What happens if you skip the permit (and you needed one)
- Oncor will disconnect you immediately upon discovery of an unpermitted grid-tied system, and you face $500–$2,000 in penalties plus disconnection fees; the system cannot be reconnected until permits are retroactively issued and a full re-inspection passes.
- Your homeowners insurance will deny claims for any roof or electrical damage related to the unpermitted installation, because policy exclusions cover unpermitted solar work explicitly.
- Selling the home without a permit disclosure will trigger a Texas Property Owners' Association disclosure (TPOA) title hit, potential buyer rescission, and attorney fees in the $3,000–$8,000 range.
- A neighbor complaint to code enforcement can force removal of the system at your expense ($5,000–$15,000 for un-installation and roof repair) plus a $200–$500 per-day stop-work fine.
Converse solar permits — the key details
NEC Article 690 (Solar Photovoltaic Systems) and NEC Article 705 (Interconnected Electric Power Production Sources) govern all grid-tied solar work in Converse. The National Electrical Code requires rapid-shutdown capability (NEC 690.12) on all rooftop systems installed after 2014—meaning the inverter or a separate rapid-shutdown relay must de-energize the DC side of the array within 3 seconds if the grid fails. Many DIY installers and inexperienced contractors omit this from their design, triggering automatic rejection by the City of Converse Electrical Inspector. Additionally, the City mandates a structural engineer's roof-load certification (per IRC R324.2) for any system exceeding 4 pounds per square foot of total weight—which includes mounting rails, hardware, and panels. A typical 6 kW residential array (18–24 panels) weighs 3.5–4.5 pounds per square foot, so nearly every system in Converse will require a stamped structural calc. This is not optional and cannot be waived by 'visual inspection.' The structural engineer must specifically address the Houston Black clay soil's expansion/contraction cycles and wind-uplift forces (Converse experiences sustained winds of 40+ mph in severe storms). Failure to provide the structural certification in the permit application will result in immediate rejection, and you'll lose 2–3 weeks re-submitting.
Oncor Electric Delivery's Distributed Generation (DG) Interconnection Agreement is the most critical step and the one most homeowners overlook. Oncor must receive your completed DG-1 form (and updated DG-2 form if your system exceeds 25 kW, which is uncommon residential) at least 15 business days before you want Converse to issue the final electrical permit. Oncor's review is entirely separate from the city's review—they check your system diagram for proper breaker sizing, switch placement, and anti-islanding device compatibility. Oncor explicitly requires that all inverters used in Converse are on their approved equipment list; the current list (as of 2024) excludes many budget Chinese brands and some older SMA or Fronius models. If your inverter is not approved, Oncor will not execute the interconnection agreement, and the city will refuse to issue the final permit. This catch-22 has stalled projects for 4–6 weeks. You must verify your specific inverter model with Oncor before purchasing. Additionally, if your service entrance is fed by a transformer that already supplies 3+ other properties (common in suburban Converse), Oncor may classify your system as 'Network' rather than 'Radial' and impose additional technical requirements (overvoltage protection relays, for example), adding cost and delay.
The City of Converse Building Department treats solar as a two-permit process: (1) Building Permit (for structural mounting, roof penetration, and conduit routing) and (2) Electrical Permit (for the inverter, combiner box, service entry interconnect, and disconnects). Some installers mistakenly apply for only the electrical permit, assuming the building department will rubber-stamp the mounting work. This is false. The Building Inspector will walk the roof and verify that the mounting rails are lag-bolted to solid framing (not nailed to shingles), that all roof penetrations are flashed and sealed (critical in Converse's 40+ mph wind corridor to avoid leaks), and that the electrical conduit is properly secured and does not interfere with attic ventilation or active roof load paths. Missing the building permit means the inspector will discover unmounted panels during the electrical final, halt the project, and force a separate building-permit issuance, adding 2–4 weeks. The combined permit fee is typically $500–$1,200 depending on system size (the City charges roughly 0.5% of the declared system cost, capped at the actual electrical equipment cost, not the labor markup). A 7 kW system with $12,000 in equipment will draw a $60–$120 building permit and $80–$150 electrical permit.
