diff --git a/packages/xo-server-load-balancer/src/density-plan.js b/packages/xo-server-load-balancer/src/density-plan.js
index 25019c1c0..c3064ec76 100644
--- a/packages/xo-server-load-balancer/src/density-plan.js
+++ b/packages/xo-server-load-balancer/src/density-plan.js
@@ -3,9 +3,7 @@ import clone from 'lodash.clonedeep'
 import { default as mapToArray } from 'lodash.map'
 
 import Plan from './plan'
-import {
-  debug
-} from './utils'
+import { debug } from './utils'
 
 // ===================================================================
 
diff --git a/packages/xo-server-load-balancer/src/performance-plan.js b/packages/xo-server-load-balancer/src/performance-plan.js
index 981a2e627..f372c2d21 100644
--- a/packages/xo-server-load-balancer/src/performance-plan.js
+++ b/packages/xo-server-load-balancer/src/performance-plan.js
@@ -1,5 +1,6 @@
 import filter from 'lodash.filter'
 import find from 'lodash.find'
+import { default as mapToArray } from 'lodash.map'
 
 import Plan from './plan'
 import { debug } from './utils'
@@ -36,6 +37,21 @@ export default class PerformancePlan extends Plan {
   }
 
   async execute () {
+    // Try to power on a hosts set.
+    try {
+      await Promise.all(
+        mapToArray(
+          filter(this._getHosts({ powerState: 'Halted' }), host => host.powerOnMode !== ''),
+          host => {
+            const { id } = host
+            return this.xo.getXapi(id).powerOnHost(id)
+          }
+        )
+      )
+    } catch (error) {
+      console.error(error)
+    }
+
     const results = await this._findHostsToOptimize()
 
     if (!results) {
diff --git a/packages/xo-server-load-balancer/src/plan.js b/packages/xo-server-load-balancer/src/plan.js
index 2f24b0ce9..274368355 100644
--- a/packages/xo-server-load-balancer/src/plan.js
+++ b/packages/xo-server-load-balancer/src/plan.js
@@ -186,11 +186,11 @@ export default class Plan {
   }
 
   // Compute hosts for each pool. They can change over time.
-  _getHosts () {
+  _getHosts ({ powerState = 'Running' } = {}) {
     return filter(this.xo.getObjects(), object => (
       object.type === 'host' &&
       includes(this._poolIds, object.$poolId) &&
-      object.power_state !== 'Halted' &&
+      object.power_state === powerState &&
       !includes(this._excludedHosts, object.id)
     ))
   }