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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteThree types of warranty. Multiple manufacturers. Texas-specific heat concerns. Here is exactly what is covered — and what is not — when you go solar in Texas.
Every solar installation involves at least three separate warranty agreements from two different parties. Understanding each is critical — they cover different things, have different durations, and require different actions when something goes wrong.
Provided by the panel manufacturer. Covers defects in materials and workmanship — the panel itself failing due to something the factory did wrong. Standard is now 25 years for tier-1 manufacturers.
Also provided by the panel manufacturer. Guarantees the panel will produce at least a minimum percentage of its original rated power output at specified intervals. This is the warranty that directly protects your electricity production — and your return on investment.
A Silfab 440W panel with a 30-year performance warranty at 86.6% must produce at least 381W at year 25 and 80% (352W) at year 30. If professional testing shows output below the threshold, Silfab must replace or compensate. The degradation rate (0.40%/yr for Silfab, 0.25%/yr for REC) determines the minimum output at any year.
Provided by the solar installer (not the manufacturer). Covers problems caused by how the system was installed — roof leaks from improper flashing, loose racking, exposed wiring, and similar installation defects. This is often the most overlooked warranty.
Texas extreme heat causes racking materials to expand and contract significantly more than in cooler climates. This thermal cycling can loosen bolts and shift panels over time — which is an installation quality issue, not a panel defect. Always ask: what is the workmanship warranty duration, and does it specifically cover roof penetration integrity?
All tier-1 panels now offer 25-year product warranties. The key differentiators are performance warranty length, guaranteed output percentage at year 25, and annual degradation rate.
| Brand / Model | Product | Performance | Output @ Yr 25 | Degradation | Notes |
|---|---|---|---|---|---|
| Silfab 440W (SIL-440-BHC)NuWatt Standard | 25 yr | 30 yr | 86.6% | 0.40%/yr | FEOC-compliant, NuWatt standard |
| REC Alpha 460W | 25 yr | 25 yr | 92.0% | 0.25%/yr | Best-in-class degradation rate |
| Q.CELLS Q.PEAK 435W | 25 yr | 25 yr | 86.0% | 0.45%/yr | Q.ANTUM DUO technology |
| Hyundai HiS-S440RG | 25 yr | 25 yr | 86.3% | 0.45%/yr | Entry-level option |
Lower annual degradation rates mean higher lifetime output. REC's 0.25%/yr rate is among the best available — over 25 years, the difference between 0.25% and 0.45% is approximately 5% more energy production.
Your inverter converts DC power from panels to AC power your home uses. It is the most failure-prone component of a solar system — and has the widest warranty variation.
| Inverter Type | Standard Warranty | Extended Option | Notes |
|---|---|---|---|
| Enphase IQ8 Series (microinverter) | 25 yr | Included | Best warranty in class. Individual units replaceable. |
| SolarEdge Home Hub (string w/ optimizers) | 12 yr | 20-25 yr (purchased) | Optimizers: 25 yr. Inverter must purchase extension. |
| Standard string inverter (various) | 10-12 yr | 15-20 yr (purchased) | Lowest upfront cost, highest replacement risk at year 12. |
Enphase's 25-year warranty matches the panel warranty, eliminating the mid-life inverter replacement cost. In Texas's heat, microinverters also benefit from being under the panels (shaded) rather than on an exterior wall in direct sun — reducing thermal stress on the electronics. Each panel operates independently, so one failed microinverter does not affect the rest of the array.
Ask for 25-year workmanship. In Texas, you will need it more than in most states.
Texas roof temperatures can swing from 32°F in winter to 170°F in summer on the same roof. Every expansion-contraction cycle stresses roof penetrations, racking bolts, and flashing. Poor flashing that holds for 5 years may start leaking at year 10.
Every roof mount creates a penetration point. Improperly flashed mounts are the #1 source of post-installation roof leaks. Ask your installer specifically: does your workmanship warranty cover roof leaks caused by solar installation for the full term?