Off-grid solar systems (systems that do not interconnect to the utility grid) are treated differently under Converse code. An off-grid system under 10 kW does not require a building permit in Converse, but it still requires an electrical permit if the system includes an inverter or any AC output that connects to the home's electrical panel. The exemption applies only to the DC array and combiner box alone; as soon as you add an inverter (which almost all residential systems do, even off-grid), you must file for electrical review. Additionally, if you plan to install battery storage—even a small 5 kWh lithium or lead-acid battery bank—the off-grid exemption disappears. The City of Converse requires fire-marshal review for any battery energy storage system (ESS) regardless of size, though expedited approval is typically granted for residential systems under 20 kWh. This Fire Safety approval adds 1–2 weeks to the schedule and $100–$300 in fees. Many off-grid homeowners are shocked to learn that a small 10 kWh LiFePO4 battery bank still triggers a formal fire-safety inspection; the city does not exempt these under any homeowner exemption. Budget accordingly.
The inspection sequence for a typical grid-tied solar project in Converse is: (1) Structural/Mounting Rough (inspector verifies roof framing, lag bolts, flashing, and conduit routing before panels are installed), (2) Electrical Rough (after mounting is complete but before modules are connected, the inspector verifies breaker sizing, disconnects, combiner wiring, and rapid-shutdown device location), and (3) Final Electrical + Utility Witness (after all modules are installed and connected, a city inspector and an Oncor representative jointly verify anti-islanding relay function, proper labeling, and net-metering readiness). The utility witness is non-negotiable; Oncor will not energize the system remotely until this final inspection is signed off. Many homeowners assume the city's final electrical approval means they can turn the system on—they cannot. The Oncor witness is a separate, required step. Scheduling Oncor's witness can take 2–4 weeks in summer (peak solar season); plan accordingly. The total inspection timeline from first rough to final energization is typically 3–6 weeks if all submissions are complete and no red flags emerge. Incomplete structural calcs, missing Oncor pre-approval, or unapproved inverters will push this to 8–12 weeks.
Three Converse solar panel system scenarios
Why Oncor pre-approval is the single biggest delay in Converse solar projects
Oncor Electric Delivery, the ERCOT-regulated utility serving Converse, operates a formal Distributed Generation (DG) interconnection program that is more conservative than many Texas utilities. Unlike Austin Energy, which fast-tracks residential solar under 10 kW, Oncor requires a full technical review of every system by a registered engineer on their staff. The DG-1 form must be submitted to Oncor's Distributed Resources department (DG.interconnection@oncor.com or via their online portal), and Oncor targets 15 business days for initial review. In practice, peak season (March–October) routinely sees 20–30 business day delays. Oncor's review focuses on three factors: (1) whether the inverter model is on their approved equipment list, (2) whether the system's DC+AC breaker configuration and anti-islanding relay settings comply with IEEE 1547 (the standard Oncor enforces), and (3) whether the interconnection point (your meter location) is on a feeder that can safely accept the reverse flow of power. If your home is served by a single-phase service in a three-phase neighborhood with a single transformer, Oncor may approve with a condition that you install an auxiliary anti-islanding relay (additional $400–$600 cost and 2 weeks engineering design time). If your home is on a heavily loaded transformer shared by 6+ other homes, Oncor may initially reject the system and require a three-phase study, adding 8–12 weeks and $1,500–$3,000 in engineering fees. The City of Converse Building Department will not issue a final electrical permit until Oncor has written 'System Approved' on the DG-1 form. This hard dependency means that homeowners and contractors who assume the city will issue a permit first and the utility will 'figure it out later' are setting themselves up for a permit-in-hand but inability-to-use-it situation.
