Treat the Round Rock result as a local filter rather than a blanket statement about every household. The relevant market is the one attached to the meter. In this Central Texas mixed-utility market, the safest process is to verify the utility first and then compare only offers returned for the exact address. If the utility differs from the expected pattern, stop using the city-level assumptions and move back to the Texas overview until the service model is clear.
Fast suburban growth means neighboring developments can have different electric-service arrangements. Confirming the ESI ID or utility before ranking plans prevents a comparison from starting with the wrong market. This is why previous kWh is more useful than a previous dollar bill. The old bill combines consumption with a contract that may no longer exist. Monthly kWh can be reused across new disclosures. Preserve the high-usage months instead of smoothing them into one average, because delivery charges, base fees and credits can make those months disproportionately important to annual cost.
The local electricity framework centers on Oncor, PEC or another address-specific utility, subject to verification at the exact service point. That verification should happen before provider ranking, not after. If the address uses another utility or a noncompetitive service model, route the user to the Texas overview and explain the difference. The city page should never manufacture retail choice simply because a neighboring development has it.
Nearby pages can help with geographic context, but they are not substitutes for the Round Rock address. Compare Austin, Killeen and Waco only when the user is evaluating a move or trying to understand adjacent service territories. For the current residence, keep one rule: exact address first. If the place name entered in the state explorer has no dedicated city page, the correct destination is the general Texas electricity page, where utility and market type can be established without creating a thin local page.