Hailstorms shift racking. High winds (common in West Texas and during hurricane season) stress mounting hardware. A 10-year workmanship warranty may expire before hail-shifted mounting causes a leak. A 25-year warranty protects you throughout the panel's productive life.
UV exposure degrades conduit and wire insulation faster in high-sun Texas. Connections that arc from improper torquing are a fire risk. Workmanship warranty covers these installation-caused failures; the manufacturer warranty does not.
This list surprises many homeowners. Knowing the gaps helps you understand what separate insurance coverage you need.
| Issue | Warranty Covers? | Where to Look Instead |
|---|---|---|
| Hail damage | Homeowners insurance (wind/hail coverage) | |
| Lightning strike | Homeowners insurance | |
| Flooding or water intrusion | Homeowners insurance | |
| Tree falls or physical impact | Homeowners insurance | |
| Fire (external cause) | Homeowners insurance | |
| Squirrel/pest damage to wiring | Critter guard + homeowners (check exclusions) | |
| DIY modifications or repairs | Nothing — voids warranty | |
| Improper installation | Installer workmanship warranty | |
| Normal performance degradation (within spec) | Degradation is expected and disclosed |
Texas solar operates in one of the most demanding thermal environments in the US. These factors do not void warranties — but understanding them helps you choose panels that hold up best.
Every panel loses output as temperature rises above 25°C (77°F). The temperature coefficient spec tells you how much. A panel with -0.30%/°C loses 0.30% output per degree above 25°C. In Houston summer (rooftop panel at 70°C), that is a 13.5% real-time power loss. Better panels have smaller coefficients.
Texas panels cycle between near-freezing winter nights and extreme summer heat daily. Each thermal cycle stresses connections, solder joints, and encapsulant. Over 25 years, this accelerates micro-cracking. Dual-glass panels are more resistant to thermal cycling stress than single-glass.
Texas has among the highest solar irradiance in the US. High UV exposure accelerates EVA encapsulant yellowing and potential delamination over time. Premium panels use UV-resistant encapsulants. Performance warranties account for expected UV degradation — but early yellowing is a warranty claim.
West Texas and Dallas-Fort Worth experience significant dust and pollen. Dirty panels can lose 5-10% output in peak season. While cleaning is owner maintenance, persistent soiling from manufacturing defects in hydrophobic coating may be warrantable.
Look for panels with a temperature coefficient of -0.30%/°C or better (lower number). On a 70°C Texas rooftop, a panel rated -0.30%/°C loses 13.5% real-time output versus 20.25% for a -0.45%/°C panel. REC Alpha panels achieve -0.24%/°C — among the best available for hot climates.
A warranty is only as good as your ability to claim it. Most homeowners take no action after installation — which can create problems years later.
Most manufacturers require registration within a set window. Silfab and REC have online portals. Your installer should complete this — but confirm they did. Check for a registration confirmation email.
Save: installation contract, equipment invoices showing model/serial numbers, warranty registration confirmations, permit and inspection approvals, and system design documents. Cloud backup recommended.
For product/performance claims: contact the panel manufacturer directly. For workmanship claims: contact your installer first, then escalate if unresponsive. Keep installer contact info current.
Manufacturer warranty claims typically require professional IV-curve testing or thermal imaging — not just monitoring software data. Budget $200-400 for a professional inspection if you suspect a warranty issue.
This is one of the most important questions to ask before choosing a solar company — and most homeowners never think to ask it.
Your panel manufacturer warranty (product + performance) is between you and the manufacturer — completely independent of your installer. If Silfab or REC exists in 2045, your warranty is valid regardless of what happened to the company that installed your system.
Your installer workmanship warranty is only as good as the company behind it. If your installer closes, the workmanship warranty is worthless. You have no one to call for installation-related leaks, loose racking, or wiring failures. This is why company longevity and financial stability matter.
We believe a warranty is only valuable if the company behind it will still be there to honor it. Here is what NuWatt provides on every Texas installation.
Every NuWatt installation includes a 25-year workmanship warranty covering installation quality, roof penetration integrity, racking, and wiring.
