Types of Solar Panels
UK homeowners can choose between monocrystalline, polycrystalline, or thin-film panels. Monocrystalline offers higher efficiency, ideal for smaller roofs. Polycrystalline is cost-effective for larger arrays, and thin-film is lightweight, suitable for unusual roof structures.
Performance varies with roof orientation, tilt, and shading, so a site survey is essential.
System Design and Roof Considerations
Panels are typically installed on pitched or flat roofs. South-facing pitched roofs produce the most energy, while flat roofs may require adjustable mounts. Terrace houses, semi-detached, and detached homes differ in available roof space and shading. Installers assess roof strength, orientation, and potential obstacles before recommending the array size.
Installation Process
Installation involves site survey, system design, mounting, electrical connection to the household board, and commissioning. Inverters convert DC from the panels to AC for home use, and monitoring systems track performance. Safety disconnects and circuit protection are included to meet UK regulations.
Integration with Battery Storage
Connecting panels to a battery allows storage of excess daytime energy for evening use. This maximises self-consumption and reduces grid dependency. Battery size is chosen based on household load profiles and panel output.
Costs, Incentives, and Payback
Installation costs vary depending on roof size, panel type, and system capacity. Typical UK installations range from 2–6 kWp, with payback periods of 7–12 years. The Smart Export Guarantee (SEG) allows households to earn from exported surplus electricity. Maintenance is minimal, with panels typically lasting 25–30 years.
Monitoring and Maintenance
Smart monitoring apps provide real-time performance data, enabling homeowners to track energy generation and savings. Panels are mostly maintenance-free; occasional cleaning and inspection ensure long-term performance.