Path-Q Solar
Is solar less valuable if my home is empty during most daylight hours?
Answer
It can be less valuable when little electricity is used while the panels are producing, but the effect depends on how exported energy is credited, whether loads can be shifted, and whether a battery is appropriate. Daytime absence does not make solar unsuitable; it changes the value calculation.
Key points
- Solar generation used directly on site usually avoids buying electricity at the applicable retail rate.
- Unused generation may be exported, stored, or curtailed, and its value depends on the applicable arrangement.
- EV charging, water heating, laundry, cooling, or other flexible loads may increase daytime use.
- A battery can shift some solar energy to later use but adds cost, losses, maintenance, and equipment considerations.
What it depends on
- Daytime versus evening electricity use
- Export-credit or compensation rules
- Ability to shift loads
- Battery cost, purpose, and operating constraints
Risks and trade-offs
- Assuming every kilowatt-hour has the same value can overstate savings.
- A battery may improve timing but may not be the lowest-cost option.
- Future rate or credit changes can affect the economics.
Information you may need
- Hourly or interval consumption pattern
- Utility export and billing terms
- Flexible loads and occupancy schedule
- Whether backup power is also desired
Your next step
What to do next
Request savings scenarios for direct use only, load shifting, and a battery, using the applicable current billing and export terms.
Path-Q
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Some details may depend on your location, installer, utility, incentives, regulations, or specific property.
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