diff --git a/automations.yaml b/automations.yaml
index 375af6b..e15bc4e 100644
--- a/automations.yaml
+++ b/automations.yaml
@@ -151,3 +151,27 @@
           all {{ fleet | length }} fleet sensors OK
         {% endif %}
   mode: single
+- id: pfv_plant_temp_rising_fast
+  alias: PFV plant - temperature rising fast (rate-of-change)
+  description: Catches dead AC minutes before the 104F threshold trips.
+  triggers:
+  - trigger: state
+    entity_id:
+    - binary_sensor.server_room_temp_rising
+    - binary_sensor.tsys6_ambient_rising
+    - binary_sensor.tsys7_inlet_rising
+    - binary_sensor.garage_temp_rising
+    to: "on"
+    for:
+      minutes: 2
+  actions:
+  - action: notify.send_message
+    target:
+      entity_id:
+      - notify.ultix_sidecar_new
+      - notify.allthes_ipad
+    data:
+      title: TEMP RISING FAST
+      message: '{{ trigger.entity_id }} climbing ~10F/15min — check cooling
+        before the 104F threshold. (rate-of-change early warning)'
+  mode: single
diff --git a/packages/plant_snmp.yaml b/packages/plant_snmp.yaml
index 378d1fe..de8c786 100644
--- a/packages/plant_snmp.yaml
+++ b/packages/plant_snmp.yaml
@@ -339,3 +339,46 @@ template:
         state: >-
           {% set a = states('sensor.pfv_garage_pdu_output_current') | float(-1) %}
           {{ (a * 120) | round(0) if a >= 0 }}
+
+# --- Rate-of-change early warning (#682): +10°F/15min = AC trouble [#344] ---
+binary_sensor:
+  - platform: trend
+    sensors:
+      server_room_temp_rising:
+        entity_id: sensor.pfv_tsys1_rack_temperature
+        sample_duration: 900
+        min_gradient: 0.011
+        unique_id: trend_server_room_rising
+      tsys6_ambient_rising:
+        entity_id: sensor.pfv_tsys6_drac_ambient
+        sample_duration: 900
+        min_gradient: 0.011
+        unique_id: trend_tsys6_ambient_rising
+      tsys7_inlet_rising:
+        entity_id: sensor.pfv_tsys7_drac_inlet
+        sample_duration: 900
+        min_gradient: 0.011
+        unique_id: trend_tsys7_inlet_rising
+      garage_temp_rising:
+        entity_id: sensor.pfv_garage_temperature
+        sample_duration: 900
+        min_gradient: 0.011
+        unique_id: trend_garage_rising
+
+# --- Garage PDU energy (kWh) from watts [#344] ---
+sensor:
+  - platform: integration
+    source: sensor.pfv_garage_pdu_power
+    name: pfv garage PDU energy
+    round: 2
+    unit_prefix: k
+    unit_time: h
+    method: left
+    unique_id: pfv_garage_pdu_energy
+
+utility_meter:
+  garage_pdu_daily:
+    source: sensor.pfv_garage_pdu_energy
+    name: Garage PDU daily energy
+    unique_id: garage_pdu_daily_energy
+    cycle: daily