How Much Electricity Can I Generate with Solar Panels?

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Most solar panels are either made of polycrystalline or monocrystalline silicon

Switching to solar power can cut your energy bills by up to 50%

Fill in the form above to receive free solar panel quotes from local installers


The Smart Export Guarantee (SEG) launched on 1st January 2020 to replace the old Feed-in Tariff. Check out our guide to the SEG here to find out how much you could earn.

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Renewable energy and the environment

In a society that is growing increasingly concerned with their impact on the environment, the popularity of solar energy is booming.

Solar panels can provide a source of electricity by absorbing natural sunlight, slashing your energy bills, shrinking your carbon footprint, and bringing in an income via the Smart Export Guarantee.

Interested in getting solar panels for your home? Find out how much they’ll cost you by entering your details into this short form, and our professional suppliers will be in touch with their most competitive prices.

solar panels on a red roof

Types of solar panels and installation

The three main types of solar panel for residential installations are monocrystalline, polycrystalline, and amorphous.

Monocrystalline solar panels consist of grids made up of silicon cells. They are the most efficient type of solar panel, and would therefore be recommendable to a property with little room for installation.

Polycrystalline solar panels are similar to monocrystalline in their composition, however the growth of the silicon crystals is less controlled and output is less efficient.

Amorphous solar panels are the most recently developed, and they differ completely in design to their predecessors. Silicon is scattered over a thin, flexible layer, which can mould to fit the contours of a roof.

The cost of installing solar panel technology on a property can be quite high, and there are other measures that can be taken if your desire is to reduce energy bills; insulation and double glazing can reduce the energy lost through walls, windows and roofing and are generally less costly options.

How much electricity can I generate with solar panels?

There are a number of factors that can affect how much electricity you will generate from any solar panels installed.

Some of these are controllable, such as the size, number and position of panels on the home; however, others are less predictable, like the number of hours of daylight (which can depend upon time of year and weather).

Determining the amount of electricity that you may generate on your property must be done on a case by case basis, and it will largely depend on the kind of panel you have and its rating.

The standard solar panel has an input rate of around 1000 Watts per square meter, and the majority of solar panels available have around 15-20%. Therefore, if your solar panel was 1 square meter in size, then it would likely only produce around 150-200W in good sunlight.

To calculate how much power you can expect your own solar PV system to produce, take a look at our detailed guide.

Impact on your energy bills

Although having solar panels installed is still expensive, once they are on your roof you can start generating an income from the Smart Export Guarantee (SEG). This scheme ensures that all large energy providers pay households for all the renewable electricity they export back to the grid.

Of course, you will also make savings by being able to power your home with the free energy produced by the solar panels.

To find out how much it will cost you to make the switch to solar, pop your details in this short form, and our suppliers will be in touch.

Amy Catlow Publishing Director

As the self-proclaimed ‘Queen of Green’ Amy has been an environmental evangelist for as long as she can remember. Whether it’s crunching the data or helping visualise it, Amy has the nous to help you turn your home into an money saving eco-fortress.