Why Isn’t Your Solar Panel Giving Full Output? [Common Causes + Easy Fixes]
If you’ve noticed that your solar panels aren’t producing as much energy as they used to, you're not alone. Many homeowners and businesses with solar systems experience dips in performance—but the good news is that most issues are fixable without needing a full replacement.
This guide is for solar panel owners—especially those relying on their system for significant electricity savings—who are asking:
- Why has my solar output dropped suddenly?
- How do I troubleshoot low solar panel performance?
- When should I call for professional solar service?
Top Reasons Your Solar Panels Are Underperforming (And How to Fix Them)
1. Dirt, Dust, and Debris on Panels
Common Symptom: Gradual decrease in energy production even during sunny days.
Why It Happens: Layers of dust, leaves, bird droppings, or pollution block sunlight from reaching the photovoltaic cells. This is especially common after storms or in high-pollution areas.
How to Fix It:
- Clean your panels with water and a soft cloth (avoid harsh detergents).
- For MYSUN customers: Our Solarshield 360 (Only for Delhi-NCR) Plan gives you hassle free system care. including scheduled professional cleaning using panel-safe methods.
2. Shading From Trees or Nearby Structures
Common Symptom: System output varies significantly throughout the day or is unexpectedly low despite clear weather.
Why It Happens: Even partial shading on one panel can reduce the performance of the entire array due to how panels are connected.
How to Fix It:
- Observe shadow patterns on your rooftop throughout the day.
- Trim nearby trees or adjust the panel layout.
- MYSUN offers site re-assessments to help customers identify and resolve shading issues over time.
3. Physical Damage or Panel Degradation
Common Symptom: Sudden drop in performance or visible cracks/discoloration.
Why It Happens: Damage from hail, storms, or debris can cause micro-cracks. Over time, UV exposure and moisture may lead to delamination or wear.
How to Fix It:
- Perform a visual check for cracks, burn marks, or clouded glass.
- Report any signs of damage to MYSUN. Our certified technicians handle assessments, replacements, and warranty claims.
4. Inverter Malfunction
Common Symptom: System not generating electricity even when the sun is out.
Why It Happens: The inverter is responsible for converting solar DC power into usable AC. If it's faulty, the system may appear functional but won’t produce electricity.
How to Fix It:
- Check for red or orange indicator lights on the inverter.
- Use the Monitoring App to identify inverter faults in real time.
- Our Solarshield 360 teams respond quickly with inverter diagnostics and repairs.
5. Wiring or Connection Issues
Common Symptom: Fluctuating output or power loss with no visible damage.
Why It Happens: Corrosion, loose connections, or rodent damage to wiring can interrupt power flow.
How to Fix It:
- Don’t attempt DIY fixes—these are electrical issues.
- MYSUN’s maintenance plans include regular electrical inspections to detect and correct wiring problems safely.
6. Hidden Manufacturing Defects
Common Symptom: Persistent low performance in a new system or panel-specific faults.
Why It Happens: Occasionally, a faulty panel or batch can underperform due to internal defects.
How to Fix It:
- MYSUN installs only Tier-1 quality panels with long-term manufacturer warranties.
- If a defect is suspected, we handle warranty claims and replacements on your behalf as part of our 25-year performance support.
Step-by-Step Troubleshooting Checklist
Before calling in the experts, try the following:
- Visual Inspection – Look for dirt, cracks, or anything unusual on the panels and inverter.
- Check Monitoring App – Track energy output trends. A dip on a sunny day is a red flag.
- Review Shading Changes – Has a tree grown? A new building nearby?
- Log Any Error Codes – Note inverter lights or display warnings.
- Call a Pro – If the issue isn’t obvious, reach out to MYSUN for diagnostics.
Stay Ahead With MYSUN Support
MYSUN doesn’t just install solar—we power your peace of mind:
- Solarshield 360 – From basic cleaning to advanced 24x7 monitoring.
- Proactive System Health Reports – Available under our Platinum Plan.
- Smart Monitoring Tools – Track and optimize performance anytime via mobile.
Ready to Restore Full Solar Performance?
Don’t let minor issues cost you energy and savings. Whether it’s cleaning, repairs, or inverter replacement, MYSUN’s expert service team is just a call or click away.
Visit: www.itsmysun.com or call: +91 84483 80218 us to schedule a solar panel health checkup today.
MYSUN – Rediscover the Power of the Sun.
Book your Solar System for just 6,999 and build your personalized payment plan with Flexi-payTM. 
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