Solar panels are already offered by a number of specialist manufacturers and suppliers, but are often expensive.

Customers visiting a participating Currys branch will be offered an in-store consultation followed by a free home assessment to check that their property is suitable.

The retailer says the panels will help "future proof" homes against rising fuel prices.

Customers can apply for grants to help offset the cost of a system.

Applications for government grants under the Low Carbon Buildings scheme are assessed using criteria laid down by the Department of Trade and Industry. Most householders will have to achieve energy efficiency standards before they are eligible.

The Energy Saving Trust, which administers government grants, calculates that a system for an average-sized house would cost between £8,000 and £18,000, and yield annual savings between £75 and £125.

Some electricity supply companies will buy back any excess electricity generated by the panels.

Although sales of solar panels are increasing in Britain, they remain far behind some other countries including Germany.