A business wants to reduce its energy use. One option is to replace ten existing 50...
- A business wants to reduce its energy use. One option is to
replace ten existing 50 watt fluorescent lights with ten new, 8
watt LED lights that provide the same amount and quality of
lighting. The lights are used 12 hours per day, 250 days per year.
The cost of electricity is $0.2/kWh. Each LED light costs $1 Assume
the new lights last 10 years and that the time frame of the
analysis is 10 years. Assume that the electricity system has power
plants with an average heat rate of 8000 Btu/kWh.
- How much total primary energy is saved by the ten new lights, in MJ, over the entire time frame of the analysis?
- What is the net present value of the investment, assuming a 5% discount rate?
- What is the simple (zero discount rate) payback time for the investment?
- What is the present cost per saved MJ?
Homework Answers
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A business wants to reduce its energy use. One option is to
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can someone assit me with how to get this problem started in
excel?? i would like to figure it out myself. teacher videos are
not helping me.
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