GetSunScore Analysis: Utility Rate Structure
Definition and Solar Context
Utility rate structure refers to the pricing framework a utility or retail electric provider uses to charge customers for electricity consumption. Rate structures define how much a customer pays per kilowatt-hour (kWh) consumed, and may include fixed charges, tiered pricing, and other billing components.
GetSunScore uses the committed EIA Texas residential average price as a baseline for screening estimates. It does not reproduce each utility or REP rate structure.
What Does Rate Structure Mean?
A utility rate structure is the framework by which a regulated utility, cooperative, or retail electric provider prices electricity delivered to customers. Rate structures typically comprise a fixed customer charge and an energy charge (expressed in cents or dollars per kWh).
Tiered rate structures apply increasing per-kWh prices as consumption rises. Time-of-use rates charge different prices depending on when electricity is consumed. The rate structure applicable to a given customer depends on their utility territory and selected tariff.
Why Rate Structure Matters in Modeling
A household's actual rate structure determines which purchases solar can offset. The current calculator estimates annual savings using a statewide rate baseline, modeled self-consumption, and scenario-based export value.
Because the model does not load the household's plan, fixed charges, time-of-use prices, and non-bypassable delivery charges can make actual bill savings differ from the estimate. See the methodology for the current source period and assumptions.
How Rate Structure Applies in Texas
In deregulated Texas service areas, residential customers may choose among retail electric providers (REPs) with different rate structures. A transmission and distribution utility delivers the power; it is not the REP plan.
Municipal utilities, cooperatives, and other service areas can have different arrangements. GetSunScore gives location context but does not apply a territory-specific tariff or REP rate; verify the actual service and contract at the address.
Frequently Asked Questions
A utility rate structure is the pricing framework a utility or retail electric provider uses to charge customers for electricity. It typically includes a fixed monthly charge and an energy charge per kWh consumed, along with potential demand or time-of-use components.
GetSunScore uses a committed EIA Texas residential average electricity price as its screening baseline. It does not apply a customer's exact tariff, REP plan, fixed charges, or time-of-use schedule. Those terms can change actual savings.
Many Texans in deregulated areas can choose a retail electric provider. Municipal utilities and cooperatives set their own terms, and service arrangements vary by address. Check the serving utility and current plan before applying a statewide estimate to a household.
A time-of-use (TOU) rate structure charges different prices for electricity depending on the time of day. Peak hours typically have higher rates; off-peak hours have lower rates. TOU structures can affect the value of solar generation.
Plan and tariff terms can change. GetSunScore's statewide EIA rate snapshot is refreshed through a monthly validation workflow when new EIA data is available; it is not a quarterly review of 2024 utility filings. The source period and retrieval date appear in the methodology.
The calculator uses a versioned EIA Texas residential average rate, not 2024 utility filings. Current source metadata is available on the data-sources page; results remain non-binding scenarios.