_conversions_kwh_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='ghpinputs',
+            name='load_served_by_ghp',
+            field=models.TextField(blank=True, default='nonpeak', help_text='How to split between load served by GHP and load served by backup system'),
+        ),
+        migrations.AddField(
+            model_name='ghpinputs',
+            name='max_number_of_boreholes',
+            field=models.FloatField(blank=True, help_text='Maximum number of boreholes for GHX', null=True, validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(100000000.0)]),
+        ),
+        migrations.AddField(
+            model_name='ghpinputs',
+            name='max_ton',
+            field=models.FloatField(blank=True, help_text='Maximum thermal power size constraint for GHP [ton]', null=True, validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(100000000.0)]),
+        ),
+    ]
diff --git a/reoptjl/models.py b/reoptjl/models.py
index 47d088f7a..56e4d4e0e 100644
--- a/reoptjl/models.py
+++ b/reoptjl/models.py
@@ -7992,7 +7992,34 @@ class GHPInputs(BaseModel, models.Model):
         blank=True,
         null=True,
         help_text="Annual GHP incremental operations and maintenance costs in $/ft^2-building/year"
-    ) 
+    )
+
+    max_ton = models.FloatField(
+        validators=[
+            MinValueValidator(0),
+            MaxValueValidator(MAX_BIG_NUMBER)
+        ],
+        null=True,
+        blank=True,
+        help_text=("Maximum thermal power size constraint for GHP [ton]")
+    )
+
+    max_number_of_boreholes = models.FloatField(
+        validators=[
+            MinValueValidator(0),
+            MaxValueValidator(MAX_BIG_NUMBER)
+        ],
+        null=True,
+        blank=True,
+        help_text=("Maximum number of boreholes for GHX")
+    )
+
+    load_served_by_ghp = models.TextField(
+        null=False,
+        blank=True,
+        default="nonpeak",
+        help_text="How to split between load served by GHP and load served by backup system"
+    )
 
     # REQUIRED FOR GHP
     building_sqft = models.FloatField(