Built to Outlast and Outperform Standard Solar Systems

When we talk to homeowners across Southern California, one of the most common questions we hear is:

‍“How long will my solar panels really last?”

It’s a smart question — because solar isn’t just about saving money today; it’s about making a long-term investment that keeps paying off year after year. The answer comes down to something called solar panel degradation, and understanding it can help you choose the right equipment and installer for maximum performance.

What Is Solar Panel Degradation?

Solar panel degradation is the gradual reduction in a panel’s energy output over time. All panels experience it — it’s a natural effect of constant exposure to sunlight, weather changes, and daily thermal expansion.

In simple terms: if a new solar panel produces 100% of its rated power today, it might produce around 99.75% next year, then 99.5% the year after, and so on. That’s normal. The key is how slowly that decline happens — and that’s where quality makes all the difference.

The average industry degradation rate falls between 0.5% and 0.8% per year. But not all panels age equally. High-quality brands like Qcells use advanced cell technology that cuts that rate in half — giving you more power, longer performance, and better ROI over time.

Why We Trust Qcells for Long-Term Performance

At US Power, we’ve installed many different solar brands, but Qcells stands out for its durability, efficiency, and warranty strength.

As of 2025, Qcells panels feature an industry-leading degradation rate of just 0.25% per year, backed by their Q.ANTUM DUO Z technology. That means after 25 years, their panels still perform at around 93–94% of their original output — one of the best records in the industry.

Qcells panels are also manufactured in the U.S., which allows us to offer factory-direct pricing through our exclusive partnership. That gives our customers the assurance of both American quality and long-term performance protection.

And it doesn’t stop there — Qcells includes a 25-year product and performance warranty, so you’re covered for both workmanship and expected energy yield.

What Causes Solar Panels to Degrade?

Even the most advanced solar panels face daily environmental stress. Here are the most common causes of degradation:

1. UV Radiation: Constant sunlight exposure slowly wears down protective layers.
2. Thermal Cycling: California’s hot days and cool nights cause slight material expansion and contraction.
3. Moisture & Corrosion: Humid coastal climates can affect internal components over time.
4. Mechanical Stress: Wind, debris, or improper mounting may cause microcracks.
5. Material Quality: Lower-quality panels simply can’t withstand decades of exposure like premium panels can.

This is why we emphasize professional installation and top-tier materials. When panels are properly installed and supported, they’re built to handle decades of California sun, wind, and temperature swings.

Real-World Example: Qcells vs. Standard Panels

That difference might look small on paper — but over 25 years, it’s huge. A Qcells system can generate thousands of kilowatt-hours more energy, meaning more long-term savings and faster payback under California’s NEM 3.0 net metering structure.

Why Degradation Matters Under NEM 3.0

Since the introduction of NEM 3.0, solar systems in California now receive lower export credits for excess power sent to the grid. This means that self-consumption and system efficiency are more important than ever.

The slower your panels degrade, the more energy you generate for your own use — helping offset high utility rates from providers like SCE, LADWP, and SDG&E. A low-degradation system like Qcells ensures your savings don’t fade over time, protecting your return even decades later.

How We Help You Maintain Top Performance

Solar doesn’t require much maintenance, but a little care goes a long way. At US Power, we guide every homeowner on how to protect their investment:

• Annual Inspections: We check your panels, wiring, and inverter health.
• Performance Monitoring: We set up monitoring apps so you can track your system’s production.
• Cleaning Guidance: We show you how to safely keep your panels dust-free for maximum sunlight exposure.
• Warranty Support: If anything ever goes wrong, our team handles warranty claims directly with Qcells.

We design each system not just for installation — but for sustained performance over decades.

The Long-Term Value of High-Quality Solar

A solar panel’s degradation rate directly affects how much you’ll save. With slower degradation, you maintain higher production, which means lower bills every year.

Even after 25 years, most solar systems we install still produce over 90% of their original output. That means decades of savings, increased home value, and energy independence — all from a clean, renewable source right on your roof.

Why Southern California Homeowners Choose US Power

We’re proud to serve communities across Southern California with reliable, high-efficiency solar systems that stand the test of time. From Sherman Oaks to Orange County, our focus is simple: deliver the best solar experience possible, from consultation to installation and beyond.

Because when you go solar, you’re not just lowering bills — you’re investing in a cleaner, more resilient future for your family and your home.

Get the Most from Your Solar Investment

If you’re ready to take control of your energy costs and power your home with a system built to last, we’re here to help.

At US Power, we provide factory-direct Qcells panels, expert local installation, and full-service support to keep your system performing at its best — year after year.

Schedule your FREE Solar Consultation

‍Let’s build your energy future with panels designed for performance, protection, and peace of mind.