diff --git a/homeassistant/components/apcupsd/sensor.py b/homeassistant/components/apcupsd/sensor.py
index 44c1c498c28..3a8619a092f 100644
--- a/homeassistant/components/apcupsd/sensor.py
+++ b/homeassistant/components/apcupsd/sensor.py
@@ -7,6 +7,8 @@ import voluptuous as vol
 from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
     CONF_RESOURCES,
+    ELECTRICAL_CURRENT_AMPERE,
+    ELECTRICAL_VOLT_AMPERE,
     FREQUENCY_HERTZ,
     POWER_WATT,
     TEMP_CELSIUS,
@@ -67,9 +69,9 @@ SENSOR_TYPES = {
     "nominv": ["Nominal Input Voltage", VOLT, "mdi:flash"],
     "nomoutv": ["Nominal Output Voltage", VOLT, "mdi:flash"],
     "nompower": ["Nominal Output Power", POWER_WATT, "mdi:flash"],
-    "nomapnt": ["Nominal Apparent Power", "VA", "mdi:flash"],
+    "nomapnt": ["Nominal Apparent Power", ELECTRICAL_VOLT_AMPERE, "mdi:flash"],
     "numxfers": ["Transfer Count", "", "mdi:counter"],
-    "outcurnt": ["Output Current", "A", "mdi:flash"],
+    "outcurnt": ["Output Current", ELECTRICAL_CURRENT_AMPERE, "mdi:flash"],
     "outputv": ["Output Voltage", VOLT, "mdi:flash"],
     "reg1": ["Register 1 Fault", "", "mdi:information-outline"],
     "reg2": ["Register 2 Fault", "", "mdi:information-outline"],
@@ -98,8 +100,8 @@ INFERRED_UNITS = {
     " Seconds": TIME_SECONDS,
     " Percent": UNIT_PERCENTAGE,
     " Volts": VOLT,
-    " Ampere": "A",
-    " Volt-Ampere": "VA",
+    " Ampere": ELECTRICAL_CURRENT_AMPERE,
+    " Volt-Ampere": ELECTRICAL_VOLT_AMPERE,
     " Watts": POWER_WATT,
     " Hz": FREQUENCY_HERTZ,
     " C": TEMP_CELSIUS,
diff --git a/homeassistant/components/growatt_server/sensor.py b/homeassistant/components/growatt_server/sensor.py
index 6bfdf7f2552..c228bcbe4ab 100644
--- a/homeassistant/components/growatt_server/sensor.py
+++ b/homeassistant/components/growatt_server/sensor.py
@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_PASSWORD,
     CONF_USERNAME,
+    ELECTRICAL_CURRENT_AMPERE,
     ENERGY_KILO_WATT_HOUR,
     FREQUENCY_HERTZ,
     POWER_WATT,
@@ -61,17 +62,37 @@ INVERTER_SENSOR_TYPES = {
         "power",
     ),
     "inverter_voltage_input_1": ("Input 1 voltage", VOLT, "vpv1", None),
-    "inverter_amperage_input_1": ("Input 1 Amperage", "A", "ipv1", None),
+    "inverter_amperage_input_1": (
+        "Input 1 Amperage",
+        ELECTRICAL_CURRENT_AMPERE,
+        "ipv1",
+        None,
+    ),
     "inverter_wattage_input_1": ("Input 1 Wattage", POWER_WATT, "ppv1", "power"),
     "inverter_voltage_input_2": ("Input 2 voltage", VOLT, "vpv2", None),
-    "inverter_amperage_input_2": ("Input 2 Amperage", "A", "ipv2", None),
+    "inverter_amperage_input_2": (
+        "Input 2 Amperage",
+        ELECTRICAL_CURRENT_AMPERE,
+        "ipv2",
+        None,
+    ),
     "inverter_wattage_input_2": ("Input 2 Wattage", POWER_WATT, "ppv2", "power"),
     "inverter_voltage_input_3": ("Input 3 voltage", VOLT, "vpv3", None),
-    "inverter_amperage_input_3": ("Input 3 Amperage", "A", "ipv3", None),
+    "inverter_amperage_input_3": (
+        "Input 3 Amperage",
+        ELECTRICAL_CURRENT_AMPERE,
+        "ipv3",
+        None,
+    ),
     "inverter_wattage_input_3": ("Input 3 Wattage", POWER_WATT, "ppv3", "power"),
     "inverter_internal_wattage": ("Internal wattage", POWER_WATT, "ppv", "power"),
     "inverter_reactive_voltage": ("Reactive voltage", VOLT, "vacr", None),
-    "inverter_inverter_reactive_amperage": ("Reactive amperage", "A", "iacr", None),
+    "inverter_inverter_reactive_amperage": (
+        "Reactive amperage",
+        ELECTRICAL_CURRENT_AMPERE,
+        "iacr",
+        None,
+    ),
     "inverter_frequency": ("AC frequency", FREQUENCY_HERTZ, "fac", None),
     "inverter_current_wattage": ("Output power", POWER_WATT, "pac", "power"),
     "inverter_current_reactive_wattage": (
diff --git a/homeassistant/components/juicenet/sensor.py b/homeassistant/components/juicenet/sensor.py
index e7408cf9f85..c5d37cb8180 100644
--- a/homeassistant/components/juicenet/sensor.py
+++ b/homeassistant/components/juicenet/sensor.py
@@ -2,6 +2,7 @@
 import logging
 
