This large carbon-neutral residence was constructed in Green Belt on a moorland site, north of Bolton, Lancashire.

The house is designed to exacting standards in order to achieve a carbon negative footprint, as well as addressing the requirements of National Policy Planning Framework (NPPF) regarding ‘design of exceptional quality or innovation, enhancing its immediate settings and sensitive to the defining characteristic of the local area’.

A detailed pre-planning Energy Assessment dictated not only technology required to address the buildings energy demands but also the form of the architecture.

The house utilises location and orientation to control solar gain and adopts a fabric first approach to sustainability. A combination of high insulation levels, air-tightness and the effective incorporation of a photovoltaic system makes this dwelling super efficient.

Taking an integrated ‘whole-building’ design approach, EDGE ensured that the maximum use of energy efficient measures were built into the design at the very start, in order to achieve :

  • planning permission for a carbon negative build requiring exceptional design,
  • new build located within Greenbelt,
  • high insulation levels and air-tightness,
  • utilisation of air source heat pump and photovoltiac cells technology,
  • installation of low energy appliances,
  • introduction of a biomass boiler and
  • reduced water consumption.

Environmental Specification for Planning

  • Water Consumption: Design water consumption less than 125 litres per person per day.

  • Design Air Test Value: Design permeability 2. m³/hm².

  • Floor: U-value floor 0.1 W/m²K 13.

  • Walls: U-value walls 0.11 W/m²K.

  • Roof: U-value roof 0.11 W/m²K – to be calculated in detail.

  • Windows: Windows WER ‘A‘ Transmittance 0.41 U-value 1.4 W/m²K.

  • Heating Systems: Mitsubishi Ecodan GSHP (or similar) to be positioned in the adjacent field to provide underfloor heating and hot water.

  • Photovoltaic: To reduce the reliance on mains electrical connection a solar photovoltaic array will be located adjacent to the house.

  • Battery Storage: Tesla Powerwall 2 (or similar) will provide storage of on-site generated electricity through the photovoltaic array.

  • Lighting: 100% low energy fittings.

  • Thermal Bridging: Accredited Construction Details were followed.

  • Water Treatment: Klargester BA BioDisc sewage treatment plant using rotating biological contactor (or similar) to produce wastewater qualities of better than 15mg/l BOD*, 25mg/l SS and 3.8mg/l ammonia.