Calculation
| Freed large-press hours that orders fill | 300 hours x $55 x 70 percent filled = $11,600 |
| Electricity saved per year, in kWh | 300 hours x 10 kW = 3,000 |
| What that electricity costs | 3,000 kWh x 10 cents per kWh = $300 |
| Minus the scheduler's weekly check | 1.5 hours per week x 50 weeks x $40 per hour = $3,000 |
| What fixing it could save per year | $11,600 + $300 - $3,000 = $8,900 |
Assumptions
| Value | ||
|---|---|---|
| Large-press hours freed per year | 300 hours | |
| Extra power a large press draws on the same job | 10 kW | |
| Scheduler's hours per week to check the large presses | 1.5 hours | |
| Cost of one scheduler hour | $40 per hour | |
| Minutes to record one mold's smallest press | 10 minutes | |
| Small molds that run in a large press every month | 2 | |
| Value of one more running press hour | $55 per hour | |
| Share of freed press hours that orders fill | 70 percent | |
| Cost of one process technician hour | $52 per hour | |
| Price of electricity | 10 cents per kWh |
Large-press hours freed per year
300 hours
Extra power a large press draws on the same job
10 kW
Scheduler's hours per week to check the large presses
1.5 hours
Cost of one scheduler hour
$40 per hour
Minutes to record one mold's smallest press
10 minutes
Small molds that run in a large press every month
2
Value of one more running press hour
$55 per hour
Share of freed press hours that orders fill
70 percent
Cost of one process technician hour
$52 per hour
Price of electricity
10 cents per kWh