 from homeassistant.const import (
+    ELECTRICAL_CURRENT_AMPERE,
     ENERGY_WATT_HOUR,
     POWER_WATT,
     TEMP_CELSIUS,
@@ -19,7 +20,7 @@ SENSOR_TYPES = {
     "status": ["Charging Status", None],
     "temperature": ["Temperature", TEMP_CELSIUS],
     "voltage": ["Voltage", VOLT],
-    "amps": ["Amps", "A"],
+    "amps": ["Amps", ELECTRICAL_CURRENT_AMPERE],
     "watts": ["Watts", POWER_WATT],
     "charge_time": ["Charge time", TIME_SECONDS],
     "energy_added": ["Energy added", ENERGY_WATT_HOUR],
diff --git a/homeassistant/components/keba/sensor.py b/homeassistant/components/keba/sensor.py
index d9e6118ff32..443e1bcd1bc 100644
--- a/homeassistant/components/keba/sensor.py
+++ b/homeassistant/components/keba/sensor.py
@@ -1,7 +1,11 @@
 """Support for KEBA charging station sensors."""
 import logging
 
-from homeassistant.const import DEVICE_CLASS_POWER, ENERGY_KILO_WATT_HOUR
+from homeassistant.const import (
+    DEVICE_CLASS_POWER,
+    ELECTRICAL_CURRENT_AMPERE,
+    ENERGY_KILO_WATT_HOUR,
+)
 from homeassistant.helpers.entity import Entity
 
 from . import DOMAIN
@@ -17,7 +21,14 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
     keba = hass.data[DOMAIN]
 
     sensors = [
-        KebaSensor(keba, "Curr user", "Max Current", "max_current", "mdi:flash", "A"),
+        KebaSensor(
+            keba,
+            "Curr user",
+            "Max Current",
+            "max_current",
+            "mdi:flash",
+            ELECTRICAL_CURRENT_AMPERE,
+        ),
         KebaSensor(
             keba,
             "Setenergy",
diff --git a/homeassistant/components/mysensors/sensor.py b/homeassistant/components/mysensors/sensor.py
index 15876163762..d170f476158 100644
--- a/homeassistant/components/mysensors/sensor.py
+++ b/homeassistant/components/mysensors/sensor.py
@@ -4,6 +4,8 @@ from homeassistant.components.sensor import DOMAIN
 from homeassistant.const import (
     CONDUCTIVITY,
     DEGREE,
+    ELECTRICAL_CURRENT_AMPERE,
+    ELECTRICAL_VOLT_AMPERE,
     ENERGY_KILO_WATT_HOUR,
     FREQUENCY_HERTZ,
     LENGTH_METERS,
@@ -41,12 +43,12 @@ SENSORS = {
         "S_LIGHT_LEVEL": ["lx", "mdi:white-balance-sunny"],
     },
     "V_VOLTAGE": [VOLT, "mdi:flash"],
-    "V_CURRENT": ["A", "mdi:flash-auto"],
+    "V_CURRENT": [ELECTRICAL_CURRENT_AMPERE, "mdi:flash-auto"],
     "V_PH": ["pH", None],
     "V_ORP": ["mV", None],
     "V_EC": [CONDUCTIVITY, None],
     "V_VAR": ["var", None],
-    "V_VA": ["VA", None],
+    "V_VA": [ELECTRICAL_VOLT_AMPERE, None],
 }
 
