The 104-year-old former Army garrison building in Pembroke Dock that's home to the Pembrokeshire Coast National Park Authority has just received its first energy assessment.

The authority's headquarters, Llanion Park, was given a category 'C' rating of 59 for energy efficiency, where A is most efficient and G is least efficient. This rating is excellent for a building of this age and type - a typical rating would be a D or E.

Government legislation means public buildings larger than 1,000sqm now have to be assessed for their energy use and must display an Energy Performance Certificate. Llanion Park was audited by Haverfordwest-based Bullock Consulting.

Andrew Muskett, the authority's building projects officer, said: "We try to use energy-efficient methods wherever possible to run our buildings.

"When we moved to Llanion Park from Haverfordwest in 2004 and refurbished the building, we installed a range of energy measures. These included a wood-fuelled boiler for heating and a comprehensive automatic lighting system. The building is also insulated to a high specification. It's because of these measures that Llanion has performed so well in this energy assessment."