Silfab 25-year product warranty and REC 25-year product warranty — both from manufacturers with long-term financial stability.
Every NuWatt system uses Enphase IQ8 microinverters with a 25-year warranty included in the standard purchase price — no extension to buy.
All Propel installations use FEOC-compliant Silfab 440W panels — which carry a 30-year product warranty and 30-year performance guarantee, some of the best coverage in the industry. A third-party owner installs the system and claims the 40% Section 48E ITC, passing the savings to you as a fixed monthly payment. An 8 kW system at $2.90/W ($23,200) becomes ~$13,920 effective cost at ~$117/month. 8.99% APR, 25-year term, 660 FICO minimum. Must begin construction before July 4, 2026.
See Propel Financing DetailsNuWatt provides 25-year workmanship, Silfab/REC 25-year product warranties, and Enphase 25-year microinverter coverage on every Texas installation.
See Texas Solar OptionsSolar systems come with three distinct warranties. (1) Product warranty (12-25 years): covers manufacturing defects — delamination, premature degradation, electrical failures caused by the panel itself. (2) Performance warranty (25-30 years): guarantees the panel produces at least a minimum percentage of its rated output at a given year — typically 80-87% at year 25 for standard panels, up to 92% for premium panels. (3) Workmanship warranty (1-25 years): covers the installation quality — roof penetrations, wiring connections, racking system. This is the installer's warranty, not the manufacturer's.
In Texas, a 25-year workmanship warranty is the gold standard. Extreme heat causes thermal expansion and contraction, which can loosen roof penetrations and racking connections over time. Hail can shift panels in racking. A 10-year workmanship warranty may not protect you when these issues appear at year 12-15. Always ask specifically: does the workmanship warranty cover roof penetration leaks?
Your manufacturer warranty (product and performance) remains fully valid regardless of what happens to your installer — it is between you and the manufacturer. Your installer workmanship warranty, however, dies with the company. If the installer closes, you have no one to call for installation-related issues. This is why installer longevity matters. Ask how long the company has been in business, check their BBB rating, and verify they carry contractor liability insurance.
No — panels are designed for outdoor use including high temperatures. Operating at 70°C on a Texas rooftop is within designed parameters. What the heat does is accelerate degradation slightly faster than cooler climates, which is why the performance warranty includes a degradation rate (like 0.40%/yr for Silfab or 0.25%/yr for REC). As long as your panels degrade within the warranted rate, you are fully covered. Faster-than-warranted degradation is a valid warranty claim.
A performance warranty guarantees your panels produce at least a specified percentage of their original rated power at certain points in time. For example, a panel rated 440W with a guarantee of 86.6% at year 25 must produce at least 381W at year 25. If measured output falls below this threshold — after accounting for temperature and soiling — you can file a warranty claim. The manufacturer typically replaces or compensates for the deficit. Important: claims require professional testing, not just monitoring software estimates.
The hotter a solar panel runs, the more stress it experiences. In Texas, panels regularly operate at 65-75°C on summer days versus 45-55°C in New England. Higher operating temperatures slightly accelerate the physical processes that cause degradation. Choosing a panel with a low degradation rate (like REC at 0.25%/yr vs. 0.50%/yr for budget panels) provides a larger buffer against Texas-specific thermal stress. Over 25 years, the difference between 0.25% and 0.50% annual degradation is about 4-6% in total output — hundreds of kilowatt-hours per year on a typical system.
Yes, with most manufacturers. Silfab, REC, and Q.CELLS all require warranty registration within a specified window (typically 30-90 days from installation). Your installer may handle this automatically, but you should confirm. Without registration, the warranty default period may be shorter (often 10 years instead of 25). Keep all registration confirmation emails in a dedicated folder along with your installation contract, equipment invoices, and system design documents.
Yes — Enphase IQ8 microinverter warranties are transferable to a new homeowner when you sell your home. This makes Enphase systems particularly attractive for resale value. SolarEdge optimizer warranties (25 years) are also transferable, but inverter extended warranties may or may not be depending on the specific agreement. Always request transferability confirmation in writing from your installer.