2. * To choose right wattage of LED Lamp to replace conventional lamps in the project. * To know price information of other lamp cost, electricity cost, maintenance frequency and cost, and cable cost. * To compare lamp life, electricity cost, maintenance cost, cable cost and total investment.

6. Hypothesis: electricity $1/kwh, 1000pcs lamp, working 10h/day, 5 years

8. 5 YEAR FREE MAINTENANCE

10. And the main cables can be much thinner for LED! Save $4200!

11. Cost includes lamp price, cable cost, electricity cost, maintenance cost. Compare to HPS/MH, save $644,200!

14. Compare LED to HPS/MH, 1000pcs, 5 years Total Saving: 146,000KWH Electricity 52.6 Ton Standard Coal 140 Ton CO 2 Emission 644,200USD

15. SAVE ENERGY ， SAVE EARTH! SAVE ENERGY ， SAVE EARTH!