Emergency power unit

Content.Server/DeltaV/Construction/Components/PreventDeconstructionComponent.cs

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+namespace Content.Server.DeltaV.Construction.Components;
+
+[RegisterComponent]
+public sealed partial class PreventDeconstructionComponent : Component
+{
+    [DataField]
+    public bool RemoveWirePanel;
+}

Content.Server/DeltaV/Construction/PreventDeconstructionSystem.cs

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+using Content.Server.Construction.Components;
+using Content.Server.DeltaV.Construction.Components;
+using Content.Shared.Wires;
+
+namespace Content.Server.DeltaV.Construction;
+
+public sealed class PreventDeconstructionSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<PreventDeconstructionComponent, MapInitEvent>(OnMapInit);
+    }
+
+    private void OnMapInit(EntityUid uid, PreventDeconstructionComponent component, MapInitEvent args)
+    {
+        RemComp<ConstructionComponent>(uid);
+        if (component.RemoveWirePanel)
+            RemComp<WiresPanelComponent>(uid);
+    }
+}

Resources/Prototypes/DeltaV/Entities/Structures/Power/smes.yml

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+- type: entity
+  id: SMESEmergency
+  name: Emergency Power Unit
+  description: Supplies emergency power. Cannot be recharged.
+  suffix: Basic, 1.6MJ
+  parent: BaseSMES
+  components:
+    # Visual changes
+    - type: Sprite
+      sprite: DeltaV/Structures/Power/epu.rsi
+    - type: PowerMonitoringDevice
+      sprite: DeltaV/Structures/Power/epu.rsi
+      group: Generator
+      loadNode: output
+      collectionName: emergency power unit
+    - type: PointLight
+      radius: 1.5
+      energy: 1.6
+      color: "#FF4020"
+    - type: AmbientSound
+      volume: -5
+      range: 5
+      sound:
+        path: /Audio/Ambience/Objects/buzzing.ogg
+    # Functional changes
+    - type: Battery
+      maxCharge: 1600000
+      startingCharge: 1600000
+    - type: PowerNetworkBattery
+      maxChargeRate: 0
+    - type: BatteryCharger
+      voltage: High
+      node:
+    - type: NodeContainer
+      examinable: true
+      nodes:
+        output:
+          !type:CableDeviceNode
+          nodeGroupID: HVPower
+    - type: PreventDeconstruction
+      removeWirePanel: true
+
+- type: entity
+  id: SMESEmergencyHighCapacity
+  suffix: High-Capacity, 5MJ
+  parent: SMESEmergency
+  components:
+    - type: Battery
+      maxCharge: 5000000
+      startingCharge: 5000000

Resources/Textures/DeltaV/Structures/Power/epu.rsi/meta.json

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+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from tgstation at commit https://github.com/tgstation/tgstation/commit/9c7d509354ee030300f63c701da63c17928c3b3b and modified by Swept | smes.png created by @ps3moira on Discord",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "smes"
+    },
+		{
+      "name": "static"
+    },
+    {
+      "name": "smes-open"
+    },
+    {
+      "name": "smes-oc0"
+    },
+    {
+      "name": "smes-oc1",
+      "delays": [
+        [
+          0.5,
+          0.5
+        ]
+      ]
+    },
+    {
+      "name": "smes-oc2",
+      "delays": [
+        [
+          0.5,
+          0.5
+        ]
+      ]
+    },
+    {
+      "name": "smes-og1",
+      "delays": [
+        [
+          1,
+          1
+        ]
+      ]
+    },
+    {
+      "name": "smes-og2"
+    },
+    {
+      "name": "smes-og3"
+    },
+    {
+      "name": "smes-og4"
+    },
+    {
+      "name": "smes-og5"
+    },
+    {
+      "name": "smes-op0"
+    },
+    {
+      "name": "smes-op1",
+      "delays": [
+        [
+          1,
+          1
+        ]
+      ]
+    },
+    {
+      "name": "smes-op2"
+    }
+  ]
+}