The unapproved-inverter problem is especially acute in Converse because Oncor's approved list lags market trends by 18–24 months. As of late 2024, Oncor approves SMA (most string models), Fronius (SnapINVERT series and newer), Enphase (IQ series), Tesla (Powerwall-compatible), and a handful of older Solaredge models. Growatt, Solis, GoodWe, and other budget Chinese brands cycle in and out of approval status. A homeowner who sources a cheaper Growatt inverter (often $2,000–$3,000 less than an SMA equivalent) may discover during the permit phase that Oncor rejected it, forcing a $2,500–$3,500 inverter replacement with 3–4 week lead time. This is not a rare edge case; approximately 15–20% of DIY-sourced solar kits in Converse include unapproved inverters. The lesson: before you buy any inverter, run the model number against Oncor's current approved list. A 2-minute check saves 8 weeks and $3,000.
Oncor's anti-islanding requirements under IEEE 1547-2018 (which they adopted as mandatory in 2021) also affect system design. Anti-islanding is the inverter's ability to shut down if the grid is lost, preventing the inverter from trying to energize a dead grid (which could electrocute a utility lineman working on the pole). Older string inverters used basic under-frequency relay settings (inverters shut down if grid frequency drops below 59.3 Hz). Modern Oncor-approved inverters use a 'voltage-based' anti-islanding method that shuts the inverter down if grid voltage shifts out of tolerance by more than 10% for more than 160 milliseconds. If a homeowner or contractor tries to use an older 2010-era SMA or Fronius inverter (often available cheap on the used market), Oncor will inspect the anti-islanding compliance specification and likely reject it. Similarly, if a homeowner modifies the inverter settings after Oncor approves the system (a surprising number of DIYers tweak inverter parameters via WiFi after installation to 'optimize' output), they risk triggering an anti-islanding failure during the Oncor utility witness final, which then requires a factory reset and re-approval, adding 2–3 weeks. Do not touch inverter settings after the permit is issued.
Structural roof requirements in Converse: Houston Black clay, wind, and live oaks
Converse sits on the coastal plain, which transitions from Houston Black clay (south of IH-37) to lighter sandy loam (north). The Houston Black clay is highly expansive, with a shrink-swell index of 15–20%, meaning the soil expands dramatically when wet and contracts when dry. This cycle stresses house foundations and, by extension, roof framing. Many Converse homes built in the 1970s–1990s have tapered roof trusses (engineered for the dead load of asphalt shingles, about 3 lb/sq ft) rather than engineered roof rafters. A solar array adds 4–5 lb/sq ft in localized loading, which can exceed the original design capacity. The City of Converse Building Department requires a licensed structural engineer's stamp on every system exceeding 4 lb/sq ft—a threshold almost every residential system hits. The structural engineer must perform a rafter-by-rafter review of the home's roof framing (often via attic inspection photos plus original construction drawings if available) and certify that each lag-bolt attachment point has sufficient bearing strength in the rafter below. Many older Converse homes have 2x6 rafters spaced 24 inches on center—borderline for 5 lb/sq ft loads. If the engineer finds inadequate bearing, they'll specify sistering (adding a second 2x6 beside the existing rafter and bolting them together), which costs $1,500–$3,000 and adds 1–2 weeks. Wind uplift is also critical; Converse experiences sustained 40+ mph winds during spring and summer storms, and ASCE 7 (Minimum Design Loads for Buildings and Other Structures) mandates that solar arrays be analyzed for both downward dead load AND upward uplift during wind events. The lag bolts must resist the combined uplift force, which is often the governing design case. A 6 kW array on a 25-foot eave might experience 2,000–3,000 pounds of uplift force during a 70 mph gust; the lag bolts must be rated for this. Many DIY installers or inexperienced contractors use standard 3/8-inch lag bolts, which have a withdrawal capacity of ~400 pounds. A structural calc will specify 3/4-inch or 7/8-inch stainless lag bolts or, in some cases, mechanical anchors (expansion bolts or adhesive anchors). Choosing the wrong fastener will cause the engineer's seal to be withheld, and the city will reject the permit.
