diff --git a/satrs-core/src/lib.rs b/satrs-core/src/lib.rs
index 51ee886..f4e0a9d 100644
--- a/satrs-core/src/lib.rs
+++ b/satrs-core/src/lib.rs
@@ -34,5 +34,6 @@ pub mod pus;
 pub mod res_code;
 pub mod seq_count;
 pub mod tmtc;
+pub mod power;
 
 pub use spacepackets;
diff --git a/satrs-core/src/power.rs b/satrs-core/src/power.rs
new file mode 100644
index 0000000..cc00e2b
--- /dev/null
+++ b/satrs-core/src/power.rs
@@ -0,0 +1,28 @@
+
+pub trait PowerSwitch {
+    fn switch_on(&mut self);
+    fn switch_off(&mut self);
+
+    fn is_switch_on(&self) -> bool {
+        self.switch_state() == SwitchState::On
+    }
+
+    fn switch_state(&self) -> SwitchState;
+}
+
+pub enum SwitchState {
+    Off = 0,
+    On = 1,
+    Unknown = 2
+}
+
+pub trait PowerSwitcher {
+    fn send_switch_on_cmd(&mut self, switch_nr: u16);
+    fn send_switch_off_cmd(&mut self, switch_nr: u16);
+
+    fn get_switch_state(&mut self, switch_nr: u16) -> SwitchState;
+
+    fn get_is_switch_on(&mut self) -> bool {
+        self.get_switch_state() == SwitchState::On
+    }
+}
\ No newline at end of file