Installing photovoltaic (PV) panels is one of the smartest long-term investments a UK homeowner can make.
A well-planned installation and simple maintenance routine ensure your solar system runs efficiently for 25 + years.
This guide walks you through the installation process, maintenance best practices, and what to expect from your certified installer.
💡 At Renewables UK, we design, install, and maintain solar systems across the United Kingdom — all by MCS-certified professionals.
🔹 Step-by-Step Solar Installation Process
🧭 1. Site Survey & System Design
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Roof inspection: angle, orientation, shading analysis
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Electrical assessment for inverter placement
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Custom system design to match your energy needs
⚙️ 2. Mounting the Framework
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Aluminium rails fixed securely to roof rafters
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Panels angled at 30 – 40° (optimal for UK latitude)
🔌 3. Installing the Photovoltaic Panels
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Panels clamped to the frame in series or parallel
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Cables connected to the inverter via DC isolators
⚡ 4. Inverter & Meter Setup
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String or hybrid inverter mounted indoors or in a loft
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Connection to your consumer unit with AC isolator
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Generation meter tracks output
🧾 5. Testing & Commissioning
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Full electrical safety inspection
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Certification under MCS and Building Regulations Part P
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System registration for Smart Export Guarantee (SEG)
🔗 Learn about How Photovoltaic Panels Work.
🔹 Installation Timescale & Costs
| System Size | Typical Install Time | Approx. Cost (2025) |
|---|---|---|
| 3 kW | 1–2 days | £5 000–£6 000 |
| 4 kW | 2–3 days | £6 000–£7 000 |
| 6 kW | 3 days + | £8 000–£9 500 |
💷 View real-time pricing on our Solar Cost Calculator.
🔹 Maintenance Requirements
Solar systems need minimal upkeep, but regular checks preserve performance and warranty.
🧽 Cleaning
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Clean panels twice yearly using soft brush or water-fed pole
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Avoid harsh chemicals or pressure washers
🔍 Inspection
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Annual check for loose cables, debris, or shading
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Confirm inverter display is functioning correctly
⚡ Performance Monitoring
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Compare app data with expected kWh output
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Report sudden drops to your installer
🪫 Battery Storage Maintenance
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Keep batteries within recommended temperature (10–30 °C)
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Ensure ventilation and firmware updates
🔗 Discover Types & Efficiency of Solar Panels.
🔹 Troubleshooting Common Issues
| Issue | Possible Cause | Solution |
|---|---|---|
| Drop in output | Dirt, shading, faulty string | Clean / contact installer |
| Inverter error code | Grid fault or communication issue | Reset / technician check |
| Bird nesting under panels | Gaps between roof & panels | Add bird-proof mesh |
| Moisture under panels | Damaged seals | Replace affected module |
🔹 Warranty & Lifespan
Most PV systems include:
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Panel warranty: 25–30 years performance guarantee
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Inverter warranty: 5–10 years (extendable)
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Workmanship warranty: up to 10 years via RECC or NICEIC
Panels degrade slowly (~0.5 % per year), ensuring decades of clean energy.
🔹 Compliance & Safety
All installations in the UK must follow:
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MCS Standards: quality assurance for products & installers
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IET Wiring Regulations (BS 7671)
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Planning and Building Regulations for structural integrity
🧾 We handle all certifications and notifications on your behalf.
🔹 Aftercare & Support
Our support includes:
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Annual maintenance plans
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Remote performance monitoring
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Rapid-response repair service
👉 Book a Maintenance Visit
👉 Get Your Free Solar Installation Quote
🔹 Why Choose Renewables UK
✅ Nationwide coverage
✅ MCS-certified engineers
✅ Decades of solar expertise
✅ Transparent pricing, no sales pressure
“Your trusted UK solar partner — from installation to lifetime performance.”