diff --git a/esphome/components/growatt_solar/sensor.py b/esphome/components/growatt_solar/sensor.py
index 4961595505..f95d679c3e 100644
--- a/esphome/components/growatt_solar/sensor.py
+++ b/esphome/components/growatt_solar/sensor.py
@@ -52,7 +52,7 @@ GrowattSolar = growatt_solar_ns.class_(
 PHASE_SENSORS = {
     CONF_VOLTAGE: sensor.sensor_schema(
         unit_of_measurement=UNIT_VOLT,
-        accuracy_decimals=2,
+        accuracy_decimals=1,
         device_class=DEVICE_CLASS_VOLTAGE,
     ),
     CONF_CURRENT: sensor.sensor_schema(
@@ -71,7 +71,7 @@ PHASE_SENSORS = {
 PV_SENSORS = {
     CONF_VOLTAGE: sensor.sensor_schema(
         unit_of_measurement=UNIT_VOLT,
-        accuracy_decimals=2,
+        accuracy_decimals=1,
         device_class=DEVICE_CLASS_VOLTAGE,
     ),
     CONF_CURRENT: sensor.sensor_schema(
@@ -135,13 +135,13 @@ CONFIG_SCHEMA = (
             ),
             cv.Optional(CONF_ENERGY_PRODUCTION_DAY): sensor.sensor_schema(
                 unit_of_measurement=UNIT_KILOWATT_HOURS,
-                accuracy_decimals=2,
+                accuracy_decimals=1,
                 device_class=DEVICE_CLASS_ENERGY,
                 state_class=STATE_CLASS_TOTAL_INCREASING,
             ),
             cv.Optional(CONF_TOTAL_ENERGY_PRODUCTION): sensor.sensor_schema(
                 unit_of_measurement=UNIT_KILOWATT_HOURS,
-                accuracy_decimals=0,
+                accuracy_decimals=1,
                 device_class=DEVICE_CLASS_ENERGY,
                 state_class=STATE_CLASS_TOTAL_INCREASING,
             ),