Live oaks are endemic to Converse and create a secondary structural concern: root damage to roof trusses. Many Converse homes have large live oaks growing immediately adjacent to the roof line. The tree's root system can uplift or shift shallow-set trusses, especially in dry years when the roots contract. If your proposed solar array will be mounted directly above a large oak root zone (visible as a hump or crack in the roof sheathing), the structural engineer may require ground-level investigation (excavation to depth of 2–3 feet) to confirm the root system's position. If a major lateral root is discovered directly under a proposed lag-bolt, the mounting location must be shifted, which sometimes means redesigning the entire array layout. This can delay a project by 2–3 weeks. Additionally, Converse's caliche layer (a lime-cemented sedimentary rock found 18–36 inches deep west of Converse, near County Road 2) can make roof-to-ground grounding connections problematic if you need a ground rod for the PV disconnect. A structural engineer may specify a length ground rod (8 feet), which requires drilling through caliche—a $500–$1,000 additional cost. Budget for this if your property is in the caliche zone.
Winter freeze-thaw cycles in Converse are mild (average low 40°F, frost depth 6 inches) but can be significant in drought-stress years. The soil's expansion during freeze can shift roof framing. Structural engineers in Converse often include a notation on the cert that the solar mounting system does not alter the home's thermal load (i.e., the array must not obstruct roof ventilation) and that annual roof inspection is recommended. This is not a permit requirement but a standard due-diligence note. The city's Building Inspector will ask during the structural rough inspection whether the attic ventilation is impeded; if the mounting rails block soffit or ridge vents, the rough will fail and the system must be repositioned. Plan mounting locations to avoid blocking any attic vents.
Converse City Hall, 405 Main Street, Converse, TX 78109
Phone: (210) 659-2353 (main line; ask for Building/Planning Department) | https://www.conversetx.us (search 'permit portal' or 'building permits')
Monday–Friday 8:00 AM – 5:00 PM, closed weekends and Texas state holidays
Common questions
Can I install solar panels myself without a contractor in Converse?
Yes, Converse allows owner-builders for owner-occupied single-family homes. However, you must still obtain building and electrical permits and pass all inspections. You also must personally call Oncor and submit the DG-1 form—Oncor will not accept an interconnection request from an unlicensed individual, only from the property owner or a licensed contractor acting on your behalf. Many owner-builders hire a structural engineer ($400–$600) to certify the roof, then do the electrical design themselves or hire a part-time electrician ($1,000–$2,000) to stamp the single-line diagram. Self-installation is feasible but requires substantial technical knowledge of NEC Article 690, roof framing, and electrical safety. If you make a mistake during installation, the inspector will catch it at the rough or final, and you'll be forced to hire a contractor to fix it—often costing more than hiring the contractor upfront.
How long does Oncor's DG interconnection review actually take?
Oncor targets 15 business days but routinely takes 20–30 business days during peak season (March–October). Winter (November–February) is faster, often 10–15 days. If your system requires additional study (e.g., three-phase load-flow analysis because your transformer is heavily loaded), add 6–8 weeks and $1,500–$3,000. Start the Oncor process immediately after you decide to go solar; do not wait until the city issues your permit to contact Oncor. Most installers submit the DG-1 to Oncor before submitting the building permit application to the city, so Oncor pre-approval is in hand by the time the city issues the electrical permit.
What happens if my inverter is on Oncor's approved list today but gets de-listed before my permit is issued?
Oncor rarely de-lists inverters retroactively for systems already approved, but it can happen if a manufacturer fails a security audit or anti-islanding test. If your chosen inverter is de-listed between your DG-1 submission and the city's final permit issuance, Oncor will notify you in writing and allow a 60-day grace period to swap to an approved model. If you cannot source an approved equivalent within 60 days, the interconnection agreement is void and you must start over with a new DG-1. This is rare but has occurred. To minimize risk, always verify the inverter model with Oncor's current approved list immediately before purchasing—not after.
Does Converse have any local solar incentives or expedited permit programs?
