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OR Surgical Light Utilization Estimate.<br />
$/kWh = 0.09<br />
6/19/2009<br />
Data Provided by: Todd Belforte (415-833-9723) todd.a.belforte@kp.org<br />
Total LED<br />
Lighting Watts<br />
per room<br />
Total<br />
Halogen<br />
Watts/Room<br />
Watts for<br />
light #3<br />
Watts for<br />
light #2<br />
Watts for<br />
light #1<br />
OR # Number of<br />
luminaires per<br />
lighting system (2<br />
or 3 )<br />
1 2 220 220 0 440 288<br />
2 2 235 235 0 470 288<br />
3 2 235 235 0 470 288<br />
4 2 235 235 0 470 288<br />
All 1,850 1,152<br />
*Please note: one week of use subtracted for the number of Holidays the rooms aren't utilized.<br />
OR # Hours of Hours per Total kWh Halogen Halogen $/yr<br />
operation M-F day hours per /week kWh/yr*<br />
week<br />
1 7.5 68 30 1,526 $137<br />
2 7.5 68 32 1,630 $147<br />
3 7.5 68 32 1,630 $147<br />
4 7.5 68 32 1,630 $147<br />
All 30 126 6,416 $577<br />
OR # LED kWh /week LED LED $/yr Δ $/yr<br />
kWh/yr*<br />
1 20 999 $90 $47<br />
2 20 999 $90 $57<br />
3 20 999 $90 $57<br />
4 20 999 $90 $57<br />
All 78 3,995 $360 $218<br />
Copy of 2 Petaulma OR Loads Project No. 09104<br />
Page 40
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