diff --git a/core/assets-raw/sprites/blocks/combustiongenerator.png b/core/assets-raw/sprites/blocks/combustiongenerator.png
index 44e47307ac..968b4224a7 100644
Binary files a/core/assets-raw/sprites/blocks/combustiongenerator.png and b/core/assets-raw/sprites/blocks/combustiongenerator.png differ
diff --git a/core/assets-raw/sprites/blocks/powerbooster.png b/core/assets-raw/sprites/blocks/powerbooster.png
new file mode 100644
index 0000000000..5d0ce18461
Binary files /dev/null and b/core/assets-raw/sprites/blocks/powerbooster.png differ
diff --git a/core/assets/sprites/sprites.atlas b/core/assets/sprites/sprites.atlas
index 82a8669d54..a2f1f70da8 100644
--- a/core/assets/sprites/sprites.atlas
+++ b/core/assets/sprites/sprites.atlas
@@ -417,27 +417,34 @@ blocks/plasmaturret
   orig: 10, 10
   offset: 0, 0
   index: -1
-blocks/poweredconveyor
+blocks/powerbooster
   rotate: false
   xy: 489, 397
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
-blocks/poweredconveyormove
+blocks/poweredconveyor
   rotate: false
   xy: 499, 397
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
-blocks/pump
+blocks/poweredconveyormove
   rotate: false
   xy: 479, 387
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
+blocks/pump
+  rotate: false
+  xy: 489, 387
+  size: 8, 8
+  orig: 8, 8
+  offset: 0, 0
+  index: -1
 blocks/repairturret
   rotate: false
   xy: 177, 2
@@ -447,35 +454,35 @@ blocks/repairturret
   index: -1
 blocks/rock
   rotate: false
-  xy: 499, 387
+  xy: 389, 224
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/rock2
   rotate: false
-  xy: 389, 224
+  xy: 389, 214
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/rock2shadow
   rotate: false
-  xy: 389, 214
+  xy: 389, 204
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/rockshadow
   rotate: false
-  xy: 389, 204
+  xy: 332, 197
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/router
   rotate: false
-  xy: 332, 197
+  xy: 332, 187
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -489,7 +496,7 @@ blocks/shadow
   index: -1
 blocks/shieldgenerator
   rotate: false
-  xy: 332, 187
+  xy: 342, 197
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -503,21 +510,21 @@ blocks/shotgunturret
   index: -1
 blocks/shrub
   rotate: false
-  xy: 342, 197
+  xy: 332, 177
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/shrubshadow
   rotate: false
-  xy: 332, 177
+  xy: 342, 187
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/smelter
   rotate: false
-  xy: 342, 187
+  xy: 342, 177
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -531,21 +538,21 @@ blocks/sniperturret
   index: -1
 blocks/steelconveyor
   rotate: false
-  xy: 342, 177
+  xy: 352, 192
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/steelconveyormove
   rotate: false
-  xy: 352, 192
+  xy: 352, 182
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/steelwall
   rotate: false
-  xy: 352, 182
+  xy: 362, 192
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -559,49 +566,49 @@ blocks/stone
   index: -1
 blocks/stone1
   rotate: false
-  xy: 362, 192
+  xy: 362, 182
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stone2
   rotate: false
-  xy: 362, 182
+  xy: 372, 192
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stone3
   rotate: false
-  xy: 372, 192
+  xy: 372, 182
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stoneblock
   rotate: false
-  xy: 372, 182
+  xy: 382, 192
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stoneblock2
   rotate: false
-  xy: 382, 192
+  xy: 382, 182
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stoneblock3
   rotate: false
-  xy: 382, 182
+  xy: 352, 172
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/stonedrill
   rotate: false
-  xy: 352, 172
+  xy: 362, 172
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -615,63 +622,63 @@ blocks/stoneedge
   index: -1
 blocks/stonewall
   rotate: false
-  xy: 362, 172
+  xy: 372, 172
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/thermalgenerator
   rotate: false
-  xy: 372, 172
+  xy: 382, 172
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titanium1
   rotate: false
-  xy: 382, 172
+  xy: 392, 194
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titanium2
   rotate: false
-  xy: 392, 194
+  xy: 392, 184
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titanium3
   rotate: false
-  xy: 392, 184
+  xy: 392, 174
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titaniumdrill
   rotate: false
-  xy: 392, 174
+  xy: 332, 167
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titaniumpurifier
   rotate: false
-  xy: 332, 167
+  xy: 342, 167
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titaniumshieldwall
   rotate: false
-  xy: 342, 167
+  xy: 352, 162
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/titaniumwall
   rotate: false
-  xy: 352, 162
+  xy: 362, 162
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -685,35 +692,35 @@ blocks/turret
   index: -1
 blocks/uranium1
   rotate: false
-  xy: 372, 162
+  xy: 382, 162
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/uranium2
   rotate: false
-  xy: 382, 162
+  xy: 392, 164
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/uranium3
   rotate: false
-  xy: 392, 164
+  xy: 389, 282
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/uraniumdrill
   rotate: false
-  xy: 389, 282
+  xy: 389, 272
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 blocks/water
   rotate: false
-  xy: 389, 272
+  xy: 389, 262
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
@@ -1367,14 +1374,14 @@ weapons/multigun
   index: -1
 weapons/railgun
   rotate: false
-  xy: 489, 387
+  xy: 499, 387
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
   index: -1
 weapons/triblaster
   rotate: false
-  xy: 362, 162
+  xy: 372, 162
   size: 8, 8
   orig: 8, 8
   offset: 0, 0
diff --git a/core/assets/sprites/sprites.png b/core/assets/sprites/sprites.png
index bf73a14cd1..5a5595a6c1 100644
Binary files a/core/assets/sprites/sprites.png and b/core/assets/sprites/sprites.png differ
diff --git a/core/src/io/anuke/mindustry/Renderer.java b/core/src/io/anuke/mindustry/Renderer.java
index b466e1b20d..29b192a53a 100644
--- a/core/src/io/anuke/mindustry/Renderer.java
+++ b/core/src/io/anuke/mindustry/Renderer.java
@@ -305,7 +305,8 @@ public class Renderer extends RendererModule{
 			x = tilex*tilesize;
 			y = tiley*tilesize;
 
