KUA Solar 90% Service-Rating Rule: Verify the Capacity Basis

Ask for two identified ratings, not a panel-count estimate

Confirm that KUA serves the property, then ask the project professional to identify the proposed generation rating and the utility service-rating basis used for comparison. Record the units, source, date and design revision for each. The goal is a traceable utility review, not a homeowner calculation assembled from unrelated equipment labels.

A household electrical panel rating, a solar inverter label and a utility distribution-service rating describe different things. Do not substitute one for another because the numbers look compatible. Share accessible equipment records with the qualified team, but do not open cabinets, remove seals or handle utility equipment to obtain a label. If the required service basis is unknown, keep it marked unknown until the responsible party supplies it.

Use a worked comparison only after the inputs are confirmed

A simple comparison sheet can show the confirmed service basis, the applicable fraction, the resulting threshold and the proposed system rating. Put the calculation beside the drawing version being reviewed. Keep units consistent and avoid rounding a borderline result into apparent compliance. Ask the designer to explain the proposal’s generation-rating method rather than deriving it from the desired bill offset.

Hypothetical arithmetic only: if a utility-confirmed comparison basis were 20 kW, 90% would be 18 kW. A proposed 17 kW rating would be below that numeric threshold; 19 kW would be above it. Those invented inputs do not establish any home’s actual service capacity or approval. Even a below-threshold comparison does not replace the other design, permitting or interconnection checks for the property.

Separate a utility finding from a contractor allowance

If the review identifies work, request the written finding and ask which organization owns each part. A distribution-facility change and a customer-side electrical alteration should not be collapsed into one unexplained upgrade allowance. List the scope, responsible party, prerequisite, quoted or pending amount and payment responsibility separately.

Keep an unresolved amount labeled pending, not zero. Ask what would trigger a revised scope or schedule and whether another project step depends on that work. Origin can discuss a supported installation scope for the property, but it cannot promise what KUA will approve or what utility work will cost before the relevant determination. A verbal statement that similar jobs usually work out is not the same evidence as an address-specific response.

Compare alternatives without hiding their differences

If the designer offers a revised system, ask for the new equipment schedule and production estimate alongside the original option. Use the same household usage record and clearly label any changed assumptions. A smaller array, different inverter arrangement or changed project sequence should not be presented as equivalent merely because the headline monthly payment is similar.

Include equipment retained or replaced, roof and electrical work, relevant approvals and unresolved dependencies in the comparison. Keep capacity compliance separate from the homeowner’s financial decision. Do not force a savings percentage or payback target by altering the usage baseline, omitting continuing charges or assuming unverified incentives. A well-documented choice can be to revise the project, complete another prerequisite first or defer the addition.

Preserve the determination through design changes

Keep the utility response with the design revision it evaluated. If equipment, capacity or service arrangements change later, ask the responsible team whether the prior finding remains applicable. Note who checked, when they checked and which drawing now controls. A response about an earlier configuration should not silently become evidence for a different one.

At handoff, retain the final equipment schedule, relevant approval records and any completed upgrade documentation. This gives a future service provider a starting point if the system is expanded or a question arises during a property transfer. Keep passwords and sensitive account records private. A callback can begin with the type of capacity question and the address area; Origin will confirm availability and what records are appropriate for the next review.

Primary sources

1. KUA: Application and Interconnection Agreement

   Checked October 19, 2026. The application currently linked from KUA’s Net Metering page contains the 90% distribution-service provision in agreement section 4; the PDF’s own revision remains unchanged.

Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.

Related guidance

• Check KUA gross-power-rating inputs
• Review notices before changing an existing system
• Compare complete project scope
• Confirm Orlando-area project availability