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Retry questionEV Grid Load
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Math
The client currently serves 10 million residential customers. Internal forecasts suggest that 15% of households will have an EV by 2029. Each EV charges an average of 4,000 kWh per year. The client’s total residential grid capacity is 60,000 GWh per year.
Note: 1 GWh = 1,000,000 kWh.
Assuming no other demand increases, how much of the grid’s capacity would be taken up by EVs in 2029?
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Sample answer from an expert consultant
Step 1: Number of EV households
10M households × 15% = 1.5M households with EVs
Step 2: Total EV electricity usage
1.5M EVs × 4,000 kWh = 6,000,000,000 kWh = 6,000 GWh
Step 3: Share of residential grid capacity
6,000 GWh / 60,000 GWh = 10%
Answer:
By 2029, EV charging will account for 10% of the utility’s residential grid capacity, assuming no other demand increases.
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