-			boolean valid = World.validPlace(tilex, tiley, player.recipe.result);
+			boolean valid = World.validPlace(tilex, tiley, player.recipe.result) && (android ||
+					Input.cursorNear());
 			
 			Vector2 offset = player.recipe.result.getPlaceOffset();
 			
diff --git a/core/src/io/anuke/mindustry/resource/Recipe.java b/core/src/io/anuke/mindustry/resource/Recipe.java
index 861c64143a..87d559a922 100644
--- a/core/src/io/anuke/mindustry/resource/Recipe.java
+++ b/core/src/io/anuke/mindustry/resource/Recipe.java
@@ -17,6 +17,8 @@ public enum Recipe{
 	healturret(defense, DefenseBlocks.repairturret, stack(Item.iron, 30)),
 	megahealturret(defense, DefenseBlocks.megarepairturret, stack(Item.iron, 20), stack(Item.steel, 30)),
 	titaniumshieldwall(defense, DefenseBlocks.titaniumshieldwall, stack(Item.titanium, 2)),
+	shieldgenerator(defense, DefenseBlocks.shieldgenerator, stack(Item.titanium, 10), stack(Item.dirium, 10)),
+	
 	
 	conveyor(distribution, DistributionBlocks.conveyor, stack(Item.stone, 1)),
 	steelconveyor(distribution, DistributionBlocks.steelconveyor, stack(Item.steel, 1)),
@@ -55,7 +57,7 @@ public enum Recipe{
 	thermalgenerator(power, ProductionBlocks.thermalgenerator, stack(Item.titanium, 10), stack(Item.dirium, 10)),
 	combustiongenerator(power, ProductionBlocks.combustiongenerator, stack(Item.titanium, 10), stack(Item.dirium, 10)),
 	nuclearreactor(power, ProductionBlocks.nuclearReactor, stack(Item.titanium, 10), stack(Item.dirium, 10)),
-	shieldgenerator(power, DefenseBlocks.shieldgenerator, stack(Item.titanium, 10), stack(Item.dirium, 10)),
+	powerbooster(power, DistributionBlocks.powerbooster, stack(Item.titanium, 10), stack(Item.dirium, 10)),
 	
 	pump(production, ProductionBlocks.pump, stack(Item.steel, 10));
 	
diff --git a/core/src/io/anuke/mindustry/world/blocks/DistributionBlocks.java b/core/src/io/anuke/mindustry/world/blocks/DistributionBlocks.java
index 90eb488389..337821ed48 100644
--- a/core/src/io/anuke/mindustry/world/blocks/DistributionBlocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/DistributionBlocks.java
@@ -41,5 +41,10 @@ public class DistributionBlocks{
 	},
 	liquidjunction = new LiquidJunction("liquidjunction"){
 		
+	},
+	powerbooster = new PowerBooster("powerbooster"){
+		{
+			formalName = "power booster";
+		}
 	};
 }
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/BlockPart.java b/core/src/io/anuke/mindustry/world/blocks/types/BlockPart.java
index b2d62dc92b..8ef032b353 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/BlockPart.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/BlockPart.java
@@ -65,8 +65,19 @@ public class BlockPart extends Block implements PowerAcceptor, LiquidAcceptor{
 		}
 	}
 	
