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Retry questionEV 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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