SunPower Solar Panels

About SunPower Solar Panels

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Last updated: 01 April 2019

Features and Efficiency of SunPower Solar Panels

SunPower claims an efficiency of over 20% for their solar panels. This is the best performing solar solution currently in the industry. SunPower panels integrate SunPower® Maxeon® solar cells technology. That includes an anti-reflective coating for increased sunlight absorption.Their system employs a silicone all-back-contact solar cell invented at Stanford University. Often associated with high-quality and reliability, the panels from Suntech can generate up to 50 percent more power per unit area.

Read more: Buyer’s Guide to Solar Panels

Models Available in The UK

The E20 series are ideal for small size roofs; these panels deliver high performance even in low light and high temperature conditions. Below is a comparison of 2 of the most popular models of SunPower panels:

Monocrystalline PV E20-327 panel E20-245 panel
Efficiency 20.4% 20.1%
Solar cells 96 monocrystalline 72 monocrystalline
Lenght 156 cm 156 cm
Width 105 cm 79.8 cm
Depth 4.5 cm 4.6 cm
Weight 18.6 kg 15 kg
Maximum Power output 327W 245W
Power Voltage 54.7 V 40.5 V
Power Current 5.98 A 6.05 A
Impact resistance 25mm diameter hail 25mm diameter hail
Temperature resistance -40°C to 85°C -40°C to 85°C
Material solid copper foundation, silicone contact solar cell solid copper foundation, silicone contact solar cell
Price contact us to receive a free, no obligation quote contact us to receive a free, no obligation quote
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All SunPower panels come with a 25 years warranty. The warranty provides both power and product coverage. This is the most extended warranty available on the market for solar panels.

Additionally, the company guarantees the power output of the solar PV Modules to be at least 95% in the first 5 years. For the following 20 years, the power output may decline by no more than 0.4% per year. At the end of the final year of the 25 years warranty period, the output will be at least 87% of the Minimum Peak Power rating.

The warranty certificate is assuring the customers that the panels are reliable.


The price of panels varies according to your roof size, required electricity and the area where you are located. In order to get a price quotation that matches your needs, simply fill the form on the left and our specialist suppliers will provide you with up to 4 quotes. Our service is free of charge.


Good durability solar panels topped with 25 years warranty. Beautifully designed, the SunPower solar panels are currently the most sold solar solution worldwide. The obvious reason behind that is the impressive efficiency this panel delivers: 20.4 %.This, however, comes with an increased price tag when compared to other solar panels on the market.