Case Study
Improvement in Dissolved Oxygen and Efficiency in Power Consumption
PT. Kawasan Industri Medan
Improved Dissolved Oxygen to 3 ppm ~ 5 ppm of communal wastewater facilities in 2 weeks with reduced power consumption by 50%. The implementation of Bluewave PowerSave further drives efficiency by 23%.
Chemical consumption drops by half. Overhead drops to less than 30%. Annual saving of SGD $ 65.000,- turns utility department of the state-owned company into a highly efficient and productive exemplary showcase in Indonesia industrial estates.
Objective
What This Study Aims to Achieve
1
Assess Pre-Automation Energy Consumption
Evaluate energy usage patterns before implementing automation dynamic configuration.
2
Compare Post-Automation Efficiency
Analyze the improvements in energy efficiency after automation dynamic configuration.
Methodology
How the Data Was Collected
Before Dynamic Configuration
- Data collected from Jan 11, 2025 to Jan 16, 2025
- Included data from PM & DO meters
After Dynamic Configuration
- Data collected from Jan 18, 2025 to Feb 23, 2025
- Included data from PM & DO meters
Analysis Methodology
- Measurement of Power & DO
- Benchmarking energy consumption
- Statistical comparison between data before and after dynamic configuration
After Dynamic Configuration
- Data collected from Jan 18, 2025 to Feb 23, 2025
- Included data from PM & DO meters
The graph shows daily average DO trends over two weeks:
Solid lines represent data from Week 1, while dashed lines indicate Week 2.
This visualization helps compare dissolved oxygen variations over time for water quality analysis
Result: Equivalent DO Readings
The graph shows daily power consumption trends before and after automation:
Before Automation (Jan 11–16, 2025):
Steady consumption, peaking on Jan 14 (~165 kW).
After Automation (Jan 18–23, 2025):
Significant reduction, lowest on Jan 21 (~120 kW).
Insight: Automation improved energy efficiency while maintaining same DO performance
Energy Consumption After Automation
Result of Automation
Daily Total Power Consumption Comparison by Active Units
- Week 1 (Jan 11, 2024 - Jan 16, 2025): 22,540.56 KWh (Before Energy Saving)
= 22,540.56 x 0,13 SGD/KWh
= 2.928,56 SGD in 5 days running - Week 2 (Jan 18, 2024 - Jan 23, 2025): 17,272.95 KWh
= 17,272.95 x 0,13 SGD/KWh
= 2.244,17 SGD in 5 days running
Energy Efficiency 5 days running:
- Efficiency Energy Saved = (Before - After) = 5,267.61 kWh
- Efficiency Energy (%) = (Efficiency Saved / Week 1) x 100 = 23.37%
- Saving = 684,39 SGD in 5 days
Summary
Key insight from the impact of dynamic configuration in automation,
Daily Total Power Consumption Comparison by:
Active Units
Week 1 (Before automation):22,540.56 kWh
Week 2 (After automation):17,272.95 kWh
Energy Efficiency
Efficiency Energy Saved:5,267.61 kWh
Efficiency Percentage:23.37%
Equivalent Monetary Savings
684,39 SGD savings in 5 days running (Before vs After)
Energy Savings Automation
while maintaining equivalent performance
performance
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