A SPECIALIST and security glass manufacturer is making windows that convert light into power.

The Romag Group, on the Leadgate Industrial Estate, Consett, has signed a deal with BP Solar to produce glass window panels that include photovoltaic cells that generate electricity from light.

Buildings using solar power need special panels on the roof that are often unsightly. But the new design means that the power is generated as light passes through the windows.

The Romag Group, which employs 130 people, plans to float on the Stock Exchange next Thursday and will use the proceeds to invest in a new production line for the panels.

BP, the second largest producer of solar cells, has been working on the idea with Romag for the past six years.

Romag is also talking to Marley about making roof tiles that incorporate photovoltaic cells.

"The idea is that photovoltaic glass will provide enough electricity to run an office,'' said a company spokesman. "The system can pass any unused electricity back to the grid.''

The glass panels are more expensive that conventional ones but the Government plans to offer grants to organisations installing the new product.

The Government says it wants to increase the amount of renewable energy produced and used in Britain.

The grants will initially be offered for large public buildings.

Energy Minister Stephen Timms toured the Romag factory before visiting Newcastle University's Devonshire Building, which is partially powered by solar panels in the roof.