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Installing energy efficiency measures in 81 properties in a North Wales village


  • Range of retrofitting measures, including external and cavity wall insulation, loft insulation, and new boilers
  • Construction of 3.6km-long connection to main gas network, bringing gas to the village for the first time
  • Employment of local suppliers, through a ’meet the buyers’ event to engage with local SMEs

Arbed is an energy performance investment programme, where Willmott Dixon Energy Services works with the Welsh Government to improve energy efficiency of homes across Wales.

This project involved installing a range of energy measures to 81 properties in Nantlle, a small village on the edge of the Snowdonia National Park, over a 22 week period in 2013.

We contacted each householder in the village about Arbed, and surveyed interested properties, making work recommendations and explaining the cost involved and the likely energy savings.

Energy efficiency measures

The scope of the works included:

  • New central heating systems
  • Boiler replacements
  • New ventilation systems
  • External wall insulation
  • Cavity wall insulation
  • Loft insulation
  • Draught proofing

Energy costs in the village were high as it was not connected to the mains gas supply and had relied on fuel oil. We worked with the regional gas network to extend the gas main by 3.6km. This slashed the cost of energy bills directly, and they were further reduced thanks to the energy efficiency measures.

Community engagement

Residents were able to remain in their properties during the works and we ensured minimal disruption to them and their families.

The community centre is a Grade 2-listed building and we installed a new gas central heating system as part of the work.

We employed local suppliers, and held a ’meet the buyers’ event to engage and encourage local SMEs.

We took on two apprentice plumbers and offered work experience placements.