Table 3 Smart building technologies applied for energy savings—EDGE App output
From: Towards energy efficiency: retrofitting existing office buildings using smart technologies
Energy saving | Final energy use | Final utility cost | Energy savings | Utility cost savings | Incremental cost | Payback in years | ||
|---|---|---|---|---|---|---|---|---|
% | kWh/month | USD/month | MWh/year | USD/year | USD | years | ||
Existing case | 11.74 | 45,338 | 6631.5 | 65.29 | 14,690 | 125,623 | 8.6 | |
Scenarios | The assessment output of each scenario when applied to the existing case | |||||||
1 | Lighting controls | 12.17 | 44,514 | 6562.8 | 67.27 | 14,855 | 131,876 | 8.9 |
2 | Onsite renewable energy 10% of annual energy | 20.56 | 40,805 | 5923.8 | 119.69 | 23,182 | 155,384 | 6.7 |
3 | Variable speed drives | 16.95 | 42,536 | 6397.7 | 98.92 | 17,496 | 125,452 | 7.20 |
4 | Onsite renewable energy 10% of annual energy | 20.96 | 40,063 | 5868.0 | 120.68 | 23,193 | 161,121.0 | 6.90 |
Lighting controls | ||||||||
5 | Variable speed drives | 21.58 | 39,650 | 5996.9 | 125.63 | 21,646 | 145,410 | 6.70 |
Lighting controls | ||||||||
Onsite renewable energy 5% of annual energy | ||||||||