How Much Would 12 Solar Panels Cost?

You may be able to receive payments for electricity that you export to the grid.

The Smart Export Guarantee allows eligible small-scale renewable generators to receive payments from participating suppliers for electricity they export. The tariff and amount received depend on the arrangement you choose and how much electricity you send to the grid.

This is another reason to think about battery storage carefully. Using more of your own solar electricity can reduce the amount you buy from the grid, while exporting surplus electricity can bring SEG payments.

Your actual household pattern matters here. A system that produces the same amount of electricity can work differently in two homes depending on when each household uses power.

How Long Does Installation Take?

A typical solar installation does not usually take weeks.

Energy Saving Trust says most rooftop installations take one or two days, although larger or more complicated projects may take longer.

The installation itself is only one part of the process. You may also need time for the initial assessment, quotation, system design and any required approvals or registration.

If you are planning other roof work, discuss the timing with the installer before booking the solar installation. This can help avoid unnecessary extra work or duplicated access costs.

Is 12 Solar Panels A Good Size?

For many homes, 12 panels can be a practical starting point. Energy Saving Trust uses around 12 panels for a typical 4.5kWp domestic system, which helps explain why this number is common.

But there is no advantage in choosing 12 panels simply because it is a common figure.