KNX Energy Dashboard with ARISTO BewO: kWh Trending, Peak Demand Alerts and ISO 50001

BewO energy module configuration — adding a zone data point

BewO Energy Module → Add data point:

Data point name:   "HVAC Total Power"
Group address:     6/0/0 (linked to Intesis KNX output)
DPT:               DPT 13.010 (4-byte signed, kW)
Unit:              kW
Logging interval:  15 minutes (averaging: arithmetic mean)
Display:           Real-time tile + trend chart

Data point name:   "HVAC Import kWh"
Group address:     6/0/1 (energy accumulator)
DPT:               DPT 12.001 (4-byte unsigned, kWh)
Unit:              kWh
Logging interval:  15 minutes (pulse counter: delta between readings)
Display:           Daily/weekly/monthly bar chart

Repeat for each zone:
  Lighting:        GA 6/1/0 (kW), GA 6/1/1 (kWh)
  Transport:       GA 6/2/0 (kW), GA 6/2/1 (kWh)
  DHW:             GA 6/3/0 (kW), GA 6/3/1 (kWh)
  Small power:     GA 6/4/0 (kW), GA 6/4/1 (kWh)

Dashboard view:    BewO → Energy → Overview
  → Real-time kW tiles for each zone (colour coded)
  → Total building consumption = sum of all zones
  → Trend selection: last 24h, 7 days, 30 days, 12 months

BewO peak demand alert configuration

Alarm object: "Peak Demand Warning"
  Group address:   6/9/0 (total building power, DPT 13.010 kW)
  Alarm condition: Value > 80 (threshold = 80 kW = 80% of 100 kW contract)
  Alarm priority:  Medium
  Notification:
    SMS to:   +44 7xxx xxx xxx (FM manager)
    Message:  "DEMAND WARNING: Building power [value] kW at [time].
               Contract limit: 100 kW. Reduce loads immediately."
  Clear condition: Value < 70 kW (10% hysteresis to prevent SMS flood)
  Acknowledgement: Not required (informational, auto-clears)

Maximum demand register (for utility tariff):
  Some utilities measure 30-minute maximum demand (kVA or kW)
  Configure BewO energy data point for 30-minute interval max:
    GA 6/9/0: log every 15 minutes → calculate 30-minute max
    Export: monthly CSV for utility bill verification

Reactive power alert (kVAr penalty avoidance):
  Add data point: GA 6/9/2 (total reactive power DPT 13.010 kVAr)
  Alert if cos-phi < 0.90 for > 30 minutes:
    → SMS: "Low power factor [value] — capacitor bank fault?"
    → Action: check whether power factor correction capacitors
      are operating (KNX binary output on PFC contactor feedback)

ISO 50001 baseline and EnPI in ARISTO BewO

Step 1 — Establish energy baseline (EnB):
  Period:      First 12 months of operation (Year 0)
  Data:        Total building kWh from GA 6/9/1 (utility meter kWh)
  Normalisation: Adjust for occupancy hours and HDD (if significant)
  BewO:        Export 12-month kWh CSV → calculate annual baseline
               Store baseline value in BewO documentation field

  Example baseline: 500,000 kWh (Year 0, 2024)

Step 2 — Define EnPI:
  EnPI formula: Actual energy / Baseline energy × 100%
  Target:       < 100% = improvement against baseline
  Stretch target: < 90% at Year 3 (10% reduction programme)

Step 3 — Annual EnPI calculation in BewO:
  Year 1 actual: 480,000 kWh
  EnPI Year 1:   480,000 / 500,000 × 100% = 96% (4% improvement)

  Year 2 actual: 462,000 kWh
  EnPI Year 2:   462,000 / 500,000 × 100% = 92.4% (7.6% improvement)

BewO reporting:
  Annual report: total kWh per zone, EnPI vs baseline, CO2 total
  PDF export → email to FM director (automated monthly summary)
  ISO 50001 auditor evidence: 3-year trend showing improvement

BewO automated monthly report configuration

BewO → Reports → Scheduled Reports → Add report:

Report name:      "Monthly Energy Report — [building name]"
Schedule:         1st day of each month, 08:00
Report period:    Previous calendar month

Content sections:
  1. Total building consumption (kWh) — bar chart monthly comparison
  2. Zone breakdown (HVAC, Lighting, Transport, DHW, Small power)
     — Pie chart % of total
  3. Peak demand record — maximum kW during the month + timestamp
  4. Power factor — average cos-phi for the month per phase
  5. CO2 equivalent — total kgCO2 for the month
  6. EnPI vs baseline — bar showing this month vs baseline monthly avg
  7. Alarms summary — number of demand warnings, meter fault alerts

Email settings:
  To:      fm@building.com; energy.manager@building.com
  CC:      sustainability@occupier.com (if applicable)
  Format:  PDF attachment + inline summary table

KNX tariff integration (optional):
  GA 6/9/3: current tariff rate DPT 9.001 (€/kWh, updated by occupier)
  BewO cost column: kWh × tariff rate = estimated cost per zone per month
  Note: tariff GA must be manually updated when utility rates change