diff --git a/include/riden_modbus/riden_modbus.h b/include/riden_modbus/riden_modbus.h
index 0d60e0a..f303555 100644
--- a/include/riden_modbus/riden_modbus.h
+++ b/include/riden_modbus/riden_modbus.h
@@ -306,7 +306,7 @@ class RidenModbus
     double value_to_voltage(const uint16_t value);
     double value_to_voltage_in(const uint16_t value);
     double value_to_current(const uint16_t value);
-    double value_to_power(const uint16_t value);
+    double values_to_power(const uint16_t *values);
     uint16_t voltage_to_value(const double voltage);
     uint16_t current_to_value(const double current);
     double values_to_temperature(const uint16_t *values);
diff --git a/include/riden_modbus/riden_modbus_registers.h b/include/riden_modbus/riden_modbus_registers.h
index 248aff0..9b25e22 100644
--- a/include/riden_modbus/riden_modbus_registers.h
+++ b/include/riden_modbus/riden_modbus_registers.h
@@ -24,8 +24,8 @@ enum class Register {
     CurrentSet = 9,
     VoltageOut = 10,
     CurrentOut = 11,
-    AH = 12, // ???
-    PowerOut = 13,
+    PowerOut_H = 12,
+    PowerOut_L = 13,
     VoltageIn = 14,
     Keypad = 15,
     Protection = 16, // OVP_OCP
diff --git a/src/riden_modbus/riden_modbus.cpp b/src/riden_modbus/riden_modbus.cpp
index c1363a5..deeddfe 100644
--- a/src/riden_modbus/riden_modbus.cpp
+++ b/src/riden_modbus/riden_modbus.cpp
@@ -122,7 +122,7 @@ bool RidenModbus::get_all_values(AllValues &all_values)
     all_values.current_set = value_to_current(values[+Register::CurrentSet]);
     all_values.voltage_out = value_to_voltage(values[+Register::VoltageOut]);
     all_values.current_out = value_to_current(values[+Register::CurrentOut]);
-    all_values.power_out = value_to_power(values[+Register::PowerOut]);
+    all_values.power_out = values_to_power(&(values[+Register::PowerOut_H]));
     all_values.voltage_in = value_to_voltage_in(values[+Register::VoltageIn]);
     all_values.keypad_locked = values[+Register::Keypad] != 0;
     all_values.protection = value_to_protection(values[+Register::Protection]);
@@ -237,7 +237,7 @@ bool RidenModbus::get_current_out(double &current)
 
 bool RidenModbus::get_power_out(double &power)
 {
-    return read_power(Register::PowerOut, power);
+    return read_power(Register::PowerOut_H, power);
 }
 
 bool RidenModbus::is_keypad_locked(bool &keypad)
@@ -624,11 +624,11 @@ bool RidenModbus::write_current(const Register reg, const double current)
 
 bool RidenModbus::read_power(const Register reg, double &power)
 {
-    uint16_t value;
-    if (!read_holding_registers(reg, &value)) {
+    uint16_t values[2];
+    if (!read_holding_registers(reg, values, 2)) {
         return false;
     }
-    power = value_to_power(value);
+    power = values_to_power(values);
     return true;
 }
 
@@ -739,8 +739,9 @@ double RidenModbus::value_to_current(const uint16_t value)
     return double(value) / i_multi;
 }
 
-double RidenModbus::value_to_power(const uint16_t value)
+double RidenModbus::values_to_power(const uint16_t *values)
 {
+    uint32_t value = (values[0] << 16) + values[1];
     return double(value) / p_multi;
 }