diff --git a/esphome/const.py b/esphome/const.py
index e61af6c5b5..5e551efc2c 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -1096,7 +1096,7 @@ UNIT_KILOMETER_PER_HOUR = "km/h"
 UNIT_KILOVOLT_AMPS = "kVA"
 UNIT_KILOVOLT_AMPS_HOURS = "kVAh"
 UNIT_KILOVOLT_AMPS_REACTIVE = "kVAR"
-UNIT_KILOVOLT_AMPS_REACTIVE_HOURS = "kVARh"
+UNIT_KILOVOLT_AMPS_REACTIVE_HOURS = "kvarh"
 UNIT_KILOWATT = "kW"
 UNIT_KILOWATT_HOURS = "kWh"
 UNIT_LITRE = "L"
@@ -1132,7 +1132,7 @@ UNIT_VOLT = "V"
 UNIT_VOLT_AMPS = "VA"
 UNIT_VOLT_AMPS_HOURS = "VAh"
 UNIT_VOLT_AMPS_REACTIVE = "var"
-UNIT_VOLT_AMPS_REACTIVE_HOURS = "VARh"
+UNIT_VOLT_AMPS_REACTIVE_HOURS = "varh"
 UNIT_WATT = "W"
 UNIT_WATT_HOURS = "Wh"