Add generic ENLYZE power meter pipeline

db/power_meter_grafana.sql

@@ -0,0 +1,14 @@
+-- Set :meter, :from and :to from Grafana variables.
+-- Current power:
+SELECT timestamp AS "time", active_power_total_kw AS "value"
+FROM power_meter_readings WHERE meter = '${meter}' AND $__timeFilter(timestamp);
+
+-- Energy today / rolling 24h (counter increments are reset-safe).
+SELECT COALESCE(sum(energy_delta_kwh), 0) AS kwh
+FROM power_meter_readings
+WHERE meter = '${meter}' AND timestamp >= now() - interval '24 hours';
+
+-- Frequency and outages in selected period.
+SELECT min(grid_frequency_hz) AS frequency_min_hz, max(grid_frequency_hz) AS frequency_max_hz,
+       COALESCE(sum(outage_delta), 0) AS outages
+FROM power_meter_readings WHERE meter = '${meter}' AND $__timeFilter(timestamp);

db/schema.sql

@@ -46,3 +46,27 @@ CREATE TABLE IF NOT EXISTS material_application_snapshots (
 
 CREATE INDEX IF NOT EXISTS material_application_snapshots_machine_time_idx
     ON material_application_snapshots (calculation_id, machine_id, timestamp);
+
+CREATE TABLE IF NOT EXISTS power_meter_readings (
+    meter text NOT NULL,
+    timestamp timestamptz NOT NULL,
+    energy_total_kwh double precision NOT NULL,
+    energy_delta_kwh double precision NOT NULL,
+    active_power_total_kw double precision NOT NULL,
+    grid_frequency_hz double precision NOT NULL,
+    power_outages double precision NULL,
+    outage_delta double precision NULL,
+    phase_active_power_kw jsonb NOT NULL DEFAULT '{}'::jsonb,
+    PRIMARY KEY (meter, timestamp)
+);
+CREATE INDEX IF NOT EXISTS power_meter_readings_time_idx
+    ON power_meter_readings (meter, timestamp DESC);
+
+CREATE TABLE IF NOT EXISTS power_meter_monthly_reports (
+    meter text NOT NULL,
+    month text NOT NULL,
+    report_path text NOT NULL,
+    summary jsonb NOT NULL,
+    generated_at timestamptz NOT NULL DEFAULT now(),
+    PRIMARY KEY (meter, month)
+);