+	@Override
+	public boolean acceptsPower(Tile tile){
+		Block block = linked(tile);
+		if(block instanceof PowerAcceptor){
+			return ((PowerAcceptor)block).acceptsPower(tile.getLinked());
+		}else{
+			return false;
+		}
+	}
+	
 	private Block linked(Tile tile){
 		return tile.getLinked().block();
 	}
 
+
 }
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/PowerAcceptor.java b/core/src/io/anuke/mindustry/world/blocks/types/PowerAcceptor.java
index d2505aa3ca..282f9ca222 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/PowerAcceptor.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/PowerAcceptor.java
@@ -6,4 +6,5 @@ public interface PowerAcceptor{
 	/**Attempts to add some power to this block; returns the amount of power <i>not</i> accepted.
 	 * To add no power, you would return amount.*/
 	public float addPower(Tile tile, float amount);
+	public boolean acceptsPower(Tile tile);
 }
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java b/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
index 9749c82721..237eb189af 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/PowerBlock.java
@@ -15,6 +15,7 @@ import io.anuke.ucore.util.Mathf;
 
 public abstract class PowerBlock extends Block implements PowerAcceptor{
 	public float powerCapacity = 10f;
+	public float voltage = 0.001f;
 	
 	public PowerBlock(String name) {
 		super(name);
@@ -47,8 +48,19 @@ public abstract class PowerBlock extends Block implements PowerAcceptor{
 		return false;
 	}
 	
+	@Override
+	public boolean acceptsPower(Tile tile){
+		PowerEntity entity = tile.entity();
+		
+		return entity.power + 0.001f <= powerCapacity;
+	}
+	
+	//TODO voltage requirement so blocks need specific voltage
 	@Override
 	public float addPower(Tile tile, float amount){
+		if(amount < voltage){
+			return amount;
+		}
 		PowerEntity entity = tile.entity();
 		
 		float canAccept = Math.min(powerCapacity - entity.power, amount);
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
index 91d71752de..53cb4f6774 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
@@ -14,6 +14,7 @@ public class ShieldBlock extends PowerBlock{
 
 	public ShieldBlock(String name) {
 		super(name);
+		voltage = powerDrain;
 	}
 
 	@Override
@@ -27,7 +28,7 @@ public class ShieldBlock extends PowerBlock{
 		}
 
 		if(entity.power > powerDrain * Timers.delta()){
-			if(!entity.shield.active){
+			if(!entity.shield.active && entity.power > powerDrain * Timers.delta() * 10f){
 				entity.shield.add();
 			}
 
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/distribution/PowerBooster.java b/core/src/io/anuke/mindustry/world/blocks/types/distribution/PowerBooster.java
index 2a4d015ecf..a225079cac 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/distribution/PowerBooster.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/distribution/PowerBooster.java
@@ -16,11 +16,9 @@ public class PowerBooster extends Generator{
 	}
 	
 	@Override
-	public float addPower(Tile tile, float amount){
+	public boolean acceptsPower(Tile tile){
 		PowerEntity entity = tile.entity();
 		
-		float canAccept = Math.min(powerCapacity - entity.power, amount);
-		entity.power += canAccept;
-		return canAccept;
+		return entity.power + 0.001f <= powerCapacity;
 	}
 }
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/production/Generator.java b/core/src/io/anuke/mindustry/world/blocks/types/production/Generator.java
index 098841b0e4..1910fc92d0 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/production/Generator.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/production/Generator.java
@@ -51,7 +51,8 @@ public class Generator extends PowerBlock{
 
 					if(Vector2.dst(x, y, 0, 0) < powerRange){
 						Tile dest = World.tile(tile.x + x, tile.y + y);
-						if(dest != null && dest.block() instanceof PowerAcceptor){
+						if(dest != null && dest.block() instanceof PowerAcceptor && 
+								((PowerAcceptor)dest.block()).acceptsPower(dest)){
 							if(i == 1){
 								PowerAcceptor block = (PowerAcceptor) dest.block();
 
@@ -67,15 +68,15 @@ public class Generator extends PowerBlock{
 				}
 			}
 			
+			//TODO better distribution scheme
 			if(i == 0 && acceptors > 0){
-				flow = Mathf.clamp(powerSpeed / acceptors, 0f, p.power / acceptors);
+				flow = Mathf.clamp(p.power / acceptors, 0f, powerSpeed / acceptors);
 			}
 		}
 	}
 
-	//don't accept any power
 	@Override
-	public float addPower(Tile tile, float amount){
-		return amount;
+	public boolean acceptsPower(Tile tile){
+		return false;
 	}
 }