diff --git a/src/hud.rs b/src/hud.rs
index 1f7cbae..44c99da 100644
--- a/src/hud.rs
+++ b/src/hud.rs
@@ -26,7 +26,7 @@ fn setup(
     settings: Res<settings::Settings>,
     asset_server: Res<AssetServer>,
 ) {
-    let visibility = if settings.ar_active {
+    let visibility = if settings.hud_active {
         Visibility::Inherited
     } else {
         Visibility::Hidden
@@ -51,7 +51,25 @@ fn setup(
             }
         ),
         TextSection::new(
-            "\n  OXYGEN ",
+            "\n  电量 ",
+            TextStyle {
+                font: asset_server.load(FONT),
+                font_size: settings.font_size_hud,
+                color: Color::GRAY,
+                ..default()
+            },
+        ),
+        TextSection::new(
+            "",
+            TextStyle {
+                font: asset_server.load(FONT),
+                font_size: settings.font_size_hud,
+                color: Color::GRAY,
+                ..default()
+            }
+        ),
+        TextSection::new(
+            "\n  氧 OXYGEN ",
             TextStyle {
                 font: asset_server.load(FONT),
                 font_size: settings.font_size_hud,
@@ -109,10 +127,12 @@ fn update(
                     text.sections[1].value = format!("{value:.0}");
                 }
             }
+            let power = playervars.power;
+            text.sections[3].value = format!("{power:}Wh");
             let oxygen = playervars.oxygen * 100.0;
-            text.sections[3].value = format!("{oxygen:.1}%");
+            text.sections[5].value = format!("{oxygen:.1}%");
             let adrenaline = playervars.adrenaline * 990.0 + 10.0;
-            text.sections[5].value = format!("{adrenaline:.0}pg/mL");
+            text.sections[7].value = format!("{adrenaline:.0}pg/mL");
         }
     }
 }
diff --git a/src/player.rs b/src/player.rs
index ced91e9..85b1cc3 100644
--- a/src/player.rs
+++ b/src/player.rs
@@ -1,3 +1,4 @@
+use crate::settings;
 use bevy::prelude::*;
 use bevy::window::PrimaryWindow;
 
@@ -18,11 +19,39 @@ impl Default for Player {
     }
 }
 
+pub enum SuitSystemHandler {
+    Heat,
+    None,
+}
+
+#[derive(Component)]
+pub struct PlayerEntity;
+
+#[derive(Component)]
+pub struct SuitSystem {
+    pub name: String,
+    pub active: bool,
+    pub power: f32,
+    pub handler: SuitSystemHandler,
+}
+
+impl Default for SuitSystem {
+    fn default() -> Self {
+        Self {
+            name: "Untitled".to_string(),
+            active: true,
+            power: 0.0,
+            handler: SuitSystemHandler::None,
+        }
+    }
+}
+
 #[derive(Resource)]
 pub struct PlayerVars {
     pub oxygen: f32,
     pub adrenaline: f32,
     pub adrenaline_jolt: f32,
+    pub power: f32,
 }
 
 impl Default for PlayerVars {
@@ -31,12 +60,30 @@ impl Default for PlayerVars {
             oxygen: 0.1984,
             adrenaline: 0.1,
             adrenaline_jolt: 0.5,
+            power: 6200.0,
         }
     }
 }
 
-pub fn setup(mut commands: Commands) {
+pub fn setup(
+    mut commands: Commands,
+    settings: Res<settings::Settings>,
+) {
     commands.spawn(Player::default());
+    commands.spawn((
+        PlayerEntity,
+        SuitSystem {
+            name: "HUD".to_string(),
+            active: settings.hud_active,
+            power: -0.05,
+            ..default()
+        },
+        SuitSystem {
+            name: "Heater".to_string(),
+            handler: SuitSystemHandler::Heat,
+            ..default()
+        }
+    ));
 }
 
 pub fn handle_input(
diff --git a/src/settings.rs b/src/settings.rs
index 044614f..f590317 100644
--- a/src/settings.rs
+++ b/src/settings.rs
@@ -9,7 +9,7 @@ pub struct Settings {
     pub font_size_hud: f32,
     pub font_size_conversations: f32,
     pub key_togglehud: KeyCode,
-    pub ar_active: bool,
+    pub hud_active: bool,
 }
 
 impl Default for Settings {
@@ -22,7 +22,7 @@ impl Default for Settings {
             font_size_hud: 32.0,
             font_size_conversations: 32.0,
             key_togglehud: KeyCode::Tab,
-            ar_active: true,
+            hud_active: true,
         }
     }
 }