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finikwasherefinikwashere
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feat(grafana): add Trip Cost and Cost/100km panels to Drive Details
Add two new stat panels to the Drive Details internal dashboard that estimate the cost of a trip based on recent charging price data: - Trip Cost (est.): total estimated cost for the drive - Ø Cost / 100 <unit>: estimated cost per 100 km or 100 mi Cost/kWh is determined by a 3-tier lookup: 1. Average cost/kWh across all charging sessions that ended within the 24 hours before the drive started (the most relevant window) 2. Fallback: cost/kWh of the single most recent charge before the drive, if no sessions exist in the 24h window 3. N/A if no prior charge has cost data at all Both panels are placed at y=28 alongside the existing Distance driven and Elevation Summary panels (all resized to w=3 to fit on one row).
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Lines changed: 187 additions & 3 deletions

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‎grafana/dashboards/internal/drive-details.json‎

Lines changed: 187 additions & 3 deletions
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},
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"gridPos": {
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"h": 3,
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"w": 6,
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"w": 3,
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"x": 0,
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"y": 28
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},
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},
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"gridPos": {
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"h": 3,
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"w": 6,
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"x": 6,
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"w": 3,
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"x": 3,
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"y": 28
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},
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"id": 20,
@@ -2389,6 +2389,190 @@
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],
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"title": "Ø Speed",
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"type": "stat"
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},
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{
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"datasource": {
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"type": "grafana-postgresql-datasource",
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"uid": "TeslaMate"
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},
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"description": "Estimated trip cost. Cost/kWh uses the average of charges that ended within 24 h before this drive; if none have cost data, falls back to the single most recent charge before the trip.",
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"fieldConfig": {
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"defaults": {
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"decimals": 2,
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"mappings": [
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{
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"options": {
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"match": "null",
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"result": {
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"text": "N/A"
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}
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},
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"type": "special"
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}
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],
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{
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"color": "super-light-blue",
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"value": 0
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}
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]
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},
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"unit": "none"
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},
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"overrides": []
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},
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"gridPos": {
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"h": 3,
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"w": 3,
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"x": 6,
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"y": 28
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},
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"id": 41,
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"maxDataPoints": 100,
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"options": {
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"colorMode": "value",
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"graphMode": "none",
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"justifyMode": "center",
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"orientation": "auto",
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"percentChangeColorMode": "standard",
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"reduceOptions": {
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"calcs": [
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"lastNotNull"
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],
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"fields": "/.*/",
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"values": false
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},
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"showPercentChange": false,
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"textMode": "auto",
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"wideLayout": true
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},
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"pluginVersion": "12.4.0",
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"targets": [
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{
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"datasource": {
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"type": "grafana-postgresql-datasource",
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"uid": "TeslaMate"
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},
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"editorMode": "code",
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"format": "table",
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"rawQuery": true,
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"rawSql": "WITH drive AS (\n SELECT\n d.start_date,\n (start_${preferred_range}_range_km - end_${preferred_range}_range_km) * car.efficiency AS energy_kwh\n FROM drives d\n JOIN cars car ON car.id = d.car_id\n WHERE d.id = $drive_id\n),\nrecent_cost AS (\n SELECT sum(cp.cost) / NULLIF(sum(cp.charge_energy_added), 0) AS cost_per_kwh\n FROM charging_processes cp\n CROSS JOIN drive\n WHERE cp.car_id = $car_id\n AND cp.cost IS NOT NULL AND cp.charge_energy_added > 0\n AND cp.end_date <= drive.start_date\n AND cp.end_date >= drive.start_date - INTERVAL '24 hours'\n),\nlast_charge_cost AS (\n SELECT cp.cost / NULLIF(cp.charge_energy_added, 0) AS cost_per_kwh\n FROM charging_processes cp\n CROSS JOIN drive\n WHERE cp.car_id = $car_id\n AND cp.cost IS NOT NULL AND cp.charge_energy_added > 0\n AND cp.end_date <= drive.start_date\n ORDER BY cp.end_date DESC\n LIMIT 1\n),\neffective_cost AS (\n SELECT COALESCE(recent_cost.cost_per_kwh, last_charge_cost.cost_per_kwh) AS cost_per_kwh\n FROM last_charge_cost LEFT JOIN recent_cost ON true\n)\nSELECT ROUND((drive.energy_kwh * effective_cost.cost_per_kwh)::numeric, 2) AS \"Trip Cost\"\nFROM drive CROSS JOIN effective_cost",
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"refId": "A",
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"sql": {
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"columns": [
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{
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"parameters": [],
