If you’re considering investing in solar panels in the South East, one of the most common questions we get asked at SolarTherm UK is: how much electricity can I realistically expect my system to produce?
Understanding the output of a solar PV system is key to estimating your long term savings, reducing your dependency on the grid and planning battery storage options.
Solar PV System Output: What to Expect
A typical domestic solar PV system in the UK ranges from 3kW to 6kW in size. The amount of electricity the system produces depends on several factors including roof orientation, roof pitch and shading. This is a general idea of what to expect:
System Size:
- 3kW system: generally produces around 2,400-2,600 kWh per year.
- 4kW system: generally produces around 3,200-3,400 kWh per year.
- 5kW system: generally produces around 4,000-4,200 kWh per year.
- 6kW system: generally produces around 4,800-5,000 kWh per year.
These figures are averages and not exact examples, your performance estimates will provide figures based on your property, usage and system design. At SolarTherm UK we’re proud to be Gold Members of EPVS (Energy Performance Validation Scheme) who check every quote we provide for accuracy.
Why the South East is Ideal for Solar Electricity
The South East receives more solar irradiance than most of the UK. This means more sunlight reaches your solar panels throughout the year, increasing electricity production. Homeowners across the South East often see better than average performance from their solar PV systems, especially in the peak summer months.
Seasonal Variability: What You Should Know
Solar panel output fluctuates with the seasons. Summer months bring long days, stronger sunlight and result in peak electricity production. The winter months, while you panels still generate electricity efficiently, it’s at a lower output level, often 25-30% of summer months. The shorter days, lower sun and more frequent heavy cloud cover can reduce the output of your panels, but they are still working hard generating electricity.
Battery Storage: Capturing More of Your Solar Electricity
One of the most effective ways to maximise the value of your solar electricity is by pairing your solar PV system with battery storage. Battery storage allows you to store surplus electricity generated throughout the day for use in the evenings or on low generation days, further reducing the amount of electricity you need to buy from the grid.
Real Savings and Environmental Benefits
Generating your own electricity with solar panels reduces your electricity bills significantly, up to 80% in some cases. Solar panels reduce your reliance on fossil fuel produced grid electricity, lowering your carbon footprint.
In the South East, solar generation is strong and many homeowners find the return on investment for solar PV and battery storage a compelling argument for installation.
Is a Solar PV System Right for You?
If you are paying more than £70 a month for electricity, want greater energy independence and to take back control of your energy future, then a solar PV system will most likely deliver measurable financial and environmental benefits.
At SolarTherm UK we specialise in tailored solar PV systems for properties across the South East. Contact us today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.
Your home. Your energy. Your future.





