diff --git a/OpenRA.Mods.RA/Buildings/PowerManager.cs b/OpenRA.Mods.RA/Buildings/PowerManager.cs
index e37c81bc0e..226c974ba2 100755
--- a/OpenRA.Mods.RA/Buildings/PowerManager.cs
+++ b/OpenRA.Mods.RA/Buildings/PowerManager.cs
@@ -28,10 +28,12 @@ namespace OpenRA.Mods.RA.Buildings
 		Dictionary<Actor, int> PowerDrain = new Dictionary<Actor, int>();
 		[Sync] int totalProvided;
 		public int PowerProvided { get { return totalProvided; } }
-	
+
 		[Sync] int totalDrained;
 		public int PowerDrained { get { return totalDrained; } }
-		
+
+		public int ExcessPower { get { return totalProvided - totalDrained; } }
+
 		public PowerManager(ActorInitializer init, PowerManagerInfo info)
 		{
 			Info = info;
diff --git a/OpenRA.Mods.RA/HackyAI.cs b/OpenRA.Mods.RA/HackyAI.cs
index f1814caa7a..28b3fd129f 100644
--- a/OpenRA.Mods.RA/HackyAI.cs
+++ b/OpenRA.Mods.RA/HackyAI.cs
@@ -145,7 +145,8 @@ namespace OpenRA.Mods.RA
 
 			foreach (var frac in Info.BuildingFractions)
 				if (buildableThings.Any(b => b.Name == frac.Key))
-					if (myBuildings.Count(a => a == frac.Key) < frac.Value * myBuildings.Length)
+					if (myBuildings.Count(a => a == frac.Key) < frac.Value * myBuildings.Length &&
+					    playerPower.ExcessPower >= Rules.Info[frac.Key].Traits.Get<BuildingInfo>().Power)
 						return Rules.Info[frac.Key];
 
 			return null;