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"type": "function"
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}
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],
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"groupBy": [
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{
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"property": {
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"type": "string"
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},
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"type": "groupBy"
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}
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],
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"limit": 50
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}
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}
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],
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"title": "Trip Cost (est.)",
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"type": "stat"
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},
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{
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"datasource": {
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"type": "grafana-postgresql-datasource",
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"uid": "TeslaMate"
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},
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"description": "Estimated cost per 100 km/mi. Cost/kWh uses the average of charges that ended within 24 h before this drive; if none have cost data, falls back to the single most recent charge before the trip.",
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"fieldConfig": {
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"defaults": {
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"decimals": 2,
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"mappings": [
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{
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"options": {
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"match": "null",
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"result": {
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"text": "N/A"
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}
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},
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"type": "special"
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}
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],
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{
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"color": "super-light-blue",
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"value": 0
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}
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]
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},
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"unit": "none"
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},
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"overrides": []
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},
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"gridPos": {
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"h": 3,
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"w": 3,
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"x": 9,
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"y": 28
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},
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"id": 42,
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"maxDataPoints": 100,
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"options": {
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"colorMode": "value",
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"graphMode": "none",
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"justifyMode": "center",
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"orientation": "auto",
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"percentChangeColorMode": "standard",
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"reduceOptions": {
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"calcs": [
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"lastNotNull"
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],
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"fields": "/.*/",
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"values": false
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},
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"showPercentChange": false,
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"textMode": "auto",
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"wideLayout": true
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},
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"pluginVersion": "12.4.0",
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"targets": [
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{
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"datasource": {
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"type": "grafana-postgresql-datasource",
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"uid": "TeslaMate"
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},
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"editorMode": "code",
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"format": "table",
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"rawQuery": true,
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"rawSql": "WITH drive AS (\n SELECT\n d.start_date,\n (start_${preferred_range}_range_km - end_${preferred_range}_range_km) * car.efficiency AS energy_kwh,\n convert_km(d.distance::numeric, '$length_unit') AS dist\n FROM drives d\n JOIN cars car ON car.id = d.car_id\n WHERE d.id = $drive_id\n),\nrecent_cost AS (\n SELECT sum(cp.cost) / NULLIF(sum(cp.charge_energy_added), 0) AS cost_per_kwh\n FROM charging_processes cp\n CROSS JOIN drive\n WHERE cp.car_id = $car_id\n AND cp.cost IS NOT NULL AND cp.charge_energy_added > 0\n AND cp.end_date <= drive.start_date\n AND cp.end_date >= drive.start_date - INTERVAL '24 hours'\n),\nlast_charge_cost AS (\n SELECT cp.cost / NULLIF(cp.charge_energy_added, 0) AS cost_per_kwh\n FROM charging_processes cp\n CROSS JOIN drive\n WHERE cp.car_id = $car_id\n AND cp.cost IS NOT NULL AND cp.charge_energy_added > 0\n AND cp.end_date <= drive.start_date\n ORDER BY cp.end_date DESC\n LIMIT 1\n),\neffective_cost AS (\n SELECT COALESCE(recent_cost.cost_per_kwh, last_charge_cost.cost_per_kwh) AS cost_per_kwh\n FROM last_charge_cost LEFT JOIN recent_cost ON true\n)\nSELECT ROUND((drive.energy_kwh / NULLIF(drive.dist, 0) * 100 * effective_cost.cost_per_kwh)::numeric, 2) AS \"Ø Cost / 100 $length_unit\"\nFROM drive CROSS JOIN effective_cost",
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"refId": "A",
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"sql": {
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"columns": [
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{
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"parameters": [],
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"type": "function"
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}
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],
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"groupBy": [
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{
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"property": {
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"type": "string"
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},
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"type": "groupBy"
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}
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],
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"limit": 50
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}
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}
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],
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"title": "Ø Cost / 100 $length_unit",
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"type": "stat"
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}
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],
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"preload": false,

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