diff --git a/docs/Various/Infra.md b/docs/Various/Infra.md
index b98feb8..ee49173 100644
--- a/docs/Various/Infra.md
+++ b/docs/Various/Infra.md
@@ -1,3 +1,18 @@
+# Various
+
+## Electric flowchart
+```mermaid
+flowchart LR
+
+GRID[Grid] --> EPS[EPS EcoFlow River 288Wh]
+EPS --> USB[USB Charging for smartphone, etc.]
+EPS --> LIGHT[Emergency light]
+EPS --> EMERGENCY_AC[Emergency AC outlet for boiler, etc.]
+EPS ---> UPS[UPS CyberPower CP375JP 8.5Wh]
+UPS --> ROUTER[OpenWrt Router]
+UPS --> DESKTOP[Deskstop]
+UPS --> MONITOR[Monitor]
+```
 
 ## Internet flowchart