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Hard Profitability Financial Analysis Payback Period Analysis

EV Charging Stations

#Energy/Transportation #Retail #Clean Energy #Energy

Practice this advanced profitability case interview question in the Energy/Transportation sector. Includes detailed problem prompt, clarifying questions, structured framework, and expert recommendation. Part of ProHub's 835+ consulting case library.

ProHub Comment

This case requires candidates to build a financial model calculating daily/annual gross profits and operating costs to determine payback period. The key is structuring the approach logically (daily profit per charger → annual profit per hotel → total investment divided by annual operating profit), clarifying missing data points proactively, and executing calculations accurately. Advanced candidates can contextualize the answer by discussing conservative utilization assumptions, economies of scale, and competitive necessity.

Estimated Time 35 minutes
Difficulty Hard
Source PeterK
10 / 100
A U.S. hotel chain would like to install fast charging stations to its 100 hotels to attract more customers. The availability of charging stations is one of the key considerations for travelers when choosing their hotels. What would the payback period be for this potential investment?

Clarifying Information

  1. Exhibit 1. Solution Provider Model
  2. Exhibit 2. Economics of Fast Charging Units, 2023
  3. The client plans to install one fast charging unit per hotel
  4. Projected price is $0.45/kWh
  5. Assume 360 days per year
  6. Assume no public subsidies and no additional revenue (e.g. ads)
Mock Interview
Interviewer

A U.S. hotel chain would like to install fast charging stations to its 100 hotels to attract more customers. The availability of charging stations is one of the key considerations for travelers when choosing their hotels. What would the payback period be for this potential investment?

You

Thanks. Before analyzing, I'd like to clarify a few key questions...

Interviewer

Good question. Let me provide some background information...

You

Based on this, I suggest analyzing from these dimensions...

AI Score
Structure Analysis Communication Business Sense Quantitative
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Practice this case with AI Mock Interview

Calculate the payback period for installing one fast charging unit per hotel across 100 hotels. The analysis shows 4-year payback based on daily gross profit of $108 per charger, annual gross profit of $155k per hotel, annual fixed costs of $115k, and total investment of $160k per unit.

Key Insights:

  1. Payback period formula: Total Investment / Annual Operating Profit = ($100k + $60k) / $40k = 4 years
  2. Daily gross profit calculation correctly isolates margin (revenue price minus electricity cost) multiplied by utilization rate and hours
  3. Conservative 15% utilization rate suggests actual payback could be faster if adoption rates exceed projections
  4. Economies of scale at 100 hotels could further improve payback through volume discounts on equipment and installation
  5. Strategic imperative: charging stations may transition from competitive differentiator to industry standard necessity