Path-Q Solar

When is waiting for a utility interconnection review the better choice than redesigning the system immediately?

Answer

Waiting is usually better when the proposed design has already been submitted, the utility has not yet identified a technical constraint, and redesigning now could remove useful capacity without evidence that a change is needed. Redesign sooner when the application is incomplete, clearly exceeds known limits, or the review timeline would materially delay the project.

Key points

  • Ask what issue, if any, triggered the review and whether the utility has requested a specific change.
  • Confirm whether the review concerns export limits, service capacity, protection, metering, or another constraint.
  • Keep the installer from making an unsupported redesign solely to anticipate an unknown outcome.
  • If redesign is necessary, request alternatives and their effects on capacity, cost, export, and schedule.

What it depends on

  • The utility's interconnection process and review status
  • The submitted system design and export assumptions
  • Service capacity and equipment configuration
  • The project's tolerance for delay and redesign cost

Risks and trade-offs

  • Waiting can preserve design options but may delay procurement or installation.
  • Redesigning prematurely can reduce production or add cost without solving the actual constraint.
  • A utility decision may require a design change, equipment upgrade, or operating limitation.

Information you may need

  • The submitted interconnection application
  • Written utility requests or review status
  • The installer’s technical alternatives
  • Project deadlines and the cost of delay

Your next step

What to do next

Obtain the utility's current written status and any identified constraint before authorizing a redesign; verify the applicable interconnection requirements with the utility.

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Some details may depend on your location, installer, utility, incentives, regulations, or specific property.

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