Solar panels

The cost varies depending on your installer, the type of panels you want and how many you buy.  Battery storage will be a further cost. The Energy Saving Trust say that the average domestic solar PV system is 3.5kWp and costs around £6,100.
Source: Energy Saving Trust 2026

A photovoltaic (PV) solar panel installation only requires planning permission for listed buildings or areas of outstanding natural beauty.
Source: E.ON, N.D

Solar photovoltaic (PV) systems require very little ongoing maintenance.

Panels installed at a tilt of 15 degrees or more are usually kept clean by rainfall, helping them continue to perform efficiently. In some locations, such as areas with high levels of dust or debris, occasional cleaning may be needed.

Solar panels are typically designed to last 25 years or more. Some parts may need replacing sooner. For example, the inverter, which converts the electricity generated and feeds it back into the grid, usually needs replacing after around 12 years. The cost of replacement varies depending on the system size and manufacturer.

Before you go ahead, it’s a good idea to speak to your installer about the maintenance requirements for your specific system.

Source: Energy Saving Trust 2026.

There are two types photovoltaic (PV) solar panels:

Grid-connected

Which ensure you are never without electricity, keeping you connected to the grid should you need more energy than your panels can generate, while also exporting back to the grid when you have extra energy.

Stand-alone

These systems are not connected to the grid and make up for any potential shortfall by charging a solar battery system, and storing the electricity generated to be used later.

These systems are less common, used mostly in areas that cannot be connected to the grid and as a result of the solar batteries required, tend to be more expensive.​

If you meet the criteria, you could benefit from the Energy Company Obligation (ECO) scheme. It's designed to help households deemed to be in fuel poverty. Visit the Ofgem website to learn more.

Solar panels could increase value of your house by 4 - 14%,according to Yopa. However, keep in mind that there's a significant upfront installation cost and you may not recover all of it before you sell your home. 
Source: Yopa 2025