Is retro the way to go for your lighting systems? Troffers or hi bay lighting can often be retrofitted for a fraction of the cost of replacement and still meet the requirements for incentive programs.
| Current System | Retro Option 1 | Retro Option 2 | |
|---|---|---|---|
| System | 4 Bulb T12 Troffer | Retro kit (reflector style) | Ballast/bulb changeout - CEE rated |
| Material | (4) 34W bulbs, (2) Magnetic Ballasts | (2) 32W T8XP lamps & HBF Ballast | (4) 28W T8 lamps & LBF Ballast |
| Hours of Operation | 3000 | 3000 | 3000 |
| Fixture Cost | Existing | $ 39.00 | $ 29.00 |
| DP&L Rebate | Existing | - 12.00 | - 20.00 |
| Net Material Cost | $ 27.00 | $ 9.00 | |
| System Wattage | 144 | 74 | 84 |
| Watts Saved | 0 | 70 | 60 |
| Foot Candle Levels | Existing | 10-20% more | Slightly more |
| Energy Rate | $0.10 / KWHr | $0.10 / KWHr | $0.10 / KWHr |
| Energy Savings per Year | $0 | 3000 x 0.10 x 70 / 1000 = $21.00/yr | 3000 x 0.10 x 60 / 1000 = $18.00/yr |
| Material Payback | $27.00 / $21.00 = 1.3 years (16 months) | $9.00 / $18.00 = 0.5 years (6 months) | |
| Return on Investment | $21.00 / $27.00 = 78% ROI | $18.00 / $9.00 = 200% ROI |