From 213a8e2c212e0abe55098099f3114e99c2a98761 Mon Sep 17 00:00:00 2001
From: Giovanni Iachello <60585229+giachello@users.noreply.github.com>
Date: Thu, 26 May 2022 11:44:42 -0700
Subject: [PATCH] fix: improve handling on 0 Watts spurious power reads (#317)

closes #287
---
 teslajsonpy/homeassistant/power.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/teslajsonpy/homeassistant/power.py b/teslajsonpy/homeassistant/power.py
index 80ab3324..c89558c5 100644
--- a/teslajsonpy/homeassistant/power.py
+++ b/teslajsonpy/homeassistant/power.py
@@ -134,9 +134,15 @@ def refresh(self) -> None:
         """
         super().refresh()
         data = self._controller.get_power_params(self._id)
+
         if data:
             # Note: Some systems that pre-date Tesla aquisition of SolarCity will have `grid_status: Unknown`,
-            # but will have solar power values
+            # but will have solar power values. At the same time, newer systems will report spurious reads of 0 Watts
+            # and grid status unknown. If solar power is 0 return null.
+            if "grid_status" in data and data["grid_status"] == "Unknown" and data["solar_power"] == 0:
+                _LOGGER.debug("Spurious energy site power read")
+                return
+
             self.__power = data["solar_power"]
             if data["solar_power"] is not None:
                 self.__generating_status = (