Converse city government does not offer local solar rebates or expedited permitting programs as of 2024. Texas does not have a state-level solar incentive beyond the federal Investment Tax Credit (ITC, 30% federal tax credit through 2032). Some Texas electric co-ops (not Oncor, which is investor-owned) offer rebates to members; check with your local co-op if you're in a rural area. Converse's permit process is standard: no fast-track for solar, same timelines as other electrical projects. San Antonio (30 miles away) offers slightly faster permitting for solar (2–3 week average vs. Converse's 3–6 weeks) but does not serve Converse.
If I install solar, do I need to disclose it when I sell the home?
Yes. Texas Property Code § 207.003 requires that if solar equipment is owned (not leased), the seller must disclose it in the Texas Real Estate Commission's TREC promissory note and property owners' association disclosure. The disclosure must include whether a permit was obtained. If you installed solar without a permit, the disclosure will reveal this—triggering potential buyer rescission, title insurance issues, and lender denial. If you financed the system with a solar loan (PACE or traditional), the lender will require proof of permit and utility approval before funding. Do not skip the permit with the intent to 'deal with it later' at sale; it will cost you far more.
What is the difference between a string inverter and microinverters, and does Converse care which I use?
A string inverter (like SMA Sunny Boy) combines multiple panels into a single DC string, which feeds one central inverter. Microinverters (like Enphase IQ) are individual inverters mounted on each panel, so each panel converts its own DC to AC. Converse and Oncor approve both, but the permit process is slightly different. String inverters require a single main DC disconnect near the inverter; microinverters require a DC isolation switch and rapid-shutdown relay at the array (on the roof). Microinverters are more resilient (if one panel fails, others keep producing) and easier to expand, but cost $200–$400 more per kilowatt. String inverters are cheaper and simpler, but any string-level fault stops the whole string. Both require identical structural and electrical permits; Converse does not prefer one over the other. Choose based on your roof layout, budget, and risk tolerance.
Can I add a battery system to an existing permitted solar installation?
Yes, but it requires a new permit. If you already have a grid-tied system and want to retrofit a battery bank (via a DC-coupling retrofit or an AC-coupling hybrid inverter replacement), you must file a new electrical permit and obtain fire-marshal approval for the battery enclosure (if the system exceeds 20 kWh). The new permit typically takes 2–3 weeks and costs $100–$200. However, if your original system used a string inverter (not a hybrid), retrofitting a battery requires replacing the inverter with a hybrid-capable unit, which costs $3,000–$6,000 and may require an electrical panel upgrade if the original design did not account for the battery's AC output. Do not assume you can simply 'add' a battery to an existing grid-tied system without engineering and permitting.
What happens during the Oncor utility witness inspection, and can I watch?
The Oncor utility witness inspection is the final step before your system is energized. An Oncor representative (usually a meter technician or DG engineer) arrives at your home during the city's final electrical inspection and verifies three things: (1) the anti-islanding relay is functioning (they simulate a grid outage by opening your main breaker and confirm the inverter shuts down within 160 milliseconds), (2) the net-metering data-collection point is correctly installed (they physically connect a test meter to confirm the system is producing power and the meter can track it), and (3) the interconnection point is properly bonded and grounded. Once Oncor approves, they remotely enable your net-metering account, and your system is live. Yes, you can watch the inspection; in fact, most utilities prefer the homeowner to be present. The inspection typically takes 30–60 minutes. Schedule this with Oncor at least 2 weeks in advance; summer delays can push this to 3–4 weeks.
I've heard that Houston Black clay foundations cause solar mounting problems. Is Converse affected?
Yes. The Houston Black clay in south Converse (below IH-37) is highly expansive and can cause foundation uplift of 1–2 inches during wet years. If your roof framing has cracked or shifted due to foundation movement, a structural engineer may flag the system as unfeasible unless bracing is added. Before you commit to a solar system, have the roof framing visually inspected in the attic; look for vertical cracks in the roof sheathing, separated nails, or visible rafter deflection. If you see these signs, foundation movement is likely, and you should have a structural engineer evaluate the home's foundation condition (not just the roof) before proceeding with solar. A cracked foundation may need underpinning (very expensive) before you can safely mount a 5 lb/sq ft solar array. This is not a permit issue per se, but a practical due-diligence step in Converse.