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Copyright © Nelson <strong>Stud</strong> <strong>Welding</strong>, Inc.<br />
Energy savings estimate<br />
Assumptions (BIW data)<br />
$0.0765 per kWh<br />
284,148 pins and 339,206 electrical (623K total)<br />
40 PowCons, 9 Nelson inverters, 45 “energy guzzlers”<br />
Annual Energy Savings per drawn arc welder<br />
100% Idle: 8766 hours x 1.145 kW x $0.0765 = $768<br />
100% <strong>Welding</strong>: 8766 hours x 2.25 kW x $0.0765 = $1509<br />
Assume 10% duty cycle: $842 per welder<br />
Annual Energy Savings per stud<br />
$842 / 6558 studs per welder = $0.128 per stud<br />
Potential annual savings examples<br />
BIW $842 x 45 welders = $37,899 based on welder<br />
<strong>NSRP</strong> group $842 x 700 welders = $589,400 based on welder<br />
$0.128 x 5 million studs = $640,000 based on studs<br />
May 8, 2012<br />
<strong>NSRP</strong> <strong>Welding</strong> Panel Meeting Fort Collins 2012<br />
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