Gas Cost Analysis
Generac 15kW Air Cooled Standby Generator
Note: Unit produces a maximum rated 13kW using natural gas.
From current electic bill average monthly usage is 1450 kWh
kWh days per month hours/day hours kW (typical)
1450 30.5 24 732 1.980874
Gas Cost:  $    0.80 Therm
Note: 1 Therm of gas is 100,000 BTUs or 100 cubic feet per hour (CFH)
No Load Typ Load 1/2 Load Full Load
0 2 6.5 13 kW y=mx+b
57.0 85.2 148.5 240.0 CFH m 14.07692
0.570 0.852 1.485 2.400 Therm b 57
 $    0.46  $    0.68  $          1.19  $       1.92 per hour
 $   10.94  $   16.35  $        28.51  $     46.08 per day
   
 $ 328.32  $ 490.49  $      855.36  $ 1,382.40 per 30 days
 $ 339.26  $ 506.84  $      883.87  $ 1,428.48 per 31 days
   
 $ 333.79  $ 498.66  $      869.62  $ 1,405.44 average per month