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EV Grid Load

Case Interview Practice > 
Exhibit Analysis

The client ran a behavioral study on EV owners across three states. What trends or risks do you observe based on the data?

Case Exhibit

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Sample answer from an expert consultant

From the data, several insights emerge:

1. High Home Charging Dependence

  • 80–90% of EV owners charge at home → indicates strong reliance on the residential grid vs public stations

2. Peak-Hour Risk

  • 65–75% of users charge between 5–9PM — aligned with peak household usage (cooking, heating, lighting)
    → This creates compounding demand stress during evening hours

3. Duration of Charging

  • Avg. daily charging time is 2–2.5 hours
    → Not an extreme burden, but clustered timing is the issue more than volume

Implication:
The timing, not the amount, is the biggest challenge. Load shifting—not just capacity expansion—is a critical part of the solution.

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