Path-Q Solar
What happens if my solar system produces more electricity than my property uses?
Answer
Surplus electricity may be exported to the grid, stored in a battery, curtailed, or credited under the applicable utility arrangement. The financial value of surplus can be materially lower than the value of electricity used directly on the property, so system sizing and export terms matter.
Key points
- On-site use generally avoids purchased electricity, while exported power is valued according to the applicable credit or compensation rule.
- A battery can shift some surplus to later use but has capacity, efficiency, cost, and warranty limits.
- Some systems may limit production or exports when the grid or interconnection arrangement requires it.
- Review whether credits carry forward, expire, transfer, or offset fixed charges.
What it depends on
- Utility tariff and export-credit rules
- Hourly property load and solar production
- Battery capacity and operating settings
- System size and interconnection limits
Risks and trade-offs
- Oversizing can increase low-value exports and weaken project economics.
- A smaller system may improve self-consumption but leave future loads uncovered.
- Export rules can change or differ from the treatment assumed in a sales proposal.
Information you may need
- Utility tariff and written export terms
- Hourly load and production estimates
- Battery proposal if applicable
- System-size alternatives and curtailment assumptions
Your next step
What to do next
Ask for a month-by-month analysis separating on-site use, battery charging, exports, credits, and any unused production.
Path-Q
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Some details may depend on your location, installer, utility, incentives, regulations, or specific property.
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