Electricity Market Structure in Rowlett
Rowlett is served by Oncor Electric Delivery for transmission and distribution services and participates in the ERCOT deregulated retail electricity market. Located between Lake Ray Hubbard and Lake Ray Roberts in Dallas and Rockwall counties, Rowlett has grown significantly as a lakeside residential community northeast of Dallas.
Rowlett falls within the ERCOT North Load Zone. Its peninsular geography — bounded by Lake Ray Hubbard on three sides — creates a distribution service area with constrained land access points relative to contiguous suburban cities. Oncor's distribution infrastructure serving Rowlett accommodates a predominantly residential load profile, with minimal heavy commercial or industrial demand.
For additional context on Oncor Electric Delivery's role as the transmission and distribution operator in this market, see the Oncor Electric Delivery service territory analysis.
Solar Irradiation Context — Rowlett
Rowlett, 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 — Rowlett
Oncor Electric Delivery serves Rowlett 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 only.
Retail Electricity Baseline — Rowlett (EIA 2024 Reference Year)
Residential electricity rate modeling for Rowlett references EIA Form 861 data for the 2024 reference year within the Oncor delivery territory in Dallas County. The Rockwall County portion of Rowlett falls within the same deregulated ERCOT market framework. Retail electricity competition in the northeastern DFW corridor produces rate dynamics consistent with the broader North Texas deregulated market.
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 Rowlett 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 — Rowlett
Avoided cost for Rowlett is modeled using the ERCOT North Hub wholesale-proxy baseline, consistent with all other Oncor-territory North Texas cities. Solar energy self-consumed in Rowlett avoids the applicable residential retail rate, while grid export is valued at wholesale-proxy levels substantially below retail.
In the ERCOT market, 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. A detailed explanation of the avoided cost framework is available at Avoided Cost Explained.
Federal Incentive Layer — Rowlett (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 Rowlett 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 may carry forward to subsequent tax years subject to applicable IRS rules.
The federal ITC is incorporated as an incentive layer input in SunScore™ modeled scenarios. GetSunScore does not provide tax advice. Homeowners should consult a qualified tax professional to assess eligibility.
Rowlett homeowners in Dallas and Rockwall county portions are eligible for the Texas property tax exemption on qualifying solar installations and the federal Investment Tax Credit at 30%. Texas does not mandate retail net metering. Solar export compensation is governed by individual retail electricity provider contracts. DSIRE's 2024 reference year records document the applicable Texas incentive framework.
Modeled Projection Context — Rowlett
Rowlett's peninsular position between Lake Ray Hubbard and other water bodies creates a residential environment with a higher proportion of lakefront and lake-view properties than most other DFW suburban cities. This geography also introduces localized atmospheric conditions — including elevated relative humidity from proximate open water and occasional lake-influenced cloud formation — that represent property-level variables beyond city-scale NREL irradiation modeling.
SunScore™ projections for Rowlett use NREL data calibrated to the northeastern Dallas County subregion and note the lake proximity effect as a contextual caveat in the platform's assumptions documentation. Rowlett's housing stock reflects a mix of mid-20th-century lakeside properties and newer planned subdivision development, producing varied solar siting conditions across the city's geography.
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 Methodology, Data Sources, and Assumptions.
Solar Installation Pathway in Rowlett
Homeowners in Rowlett 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.
Homeowners evaluating solar installation in Rowlett typically proceed through structured qualification and installer evaluation stages, beginning with a property assessment to confirm roof suitability, structural capacity, shading conditions, and utility interconnection eligibility under Oncor Electric Delivery's interconnection standards.
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.
Regional Context & Related Analysis
Major Markets
Neighboring Zones
Technical Node
Frequently Asked Questions — Rowlett Solar Savings
Qualifying Rowlett homeowners who install eligible solar photovoltaic systems may be eligible for the federal ITC at 30% of eligible system costs under the Inflation Reduction Act. The credit is non-refundable against federal income tax liability, with carryforward provisions for unused amounts. GetSunScore does not provide tax advice; a qualified tax professional should confirm eligibility.
Texas provides a property tax exemption for the assessed value added by a qualifying solar installation, per DSIRE's 2024 reference year incentive records. Rowlett homeowners in Dallas and Rockwall county portions may qualify under their respective county appraisal frameworks. Texas levies no personal income tax solar credit. Retail provider incentives, if any, should be confirmed directly with the applicable provider.
SunScore™ projections for Rowlett reference EIA Form 861 residential rate data for the 2024 reference year for the Oncor delivery territory in Dallas County. Both the Dallas and Rockwall county portions of Rowlett participate in the same deregulated ERCOT North Texas market. Actual rates vary by retail provider and contract structure.
The SunScore™ Projection Engine applies NREL irradiation data for the Rowlett geographic zone, EIA-derived rate baselines for the 2024 reference year, and publicly available residential system performance assumptions to generate a modeled, non-binding estimated savings scenario. Rowlett's lake-proximity microclimate is noted as a contextual variable; city-level projections represent aggregate estimates. Individual results will vary.
Rowlett's location between Lake Ray Hubbard and surrounding water bodies may introduce localized humidity and occasional atmospheric variability at specific lakeshore properties. These microclimate effects are noted as property-level caveats in SunScore™ modeling rather than discrete projection inputs. The peninsular geography does not alter the utility delivery structure or incentive framework applicable to Rowlett homeowners. Assumptions documentation is available at /assumptions.