Warehouse on average commands one of the highest potential in energy savings among buildings with occupancy based lighting controls. Research and surveys commissioned by CEC and US EPA predicted 50% to 75% of savings in lighting energy use with occupancy sensors.
Taking a conservative estimate of 50%, a warehouse with LED lamps installed as illustrated below brings about 292 MWh or $49,640 of savings a year.
| Size of Warehouse |
: 40,000 sqm |
| Number of High Bay Lamps |
: 500 |
| Energy Consumed per Lamp |
: 200 W |
| Average Operating Hour of Full Lighting |
: 16 Hour / Day |
| Energy Consumed per Year |
: 500 Lamps x 200 W x 16 h x 365 Days |
| |
: 584 MWh |
| Energy Savings per Year |
: 292 MWh |
Cost Savings per Year
(based on electricity rate of $0.17 / kWh) |
: $49,640 |