How Long Do Solar Panels Last?

How Durable Are Modern Solar Panels?

Solar power can be a long-term investment that pays off for decades. Durability and lifespan of solar panels and other solar system equipment is of course a primary concern for most homeowners and business considering a solar investment.

Modern solar panels are built with durability in mind, and with the right installation, they’ll deliver reliable energy for 25 years or more.

The Lifespan of Modern Solar Panels

On average, today’s solar panels last between 25 and 30 years. They don’t suddenly stop producing electricity when they reach that age. Instead, they gradually become slightly less efficient over time. Even after 25 years, most panels still operate at around 80–85% of their original output.

So ultimately, it depends heavily on your electricity needs, whether or not you have solar energy battery storage within your system, and your power generation efficiency tolerance to determine how long they’ll last for your home or business.

The Role of Warranties & Guarantees

Strong solar warranties back up this longevity. There are three main types of solar warranties:

1. Equipment performance warranties
2. Product manufacturer warranties
3. Installation workmanship warranties

Performance warranties typically guarantee that panels will produce at least 80% of their rated output after 25 years. This is often standard for high-quality modern solar equipment.

Product warranties cover defects in materials or manufacturing.

At Strawberry Solar, we install panels that meet these industry standards, and we go further by offering a 10-year solar workmanship warranty. That means your system is covered not just by the panel manufacturer, but also by our commitment to quality installation.

Why Modern Solar Panels Last Longer Than Ever

Advances in Manufacturing & Materials

Solar technology has come a long way. Today’s panels use stronger tempered glass, durable encapsulation layers, and advanced anti-reflective coatings. These improvements protect against weathering, UV damage, and mechanical stress, extending panel life.

Stringent Testing Standards

Every panel we install has been rigorously tested for extreme conditions, including hail impact, high winds, heavy snow loads, and wide temperature swings. International standards such as IEC (International Electrotechnical Commission) and UL 1703 (Underwriters Laboratories) certifications for equipment manufacturers ensure panels can withstand decades outdoors.

Solar Panel Durability & Degradation

Solar Panel Wear & Tear

Degradation is the gradual loss of efficiency that all solar panels experience. The industry average for solar panel degradation is about 0.5% per year. Over 25 years, that still leaves panels producing the majority of their original energy output.

Environmental stressors like UV exposure, moisture, and thermal cycling contribute to slow efficiency loss. Microcracks in cells may also develop over decades, but with modern materials and designs, these effects are minor and expected.

Solar Installation Quality

The number one factor in long-term durability is installation quality. Improper mounting, wiring, or sealing can shorten the life of even the best panels.

Strawberry Solar’s certified installers follow strict standards to ensure your system is secure, stands up to Michigan weather in all seasons, and is optimized for decades of performance.

Solar Panel Quality

Not all panels are created equal. Tier 1 manufacturers provide panels with proven reliability, robust warranties, and stronger long-term performance. Choosing high-quality equipment ensures your investment holds its value.

At Strawberry Solar, we are certified to work with all of the leading solar manufacturers and custom design each solar system with efficiency and durability in mind.

Environment & Climate Impact on Solar Panels

Climate plays a role in panel longevity. Panels in hot, humid, or coastal environments face more stress than those in moderate conditions.

Michigan’s four seasons present challenges like snow loads and temperature shifts, but colder temperatures can actually increase panel efficiency. Solar panels in Michigan can actually product energy very efficiently even considering seasonal periods lacking direct sunlight. With proper design and installation, panels thrive here year-round.

How to Maximize the Life of Your Solar Panels (Solar Panel Durability Checklist)

Solar energy systems, including panels, are generally low-maintenance, but a little care goes a long way. Occasional inspections help catch issues early. Keeping panels free of debris, shading, or animal nesting ensures optimal performance and durability.

End-of-Life Options for Solar Panels

Even after 30 years, panels often continue producing electricity, just at reduced efficiency. Homeowners may choose to:

1. Keep using the older solar panels at a reduced power generation rate: Even if output has declined, panels can still contribute meaningful power to your home or business.
2. Upgrade with additional solar panels: Adding newer panels alongside older ones can boost total output and efficiency.
3. Recycle the older solar panels: Dedicated recycling programs are emerging to recover valuable materials like silicon, glass, and metals for reuse.
4. Consider repurposing the older solar panels: Panels that still function can be relocated for lower-demand applications such as sheds, barns, or off-grid projects.
5. Consult your solar installer: An expert can help you decide when and how to transition, expand, or upgrade your system for maximum long-term value.

Strawberry Solar’s Advantage: Why Installation Expertise Matters

Your solar investment is only as durable as the team behind it. Strawberry Solar brings certified expertise, deep knowledge of Michigan’s climate, and a commitment to quality workmanship.

We don’t just install systems – we provide ongoing support and monitoring for peace of mind. With transparency and long-term partnership, we help ensure your solar panels last for decades.