Path-Q Solar
Would access to workplace charging reduce how much solar capacity I need for charging my EV at home?
Answer
Yes. Workplace charging can reduce the energy the home system needs to supply, but the reduction depends on how often it is available, how much energy it provides, and whether that access is reliable over time.
Key points
- Estimate the EV's annual energy use and subtract realistic workplace, public, or other non-home charging.
- Do not count occasional or uncertain workplace access as a guaranteed long-term supply.
- Home solar sizing should also consider the household's non-EV loads and any future change in charging location.
What it depends on
- Annual EV mileage and efficiency
- Frequency, duration, and reliability of workplace charging
- Home-charging share and schedule
- Solar production and billing structure
Risks and trade-offs
- A job change, charger outage, access restriction, or fee change can shift charging back home.
- Reducing solar capacity may lower upfront cost but leave less flexibility for future home charging.
Information you may need
- Expected annual driving
- Workplace charger availability and typical energy delivered
- Current home-charging records
- Future employment and vehicle plans
Your next step
What to do next
Model solar size using conservative, expected, and no-workplace-charging scenarios, then choose how much future charging flexibility is worth retaining.
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