Path-Q Solar
What happens if my utility limits how much solar power I can export?
Answer
An export limit may require the system to control or curtail output when on-site demand is low. The design may use smaller solar capacity, export-control equipment, batteries, load shifting, or a different interconnection arrangement, and the economic result depends on how often energy would otherwise be curtailed.
Key points
- The limit may apply to instantaneous power, annual exports, or another utility-defined measure.
- Export control must respond reliably to changing site load and may require compatible inverters and monitoring.
- A battery can absorb some excess production, but it may fill before the solar day ends.
- System size should be evaluated using hourly production, load, and curtailment rather than annual generation alone.
What it depends on
- Utility export limit and interconnection requirements
- On-site load profile and operating schedule
- Battery capacity and control strategy
- Solar system size and inverter capabilities
Risks and trade-offs
- Curtailment can reduce production and savings from an otherwise larger array.
- Export-control equipment adds cost and may introduce operational dependencies.
- A design that relies on a battery may provide less benefit during extended outages or low-load periods.
Information you may need
- Written utility interconnection and export-limit requirements
- Interval load data and proposed production profile
- Inverter and export-control specifications
- Battery and load-management options
Your next step
What to do next
Confirm the utility's exact export constraint and ask for designs with no battery, controlled export, and storage, showing estimated curtailment.
Path-Q
Find the right next step
Answer a few questions and we’ll narrow your options.
Loading…
Some details may depend on your location, installer, utility, incentives, regulations, or specific property.
SQ00586