A 4kW solar PV system is a popular choice for homeowners in the UK, including those in Stratford-upon-Avon. It can provide a significant amount of electricity for a household, reducing reliance on the grid and lowering energy bills.
But how much energy can you expect a 4kW solar PV system to produce per year in the UK?
On average, a 4kW solar panel system in the UK can generate an estimated annual output of around 3,800 kWh. This is based on a rough kK value of 950 kWh/kWp per year. The solar radiation factor (kk) is essentially the amount of sun your roof receives, which depends on the location of your home and the angle and pitch of your roof. However, it’s important to note that the amount of electricity generated by a solar PV system can vary depending on factors such as location, weather conditions, and the orientation of the solar panels.
One major factor that will impact solar PV generation is the season. Solar panel output reduces during the winter in the UK – generally by about 50%. This is because the days are shorter in the winter months, meaning panels aren’t exposed to as much sunlight as they are in the summer. The sun is also lower in the sky during the winter, which can impact sunlight exposure.
How much energy does the average house use in the UK?
According to Ofgem, the average British household uses 2,900 kWh of electricity. So will a 4kW system totally eradicate your electricity bill? Unfortunately, the answer is probably not. This is because of the reduced generation during winter time (and usually higher usage due to lights being on longer). However with a battery system, you should see next to zero bills from April - September. The added benefit of installing a battery system with your PV system is the ability to charge the battery using low rate night tariffs and use the cheaper energy throughout the day.
If you’re considering installing a solar PV system in Stratford-upon-Avon or elsewhere in the UK, it’s important to choose a reputable solar panel installer. There are many solar PV companies that offer installation services, so it’s worth doing some research to find one that has a good reputation and offers high-quality products and services.
We'd love to discuss your energy reduction project with you. Call our experts for no-obligation advice on 01789 267 591.
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