diff --git a/machines/nuclear_reactor.lua b/machines/nuclear_reactor.lua
index 607ae19..08ee313 100644
--- a/machines/nuclear_reactor.lua
+++ b/machines/nuclear_reactor.lua
@@ -70,7 +70,7 @@ local function findMaxFuelCluster(fuelList)
 	for y=1,4 do
 		for x=1,5 do
 			local iy=y-1
-			local stack=fuelList[iy*4+x]
+			local stack=fuelList[iy*5+x]
 			local def=minetest.registered_tools[stack:get_name()]
 			if def and def.groups._industrialtest_nuclearReactorFuel then
 				local cluster={
@@ -79,60 +79,60 @@ local function findMaxFuelCluster(fuelList)
 						y=iy
 					}
 				}
-				if x>1 and fuelList[iy*4+x-1]:get_name()==stack:get_name() then
+				if x>1 and fuelList[iy*5+x-1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x-1,
 						y=iy
 					})
 				end
-				if x<5 and fuelList[iy*4+x+1]:get_name()==stack:get_name() then
+				if x<5 and fuelList[iy*5+x+1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x+1,
 						y=iy
 					})
 				end
-				if y>1 and fuelList[(iy-1)*4+x]:get_name()==stack:get_name() then
+				if y>1 and fuelList[(iy-1)*5+x]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x,
-						i=iy-1
+						y=iy-1
 					})
 				end
-				if y<4 and fuelList[(iy+1)*4+x]:get_name()==stack:get_name() then
+				if y<4 and fuelList[(iy+1)*5+x]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x,
 						y=iy+1
 					})
 				end
-				if x>1 and y>1 and fuelList[(iy-1)*4+x-1]:get_name()==stack:get_name() then
+				if x>1 and y>1 and fuelList[(iy-1)*5+x-1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x-1,
 						y=iy-1
 					})
 				end
-				if x<5 and y>1 and fuelList[(iy-1)*4+x+1]:get_name()==stack:get_name() then
+				if x<5 and y>1 and fuelList[(iy-1)*5+x+1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x+1,
 						y=iy-1
 					})
 				end
-				if x>1 and y<4 and fuelList[(iy+1)*4+x-1]:get_name()==stack:get_name() then
+				if x>1 and y<4 and fuelList[(iy+1)*5+x-1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x-1,
 						y=iy+1
 					})
 				end
-				if x<5 and y<4 and fuelList[(iy+1)*4+x+1]:get_name()==stack:get_name() then
+				if x<5 and y<4 and fuelList[(iy+1)*5+x+1]:get_name()==stack:get_name() then
 					table.insert(cluster,{
 						x=x+1,
 						y=iy+1
 					})
 				end
+				if #cluster==9 then
+					return cluster
+				end
 				if #cluster>#maxCluster then
 					maxCluster=cluster
 				end
-				if #cluster==4 then
-					return maxCluster
-				end
 			end
 		end
 	end
@@ -224,11 +224,11 @@ reactor.activeOnTimer=function(pos,elapsed,meta,inv)
 
 	local maxCluster=findMaxFuelCluster(fuelList)
 	for _,stack in ipairs(maxCluster) do
-		local index=stack.y*4+stack.x
+		local index=stack.y*5+stack.x
 		local usedStack,_=useFuel(fuelList[index],5)
 		inv:set_stack("fuel",index,usedStack)
 	end
-	local generatedPowerAmount=math.pow(20,#maxCluster)
+	local generatedPowerAmount=math.pow(3,#maxCluster)
 	if industrialtest.api.addPower(meta,generatedPowerAmount)>0 then
 		shouldUpdateFormspec=true
 	end
@@ -325,8 +325,8 @@ industrialtest.internal.registerMachine({
 	name="nuclear_reactor",
 	displayName=S("Nuclear Reactor"),
 	getFormspec=reactor.getFormspec,
-	capacity=industrialtest.api.ivPowerFlow*2,
-	flow=industrialtest.api.ivPowerFlow,
+	capacity=industrialtest.api.evPowerFlow,
+	flow=industrialtest.api.evPowerFlow,
 	ioConfig="oooooo",
 	requiresWrench=true,
 	registerActiveVariant=true,