The Dallas–Fort Worth (DFW) metroplex is one of the largest emerging solar markets in the United States. Rapid population growth, expanding commercial construction, high summer electricity demand, and Texas's deregulated retail electricity market combine to create sustained solar opportunity. But like Houston, DFW solar design has to navigate Texas's specific utility structure (Oncor TDU + competing Retail Electric Providers), multi-city metroplex jurisdictional splits, and hail-heavy weather patterns that affect equipment and structural design decisions. This deep dive walks through each element.
DFW solar at a glance
- Permit authority (City of Dallas): City of Dallas Department of Development Services
- Permit authority (City of Fort Worth): Fort Worth Development Services Department
- Permit authority (metroplex cities): Individual city permit departments (Plano, Arlington, Irving, Frisco, McKinney, Garland, Grand Prairie, Denton, Lewisville, and many others)
- Permit authority (unincorporated county): County engineering departments across Dallas, Tarrant, Collin, Denton, and other counties
- State building code: Texas jurisdictions typically adopt ICC codes with local amendments; verify current edition with the AHJ
- State electrical code: NEC as adopted (verify current edition with the AHJ)
- Transmission and Distribution Utility (TDU): Oncor Electric Delivery — owns wires and handles interconnection but does not sell power
- Retail Electric Providers (REPs): Numerous competing REPs sell electricity to customers under Texas's deregulated market
- Weather: significant hail exposure drives equipment selection and structural considerations
Oncor and Texas's deregulated market for DFW solar
Like Houston, DFW operates under Texas's ERCOT market structure with a TDU/REP split:
- Oncor Electric Delivery: the TDU for the DFW metroplex. Oncor owns the wires, poles, and meters, and handles interconnection applications for solar. Oncor does not sell electricity to end customers.
- Retail Electric Providers (REPs): Numerous competing companies sell electricity to end customers. Customers choose their REP. Solar compensation policies depend on the specific REP contract, not on Oncor or state-level net metering.
Texas does not have traditional statewide net metering. Solar economics in DFW depend on the REP the customer chooses. Some REPs offer solar buyback plans; others do not. Solar EPCs need to be conversant with REP options and help customers select an REP that aligns with their solar system economics.
Multi-jurisdictional DFW metroplex
The DFW metroplex spans dozens of cities and multiple counties. Each city has its own development services department and permit process. Common patterns across the metroplex include ICC-based codes, PE stamping for larger projects, and Oncor as the TDU. Individual cities may have specific additional requirements. Always confirm current requirements with the AHJ processing the permit.
Hail and DFW solar equipment considerations
DFW sits in one of the most hail-prone regions in the US. Hail events can damage solar modules, racking, and rooftop equipment. Design considerations include:
- Module selection with strong hail impact certifications
- Racking with appropriate durability
- Consideration of hail insurance implications for commercial and larger residential systems
- Post-hail-event inspection and warranty coordination
Customer conversations on DFW solar projects often include hail exposure and equipment warranty coverage as differentiators.
DFW structural design considerations
- Design wind speeds per ASCE 7-22 for DFW are moderate but require appropriate attention
- Tornado activity in the broader North Texas region adds structural design consideration for extreme events
- Extreme summer heat drives conductor derating similar to Phoenix considerations
- Newer suburban DFW construction generally supports modern racking; older residential stock may require detailed structural analysis
Common DFW solar permit rejection reasons
- Structural analysis inadequate for DFW wind and hail conditions
- Oncor SLD format not matching utility conventions
- PE stamping missing where required
- Conductor sizing not adjusted for DFW ambient temperature derating
- Fire code pathway and setback requirements not clearly documented
- Rapid shutdown boundary and initiation devices not correctly documented
- REP selection and interconnection details inconsistent
- Multi-jurisdictional confusion — wrong city format submitted
DFW solar timeline expectations (general)
- Design and PE stamping: 1-3 weeks for straightforward residential
- Municipal permit review: variable across metroplex cities, weeks depending on AHJ
- Oncor interconnection (residential): variable; verify current timelines with Oncor
- Commercial projects: extended timelines depending on system size and interconnection studies
Where outsourced solar design fits into the DFW market
DFW's combination of ERCOT/Oncor structure, deregulated REP market, hail-prone weather, and multi-jurisdictional metroplex creates operational complexity. Solar EPCs and installers benefit from outsourced design partners who understand Texas market structure, Oncor interconnection formats, and DFW-specific design considerations.
RIH Engineering provides outsourced solar PV design for EPCs, installers, and developers operating in Dallas–Fort Worth and the greater Texas market. Our plan sets are prepared with Oncor interconnection formats, DFW-area structural analysis, and formatted for each AHJ across the metroplex. If you want to talk through how outsourced design fits your DFW pipeline, get in touch.
Frequently asked questions
Which utility handles solar interconnection in Dallas–Fort Worth?
Oncor Electric Delivery is the Transmission and Distribution Utility (TDU) for the DFW metroplex. Oncor owns and maintains the wires, poles, and meters and handles solar interconnection applications and technical reviews. Oncor does not sell electricity to end customers; that is done by competing Retail Electric Providers (REPs) under Texas's deregulated market.
Does Texas have net metering for solar in DFW?
Texas does not have traditional statewide net metering. Solar compensation in DFW depends on the Retail Electric Provider (REP) the customer chooses. Some REPs offer solar buyback plans with various structures; others do not offer meaningful compensation for exported solar. Solar EPCs help customers select an REP aligned with their solar economics.
Who issues solar permits in the DFW metroplex?
Each DFW metroplex city has its own development services department: City of Dallas Department of Development Services, Fort Worth Development Services Department, plus separate departments in Plano, Arlington, Irving, Frisco, McKinney, and many others. Unincorporated counties are handled by county engineering departments.
How does hail exposure affect DFW solar design?
DFW sits in one of the most hail-prone regions in the US. Hail can damage solar modules, racking, and rooftop equipment. Design considerations include module selection with strong hail impact certifications, appropriate racking durability, and hail insurance implications for larger systems. Post-hail inspection procedures are standard for DFW operators.
Do DFW solar plan sets require PE stamping?
Commercial and larger residential solar projects in the DFW metroplex generally require Texas-licensed PE stamping. Smaller residential projects may not require PE stamping depending on the AHJ. Always verify with the specific city or county AHJ for the project size and building type.