Domestic energy assessors
could see energy saving measures in action in a castle, following a decision by the National Trust to cut the carbon footprint at one of its properties.

A wood pellet boiler, 1,000 square feet of insulation and solar panels are among the measures that will be installed at Chirk Castle in Wales.

The project, part of the National Trust's programme to cut carbon emissions at its properties by 20 per cent, is being advised by the Carbon Trust.

Simply changing from burning heating oil to sustainable wood pellet boiler is expected to cut emissions at the 13th century fortress near Wrexham by 60 per cent, while cutting the heating bill in half.

Keith Jones, environmental practice manager for the National Trust, said: "Money wasn't our main motivation for this initiative but it is definitely a positive outcome!"

According to various experts, improving the energy efficiency of existing buildings should be a priority in combating climate change.