 
diff --git a/homeassistant/components/nut/const.py b/homeassistant/components/nut/const.py
index 9b4908530a8..47959108a2c 100644
--- a/homeassistant/components/nut/const.py
+++ b/homeassistant/components/nut/const.py
@@ -5,6 +5,8 @@ from homeassistant.components.sensor import (
     DEVICE_CLASS_TEMPERATURE,
 )
 from homeassistant.const import (
+    ELECTRICAL_CURRENT_AMPERE,
+    ELECTRICAL_VOLT_AMPERE,
     FREQUENCY_HERTZ,
     POWER_WATT,
     TEMP_CELSIUS,
@@ -61,8 +63,8 @@ SENSOR_TYPES = {
     "ups.display.language": ["Language", "", "mdi:information-outline", None],
     "ups.contacts": ["External Contacts", "", "mdi:information-outline", None],
     "ups.efficiency": ["Efficiency", UNIT_PERCENTAGE, "mdi:gauge", None],
-    "ups.power": ["Current Apparent Power", "VA", "mdi:flash", None],
-    "ups.power.nominal": ["Nominal Power", "VA", "mdi:flash", None],
+    "ups.power": ["Current Apparent Power", ELECTRICAL_VOLT_AMPERE, "mdi:flash", None],
+    "ups.power.nominal": ["Nominal Power", ELECTRICAL_VOLT_AMPERE, "mdi:flash", None],
     "ups.realpower": [
         "Current Real Power",
         POWER_WATT,
@@ -107,8 +109,18 @@ SENSOR_TYPES = {
     "battery.voltage.low": ["Low Battery Voltage", VOLT, "mdi:flash", None],
     "battery.voltage.high": ["High Battery Voltage", VOLT, "mdi:flash", None],
     "battery.capacity": ["Battery Capacity", "Ah", "mdi:flash", None],
-    "battery.current": ["Battery Current", "A", "mdi:flash", None],
-    "battery.current.total": ["Total Battery Current", "A", "mdi:flash", None],
+    "battery.current": [
+        "Battery Current",
+        ELECTRICAL_CURRENT_AMPERE,
+        "mdi:flash",
+        None,
+    ],
+    "battery.current.total": [
+        "Total Battery Current",
+        ELECTRICAL_CURRENT_AMPERE,
+        "mdi:flash",
+        None,
+    ],
     "battery.temperature": [
         "Battery Temperature",
         TEMP_CELSIUS,
@@ -168,8 +180,13 @@ SENSOR_TYPES = {
         "mdi:information-outline",
         None,
     ],
-    "output.current": ["Output Current", "A", "mdi:flash", None],
-    "output.current.nominal": ["Nominal Output Current", "A", "mdi:flash", None],
+    "output.current": ["Output Current", ELECTRICAL_CURRENT_AMPERE, "mdi:flash", None],
+    "output.current.nominal": [
+        "Nominal Output Current",
+        ELECTRICAL_CURRENT_AMPERE,
+        "mdi:flash",
+        None,
+    ],
     "output.voltage": ["Output Voltage", VOLT, "mdi:flash", None],
     "output.voltage.nominal": ["Nominal Output Voltage", VOLT, "mdi:flash", None],
     "output.frequency": ["Output Frequency", FREQUENCY_HERTZ, "mdi:flash", None],
diff --git a/homeassistant/components/onewire/sensor.py b/homeassistant/components/onewire/sensor.py
index 12a4546dbeb..f12d3ab2346 100644
--- a/homeassistant/components/onewire/sensor.py
+++ b/homeassistant/components/onewire/sensor.py
@@ -11,6 +11,7 @@ from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
     CONF_HOST,
     CONF_PORT,
+    ELECTRICAL_CURRENT_AMPERE,
     TEMP_CELSIUS,
     UNIT_PERCENTAGE,
     VOLT,
@@ -84,7 +85,7 @@ SENSOR_TYPES = {
     "voltage": ["voltage", VOLT],
     "voltage_VAD": ["voltage", VOLT],
     "voltage_VDD": ["voltage", VOLT],
-    "current": ["current", "A"],
+    "current": ["current", ELECTRICAL_CURRENT_AMPERE],
 }
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
diff --git a/homeassistant/components/smappee/sensor.py b/homeassistant/components/smappee/sensor.py
index cb252dda98b..9558bbc2e62 100644
--- a/homeassistant/components/smappee/sensor.py
+++ b/homeassistant/components/smappee/sensor.py
@@ -4,6 +4,7 @@ import logging
 
 from homeassistant.const import (
     DEGREE,
+    ELECTRICAL_CURRENT_AMPERE,
     ENERGY_KILO_WATT_HOUR,
     POWER_WATT,
     UNIT_PERCENTAGE,
@@ -26,7 +27,7 @@ SENSOR_TYPES = {
         POWER_WATT,
         "active_power",
     ],
-    "current": ["Current", "mdi:gauge", "local", "A", "current"],
+    "current": ["Current", "mdi:gauge", "local", ELECTRICAL_CURRENT_AMPERE, "current"],
     "voltage": ["Voltage", "mdi:gauge", "local", VOLT, "voltage"],
     "active_cosfi": [
         "Power Factor",
diff --git a/homeassistant/components/solaredge_local/sensor.py b/homeassistant/components/solaredge_local/sensor.py
index 94aa06c2647..59b0a5e8856 100644
--- a/homeassistant/components/solaredge_local/sensor.py
+++ b/homeassistant/components/solaredge_local/sensor.py
@@ -12,6 +12,7 @@ from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
     CONF_IP_ADDRESS,
     CONF_NAME,
+    ELECTRICAL_CURRENT_AMPERE,
     ENERGY_WATT_HOUR,
     FREQUENCY_HERTZ,
     POWER_WATT,
@@ -103,7 +104,7 @@ SENSOR_TYPES = {
     "optimizer_current": [
         "optimizercurrent",
         "Average Optimizer Current",
-        "A",
+        ELECTRICAL_CURRENT_AMPERE,
         "mdi:solar-panel",
         None,
     ],
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 11a99515d60..2ff1d65223b 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -357,6 +357,10 @@ VOLT = "V"
 ENERGY_WATT_HOUR = f"{POWER_WATT}h"
 ENERGY_KILO_WATT_HOUR = f"k{ENERGY_WATT_HOUR}"
 
+# Electrical units
+ELECTRICAL_CURRENT_AMPERE = "A"
+ELECTRICAL_VOLT_AMPERE = f"{VOLT}{ELECTRICAL_CURRENT_AMPERE}"
+
 # Degree units
 DEGREE = "°"