Solar Savings Analysis — Wylie, Texas

Electricity Market Structure in Wylie

Wylie is served by Oncor Electric Delivery and participates in the ERCOT deregulated retail electricity market. Spanning portions of Collin, Dallas, and Rockwall counties near the junction of Lake Lavon and Lake Ray Hubbard, Wylie has transitioned into a significant northeast DFW residential hub.

Wylie is positioned within the ERCOT North Load Zone. The city's location between two major reservoirs introduces a geographic context characterized by high residential growth amidst lakeside environmental buffers. Its distribution infrastructure is part of Oncor's northeast DFW network, which has seen substantial capacity expansion to support current and projected suburban load growth.

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 — Wylie

Wylie, 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 — Wylie

Oncor Electric Delivery serves Wylie 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 — Wylie (EIA 2024 Reference Year)

Residential electricity rate modeling for Wylie references EIA Form 861 data for the 2024 reference year for the Oncor delivery territory. Wylie's presence in three counties — Collin, Dallas, and Rockwall — does not produce materially different retail rate outcomes as all portions fall within the same deregulated market framework and Oncor delivery infrastructure.

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 Wylie 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 — Wylie

Avoided cost for Wylie is modeled using the ERCOT North Hub wholesale-proxy baseline. The self-consumption economics in Wylie's residential market are consistent with other North Texas Oncor-territory cities: solar energy consumed on-site avoids the retail rate, while grid export is valued at materially lower wholesale-proxy levels. SunScore™ projections for Wylie weight self-consumption accordingly.

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 — Wylie (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 Wylie 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 — Wylie

Wylie's geographic position between Lake Lavon to the north and Lake Ray Hubbard to the south produces a microclimate characterized by marginally different atmospheric conditions — including humidity profiles and localized cloud formation — than found in more inland DFW suburbs. These factors, while subtle, can influence solar production performance in lakeside environments. SunScore™ projections utilize city-level NREL irradiation data that capturing regional averages, while noting localized microclimate variability as a contextual caveat. Wylie's residential stock is predominantly newer subdivision construction, which typically provides consistent roof siting conditions for solar assessment.

SunScore™ projections for Wylie are generated by synthesizing NREL irradiation data for the Wylie 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 Wylie

Homeowners in Wylie 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.