diff --git a/Cards/compression_forge.json b/Cards/compression_forge.json
index 162cc8e..917ed1d 100644
--- a/Cards/compression_forge.json
+++ b/Cards/compression_forge.json
@@ -7,5 +7,17 @@
   "value": 5,
   "type": "Structures",
   "script": "Resource",
-  "_IsBuilding": true
+  "_IsBuilding": true,
+  "_EnergyConnectors": [
+    {
+      "EnergyConnectionType": "input",
+      "EnergyConnectionStrength": 5,
+      "EnergyConnectionAmount": 3
+    },
+    {
+      "EnergyConnectionType": "output",
+      "EnergyConnectionStrength": 5,
+      "EnergyConnectionAmount": 1
+    }
+  ]
 }
diff --git a/Cards/enchanted_smelter.json b/Cards/enchanted_smelter.json
index f374bb6..9445a0b 100644
--- a/Cards/enchanted_smelter.json
+++ b/Cards/enchanted_smelter.json
@@ -7,5 +7,17 @@
   "value": 7,
   "type": "Structures",
   "script": "Resource",
-  "_IsBuilding": true
+  "_IsBuilding": true,
+  "_EnergyConnectors": [
+    {
+      "EnergyConnectionType": "input",
+      "EnergyConnectionStrength": 5,
+      "EnergyConnectionAmount": 3
+    },
+    {
+      "EnergyConnectionType": "output",
+      "EnergyConnectionStrength": 5,
+      "EnergyConnectionAmount": 1
+    }
+  ]
 }
diff --git a/Cards/magic_dust_mine.json b/Cards/magic_dust_mine.json
index 3fea22c..0a0b8f4 100644
--- a/Cards/magic_dust_mine.json
+++ b/Cards/magic_dust_mine.json
@@ -27,5 +27,12 @@
         "Chance": 1
       }
     ]
-  }
+  },
+  "_EnergyConnectors": [
+    {
+      "EnergyConnectionType": "output",
+      "EnergyConnectionStrength": 5,
+      "EnergyConnectionAmount": 1
+    }
+  ]
 }