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CHANGELOG.md

@@ -33,6 +33,7 @@ Classify the change according to the following categories:
 - Truncate the last day of the year instead of the leap day for leap years
 ##### Added
 - Option for ASHP to `force_dispatch` (default = true) which maximizes ASHP thermal output
+- Added `min_duration_hours` and `max_duration_hours` for limitting electric storage's energy capacity
 
 ## v3.10.2
 ### Minor Updates

reoptjl/migrations/0077_electricstorageinputs_max_duration_hours_and_more.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.0.7 on 2025-01-27 05:41
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('reoptjl', '0076_ashpspaceheaterinputs_force_dispatch_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='electricstorageinputs',
+            name='max_duration_hours',
+            field=models.FloatField(blank=True, default=100000.0, help_text='Maximum amount of time storage can discharge at its rated power capacity', validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(1000000000.0)]),
+        ),
+        migrations.AddField(
+            model_name='electricstorageinputs',
+            name='min_duration_hours',
+            field=models.FloatField(blank=True, default=0.0, help_text='Minimum amount of time storage can discharge at its rated power capacity', validators=[django.core.validators.MinValueValidator(0), django.core.validators.MaxValueValidator(1000000000.0)]),
+        ),
+    ]

reoptjl/models.py

@@ -3449,6 +3449,24 @@ class ElectricStorageInputs(BaseModel, models.Model):
         blank=True,
         help_text="Rebate based on installed energy capacity"
     )
+    min_duration_hours = models.FloatField(
+        default=0.0,
+        validators=[
+            MinValueValidator(0),
+            MaxValueValidator(1.0e9)
+        ],
+        blank=True,
+        help_text="Minimum amount of time storage can discharge at its rated power capacity"
+    )
+    max_duration_hours = models.FloatField(
+        default=100000.0,
+        validators=[
+            MinValueValidator(0),
+            MaxValueValidator(1.0e9)
+        ],
+        blank=True,
+        help_text="Maximum amount of time storage can discharge at its rated power capacity"
+    )
 
 
 class ElectricStorageOutputs(BaseModel, models.Model):

reoptjl/test/posts/all_inputs_test.json

@@ -152,6 +152,8 @@
         "max_kw": 100.0,
         "min_kwh": 200.0,
         "max_kwh": 200.0,
+        "min_duration_hours": 2.0,
+        "max_duration_hours": 2.0,
         "internal_efficiency_fraction": 0.975,
         "inverter_efficiency_fraction": 0.96,
         "rectifier_efficiency_fraction": 0.96,