Solar Savings Analysis — Mansfield, Texas

Electricity Market Structure in Mansfield

Mansfield is served by Oncor Electric Delivery and participates in the ERCOT deregulated retail electricity market. Located at the intersection of Tarrant, Johnson, and Ellis counties in the southern DFW suburban arc, Mansfield has grown substantially as a residential community serving the south Fort Worth and Arlington employment corridors.

Mansfield is positioned within the ERCOT North Load Zone, at the southern boundary of the North Texas metro distribution network. The city's location at the outer edge of the DFW core places it in a distribution sub-network that connects the urban core with less densely served rural corridors to the south. Oncor's transmission infrastructure in this corridor supports a mix of suburban residential and rural commercial load.

For additional context on Oncor Electric Delivery's role as the transmission and distribution operator in this market, see the Oncor Electric Delivery utility authority node.

Solar Irradiation Context — Mansfield

Mansfield, Texas receives an estimated annual average solar irradiation in the range of 4.9 to 5.2 kWh per square meter per day, based on NREL National Solar Radiation Database reference data for the North Texas geographic zone. This translates to approximately 5.0 peak sun hours per day on an annualized basis, representing a moderately high solar resource consistent with the broader Texas solar production environment.

City-level irradiation data is applied in SunScore™ modeling as a primary energy yield input. No ZIP code-level or address-level irradiation claims are made on this page. Actual solar output at any specific property will vary based on roof pitch, azimuth, shading obstructions, and system configuration.

Utility Territory & Delivery Structure — Mansfield

Oncor Electric Delivery serves Mansfield as the regulated transmission and distribution operator under PUCT oversight. Oncor does not set retail electricity prices in the deregulated Texas market. Retail rates are established by competing retail electricity providers (REPs). The delivery charge component of a retail electricity bill — covering Oncor's transmission and distribution infrastructure — is regulated separately from the energy supply charge. SunScore™ projection modeling addresses the energy supply component of the retail bill, not the regulated delivery charge. Methodology detail is available at SunScore™ Projection Methodology.

Retail Electricity Baseline — Mansfield (EIA 2024 Reference Year)

Residential rate modeling for Mansfield uses EIA Form 861 data for the 2024 reference year within the Oncor delivery territory. Mansfield's multi-county footprint spans three counties, but all portions fall within the deregulated ERCOT market and Oncor delivery infrastructure, producing consistent rate market dynamics across the city.

All rate references on this page derive from publicly available EIA Form 861 data for the 2024 reference year and represent historical average figures. They are not real-time rates, guaranteed future rates, or provider-specific quotes. Actual retail electricity prices in Mansfield vary by retail electricity provider, contract type, and enrollment date. Consumers seeking current rate information may consult the Power to Choose portal maintained by the Public Utility Commission of Texas.

Avoided Cost & Export Compensation Context — Mansfield

Avoided cost for Mansfield is modeled using the ERCOT North Hub wholesale-proxy baseline. The self-consumption economic advantage in Mansfield's solar scenarios is consistent with other Oncor-territory cities: retail rates substantially exceed wholesale-proxy export values, making solar self-consumption the primary economic driver in SunScore™ modeled scenarios for this market.

In the ERCOT market structure, solar energy consumed on-site avoids the retail rate, while energy exported to the grid is compensated at or near wholesale-proxy levels — a materially lower value. SunScore™ projections distinguish between self-consumption and export scenarios in the modeled output. A detailed explanation of the avoided cost framework is available at Avoided Cost Explained.

Federal Incentive Layer — Mansfield (ITC 30% Reference)

The federal Investment Tax Credit (ITC), currently structured at 30% of eligible system cost under the Inflation Reduction Act as of the 2024 reference year, is available to qualifying homeowners in Mansfield who install eligible solar photovoltaic systems. This credit is non-refundable — it reduces federal income tax liability but does not generate a direct cash payment if the credit exceeds tax liability in the installation year. Unused credit amounts may carry forward to subsequent tax years subject to applicable IRS rules.

The federal ITC is incorporated as an incentive layer input in SunScore™ projected payback and return scenarios. GetSunScore does not provide tax advice. Homeowners should consult a qualified tax professional to assess personal eligibility and application. A detailed explanation is available at Federal Solar Tax Credit Explained.

Modeled Projection Context — Mansfield

Mansfield's geographic position at the junction of three counties reflects a city that has expanded outward from the Tarrant County core into more rural-transitional land in Johnson and Ellis counties. Newer developments in Mansfield's outer growth zones tend to feature larger lot sizes and newer construction than the established neighborhoods near the city center, creating a gradation in solar siting conditions across the city's footprint. The city's relative distance from the DFW core also means electricity transmission path lengths are slightly greater than for inner-ring suburbs, a distribution infrastructure variable that Oncor manages within its regulated rate structure. SunScore™ projections for Mansfield apply city-level NREL irradiation data calibrated to the South Tarrant County geographic subregion.

SunScore™ projections for Mansfield are generated by synthesizing NREL irradiation data for the Mansfield geographic zone, EIA Form 861 rate baselines for the 2024 reference year, publicly available residential system performance assumptions, and applicable federal and state incentive layer inputs. The output is a modeled estimated savings range expressed as an annual and cumulative scenario over a defined projection horizon.

All SunScore™ projections are non-binding modeled scenarios. They do not constitute financial advice, a solar installation quote, or a guaranteed savings figure. Full methodology documentation is available at SunScore™ Projection Methodology, GetSunScore Data Sources, and Modeling Assumptions.

Solar Installation Pathway in Mansfield

Homeowners in Mansfield who have reviewed GetSunScore's modeled solar savings projection and wish to proceed with installation evaluation may do so through the standard residential solar qualification and contractor evaluation process.

GetSunScore does not install solar systems, endorse specific solar contractors, or recommend providers. Qualified homeowners seeking installation evaluation may consult the installer directory referenced in GetSunScore's partner network documentation.