It sounds like you’re referring to a course code – possibly in industrial engineering, energy systems, operations research, or a related technical field (e.g., at institutions like the University of Tennessee, Knoxville, which uses IENE prefixes for engineering management).
$78,000 + $36,000 = $114,000. 3.2 Time value of money Using present worth (PW) method: iene-315
With storage: Battery charges during low-cost hours (solar or cheap grid), discharges during peak. Peak shaving saves 200 kW × $15/kW × 12 months = $36,000/year. It sounds like you’re referring to a course