diff --git a/Content.Server/Power/Components/UpgradeBatteryComponent.cs b/Content.Server/Power/Components/UpgradeBatteryComponent.cs
new file mode 100644
index 0000000000..74a5328148
--- /dev/null
+++ b/Content.Server/Power/Components/UpgradeBatteryComponent.cs
@@ -0,0 +1,28 @@
+using Content.Shared.Construction.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+
+namespace Content.Server.Power.Components
+{
+
+    [RegisterComponent]
+    public sealed class UpgradeBatteryComponent : Component
+    {
+        /// <summary>
+        ///     The machine part that affects the power capacity.
+        /// </summary>
+        [DataField("machinePartPowerCapacity", customTypeSerializer: typeof(PrototypeIdSerializer<MachinePartPrototype>))]
+        public string MachinePartPowerCapacity = "Capacitor";
+
+        /// <summary>
+        ///     The machine part rating is raised to this power when calculating power gain
+        /// </summary>
+        [DataField("maxChargeMultiplier")]
+        public float MaxChargeMultiplier = 2f;
+
+        /// <summary>
+        ///     Power gain scaling
+        /// </summary>
+        [DataField("baseMaxCharge")]
+        public float BaseMaxCharge = 8000000;
+    }
+}
diff --git a/Content.Server/Power/EntitySystems/UpgradeBatterySystem.cs b/Content.Server/Power/EntitySystems/UpgradeBatterySystem.cs
new file mode 100644
index 0000000000..0d48b76463
--- /dev/null
+++ b/Content.Server/Power/EntitySystems/UpgradeBatterySystem.cs
@@ -0,0 +1,27 @@
+using Content.Server.Construction;
+using Content.Server.Power.Components;
+using JetBrains.Annotations;
+
+namespace Content.Server.Power.SMES
+{
+    [UsedImplicitly]
+    public sealed class UpgradeBatterySystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            SubscribeLocalEvent<UpgradeBatteryComponent, RefreshPartsEvent>(OnRefreshParts);
+        }
+
+        public void OnRefreshParts(EntityUid uid, UpgradeBatteryComponent component, RefreshPartsEvent args)
+        {
+            var capacitorRating = args.PartRatings[component.MachinePartPowerCapacity];
+
+            if (TryComp<BatteryComponent>(uid, out var batteryComp))
+            {
+                batteryComp.MaxCharge = MathF.Pow(component.MaxChargeMultiplier, capacitorRating - 1) * component.BaseMaxCharge;
+            }
+        }
+    }
+}
diff --git a/Resources/Prototypes/Entities/Structures/Power/smes.yml b/Resources/Prototypes/Entities/Structures/Power/smes.yml
index 38b1acfa54..8074059930 100644
--- a/Resources/Prototypes/Entities/Structures/Power/smes.yml
+++ b/Resources/Prototypes/Entities/Structures/Power/smes.yml
@@ -20,11 +20,13 @@
       layers:
         - state: smes
     - type: Smes
+    - type: UpgradeBattery
+      maxChargeMultiplier: 2
+      baseMaxCharge: 8000000
     - type: Appearance
       visuals:
         - type: SmesVisualizer
     - type: Battery
-      maxCharge: 10000000
       startingCharge: 0
     - type: ExaminableBattery
     - type: NodeContainer
@@ -66,11 +68,11 @@
 - type: entity
   parent: BaseSMES
   id: SMESBasic
-  suffix: Basic, 10MW
+  suffix: Basic, 8MW
   components:
   - type: Battery
-    maxCharge: 10000000
-    startingCharge: 10000000
+    maxCharge: 8000000
+    startingCharge: 8000000
 
 - type: entity
   parent: SMESBasic
diff --git a/Resources/Prototypes/Entities/Structures/Power/substation.yml b/Resources/Prototypes/Entities/Structures/Power/substation.yml
index 1a06b6ce64..2f05f24dc4 100644
--- a/Resources/Prototypes/Entities/Structures/Power/substation.yml
+++ b/Resources/Prototypes/Entities/Structures/Power/substation.yml
@@ -17,8 +17,10 @@
       shader: unshaded
     - state: full
       shader: unshaded
+  - type: UpgradeBattery
+    maxChargeMultiplier: 2
+    baseMaxCharge: 2500000
   - type: Battery
-    maxCharge: 4000000
     startingCharge: 0
   - type: ExaminableBattery
   - type: PointLight
@@ -163,11 +165,11 @@
 - type: entity
   parent: BaseSubstation
   id: SubstationBasic
-  suffix: Basic, 4MW
+  suffix: Basic, 2.5MW
   components:
   - type: Battery
-    maxCharge: 4000000
-    startingCharge: 4000000
+    maxCharge: 2500000
+    startingCharge: 2500000
 
 - type: entity
   parent: SubstationBasic