How much power do solar panels provide?

Nearly 30% told us that their solar panels provided between a quarter and a half of the total electricity they needed over a year. There's a huge seasonal variation in how much of your power solar panels can provide. Read our buying advice for solar panels to see how much of your power solar panels could generate in summer.

Will solar panels generate enough electricity year-round?

Whether they'll generate enough electricity for your home year-round will depend on: if your solar panel system works in a power cut. It may be more realistic to think about whether you can be self-sufficient for the brighter parts of the year, and then top up your energy use from the grid at other times.

How long do solar panels last?

Since photovoltaics are adversely affected by shade, any shadow can significantly reduce the power output of a solar panel. The performance of a solar panel will vary, but in most cases, guaranteed power output life expectancy is between 10 years and 25 years. Solar panel power output is measured in watts.

How much energy do solar panels produce a year?

A few owners in our survey with smaller systems between 2.1kWp and 2.5kWp said that their panels generated as much as 2,700kWh over a year. However, some owners with systems twice the capacity reported that they produced the same amount.

Why should you use a solar power monitoring system?

A good solar power monitoring system should alert you to the best time of day to operate energy-intensive appliances like your washing machine to help you use more of the solar power generation from your panels rather than drawing electricity from the grid.

When is the best time to produce solar energy?

Solar energy is produced when the sun is shining – and between 11am and 3pm is generally the best time for solar panels to generate electricity and produce solar power. After around 3pm, your solar PV system's production will slowly drop off until it stops when your solar panels stop receiving sunlight.