diff --git a/esphome/components/atm90e32/atm90e32.cpp b/esphome/components/atm90e32/atm90e32.cpp
index ee7fe5ce75..db29702c54 100644
--- a/esphome/components/atm90e32/atm90e32.cpp
+++ b/esphome/components/atm90e32/atm90e32.cpp
@@ -550,8 +550,8 @@ float ATM90E32Component::get_phase_harmonic_active_power_(uint8_t phase) {
 }
 
 float ATM90E32Component::get_phase_angle_(uint8_t phase) {
-  uint16_t val = this->read16_(ATM90E32_REGISTER_PANGLE + phase) / 10.0;
-  return (val > 180) ? (float) (val - 360.0f) : (float) val;
+  float val = this->read16_(ATM90E32_REGISTER_PANGLE + phase) / 10.0f;
+  return (val > 180.0f) ? val - 360.0f : val;
 }
 
 float ATM90E32Component::get_phase_peak_current_(uint8_t phase) {
diff --git a/esphome/components/atm90e32/atm90e32.h b/esphome/components/atm90e32/atm90e32.h
index 2524616470..c44a11e3ed 100644
--- a/esphome/components/atm90e32/atm90e32.h
+++ b/esphome/components/atm90e32/atm90e32.h
@@ -134,7 +134,6 @@ class ATM90E32Component : public PollingComponent,
   void set_freq_status_text_sensor(text_sensor::TextSensor *sensor) { this->freq_status_text_sensor_ = sensor; }
 #endif
   uint16_t calculate_voltage_threshold(int line_freq, uint16_t ugain, float multiplier);
-  int32_t last_periodic_millis = millis();
 
  protected:
 #ifdef USE_NUMBER