Why Panel Quality Matters More Than You Think

Most people think all solar panels look the same — shiny blue or black glass, framed in silver. But what truly matters is what’s under the glass. The internal quality of a panel decides whether it will perform reliably for 25 years or start degrading in just a few.

Over the years, we’ve come across several solar projects — especially ones done by low-cost vendors — where hidden defects inside panels have caused major performance issues within just a few years of installation. In most of these cases, the root cause was the use of cheaper, Grade B modules. They might look similar on the surface, but they often compromise on materials and testing. The result? A few thousand rupees saved upfront turns into lakhs lost later due to poor generation and early replacement.

Let’s sit down together and walk through the most common issues we see in low-grade solar panels, and why choosing Renowatt provides Grade A PV modules in the kit that eliminates these risks for good.

1. Micro Cracks – The Silent Energy Killers

Micro cracks are tiny hairline fractures in solar cells — often invisible to the naked eye. They usually happen because of rough handling during transport, poor installation, or stress during manufacturing.

At first, they don’t seem like a big deal. But over time, these cracks spread, disconnecting parts of the cell from generating power — like a slow puncture in your energy tank. The result? Gradual but consistent loss in your panel’s output and lifespan.

2. Potential Induced Degradation (PID) – The Hidden Performance Killer

Ever heard of panels losing up to 30% of their performance within just 2–3 years?That’s PID. It happens due to high system voltages causing current to leak between the solar cells and the frame. Once it starts, it spreads rapidly across the entire array.

Our Grade A Renowatt panels are built with superior encapsulant materials and cell spacing that minimize PID risk — ensuring consistent generation and stable performance for decades.

3. Delamination – When Layers Fall Apart

Think of your solar panel like a perfectly sealed sandwich — each layer bonded tightly to protect the cells inside. When manufacturing quality drops, this bonding fails. Moisture sneaks in, causingdelamination — the separation of layers.

Moisture inside a solar panel is like letting rust into your car engine — it corrodes, degrades, and slowly kills performance. That’s why we only use panels with proven lamination strength and double-tested sealing.

4. Hot Spots – Small Areas, Big Problems

When cells are mismatched or soldered poorly, certain parts of the panel start heating up excessively. These “hot spots” reduce efficiency and can even lead to thermal damage or fire risk if ignored.

Renowatt’s panels are made with precision-matched cells and top-grade interconnections that ensure uniform current flow — avoiding heat buildup and maintaining performance even in tough conditions.

5. Snail Trails, EVA Bubbles, and Voids – The Early Signs of Decay

If you’ve ever seen panels with greyish lines (snail trails) or tiny air bubbles inside, that’s the result of poor encapsulation and chemical reactions under humidity and stress. These imperfections may look cosmetic but lead to long-term efficiency losses and corrosion.

Our Grade A PV modules undergo strict encapsulation testing to prevent these issues — ensuring clean aesthetics and reliable energy production year after year.

6. Glass Breakage and Edge Chipping – The Immediate Failures

Even minor cracks or chips on the panel edges can cause insulation failure, water ingress, and eventual electrical breakdown. Many low-cost panels are not properly tempered or packed during transit, making them prone to damage before they’re even installed.

Why Renowatt Chooses Only Grade A PV Panels

At Renowatt, we’ve seen these issues play out in the field — and we’ve made one clear promise: we will never compromise on panel quality. That’s why all our kits come withGrade A PV modules from certified, top-tier manufacturers.

Grade A panels eliminate the risk of all the above defects — ensuring your system delivers consistent power, higher generation, and long-term durability. They’re built to perform, even under tough weather conditions, and maintain their output for decades.

On the other hand, Grade B panels — often used in low-cost installations — might look the same at first glance, but they come with hidden issues: micro cracks, poor soldering, uneven coatings, and lower-quality cells. These silently eat into your generation, resulting in 5–10% lower output every year and a shorter life.

A Trustful Partnership, Not Just a Transaction

We believe in sitting next to you, not across the table. When you choose Renowatt, we’ll walk you through every part of your solar kit — what’s inside, what makes it premium, and why it matters. You’ll know exactly where every rupee is going.

That’s what Quick Solar is all about — simple, honest, transparent solar for every Indian home.

You can explore our ready-to-install solar kits here: Explore Quick Solar Kits →

Renowatt — Because quality solar means peace of mind, not just power.