diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 8e2f566326..6294c1d5fe 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -921,6 +921,7 @@
     <Compile Include="UpdateRules\Rules\20180923\DefineNotificationDefaults.cs" />
     <Compile Include="UpdateRules\Rules\20180923\RenameEditorTilesetFilter.cs" />
     <Compile Include="UpdateRules\Rules\20180923\MergeRearmAndRepairAnimation.cs" />
+    <Compile Include="UpdateRules\Rules\20180923\LowPowerSlowdownToModifier.cs" />
     <Compile Include="Traits\Player\PlayerResources.cs" />
     <Compile Include="UtilityCommands\DumpSequenceSheetsCommand.cs" />
     <Compile Include="Traits\Render\WithBuildingRepairDecoration.cs" />
diff --git a/OpenRA.Mods.Common/UpdateRules/Rules/20180923/LowPowerSlowdownToModifier.cs b/OpenRA.Mods.Common/UpdateRules/Rules/20180923/LowPowerSlowdownToModifier.cs
new file mode 100644
index 0000000000..a4116b8673
--- /dev/null
+++ b/OpenRA.Mods.Common/UpdateRules/Rules/20180923/LowPowerSlowdownToModifier.cs
@@ -0,0 +1,54 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2018 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace OpenRA.Mods.Common.UpdateRules.Rules
+{
+	public class LowPowerSlowdownToModifier : UpdateRule
+	{
+		public override string Name { get { return "LowPowerSlowdown is renamed to LowPowerModifier"; } }
+		public override string Description
+		{
+			get
+			{
+				return "ProductionQueue.LowPowerSlowdown is renamed to LowPowerModifier, and\n" +
+					"multiplied by 100 to allow multiplying the build time with non-integer values.\n" +
+					"Also default value is changed to 100.";
+			}
+		}
+
+		readonly string[] queueTraits = { "ProductionQueue", "ClassicProductionQueue" };
+
+		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
+		{
+			foreach (var queue in queueTraits.SelectMany(t => actorNode.ChildrenMatching(t)))
+			{
+				var lowPower = queue.LastChildMatching("LowPowerSlowdown");
+				if (lowPower != null)
+				{
+					if (lowPower.NodeValue<int>() == 1)
+						queue.RemoveNodes("LowPowerSlowdown");
+					else
+					{
+						lowPower.RenameKey("LowPowerModifier");
+						lowPower.ReplaceValue((lowPower.NodeValue<int>() * 100).ToString());
+					}
+				}
+				else
+					queue.AddNode("LowPowerModifier", "300");
+			}
+
+			yield break;
+		}
+	}
+}
diff --git a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
index a51126e423..a7546dd3dc 100644
--- a/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
+++ b/OpenRA.Mods.Common/UpdateRules/UpdatePath.cs
@@ -94,6 +94,7 @@ namespace OpenRA.Mods.Common.UpdateRules
 				new MergeRearmAndRepairAnimation(),
 				new MergeCaptureTraits(),
 				new RemovedNotifyBuildComplete(),
+				new LowPowerSlowdownToModifier(),
 			})
 		};