
Measured data from renewable generation is not yet available.
| Pre-development | Forecast | Measured | |
| Electricity use | - | - | - |
|---|---|---|---|
| Natural gas use | - | - | - |
| Oil use | - | - | - |
| LPG use | - | - | - |
| Wood use | - | - | - |
| Other Fuel | - | - | - |
| Pre-development | Forecast | Measured | |
| Primary energy requirement | - | - | - |
|---|---|---|---|
| Annual CO₂ emissions | - | - | - |
| Annual space heat demand | - | 18 kWh/m².yr | - |
| Electricity generation | Forecast | Measured |
|---|---|---|
| Renewables Technology | - | - |
| Other Renewables Tech | - | - |
| Electricity consumed by generation | - | - |
| Primary energy requirement offset by renewable generation | - | - |
| Annual CO₂ emissions offset by renewable generation | - | - |
| Whole house energy calculation method | PHPP |
|---|---|
| Other whole house calculation method | - |
| Energy target | EnerPHit |
| Other energy targets | - |
| Forecast heating load | 11 W/m² demand |
| Date | Result | |
| Pre-development air permeability test | - | - |
|---|---|---|
| Final air permeability test | - | 0.3m³/m².hr @ 50 Pascals |
| Stage | Occupied |
|---|---|
| Start date | 08 January 2018 |
| Occupation date | 27 July 2018 |
| Location | Sheffield South Yorkshire England |
| Build type | Refurbishment |
| Building sector | Private Residential |
| Property type | Detached |
| Construction type | Masonry Cavity |
| Other construction type | Externally insulated and timber clad |
| Party wall construction | |
| Floor area | 158 m² |
| Floor area calculation method | Treated Floor Area (PHPP) |
| Building certification | Passivhaus certified building |
| Organisation | Bilton Design Ltd |
|---|---|
| Project lead person | Bilton Design Ltd |
| Landlord or Client | |
| Architect | Bilton Design Ltd |
| Mechanical & electrical consultant | |
| Energy consultant | Bilton Design Ltd |
| Structural engineer | Peak Engineers |
| Quantity surveyor | Bilton Design Ltd |
| Consultant | Mead Consultings |
| Contractor | Various |
| Planned occupancy | Four people, all out to work or school on weekdays. |
|---|---|
| Space heating strategy | Heater battery on vent system supply, towel radiators to bathrooms and WC, radiator in hallway and dining room |
| Water heating strategy | Combi boiler |
| Fuel strategy | Mains Gas. Mains electricity. |
| Renewable energy strategy | Solar PV - 4kW array, excess to grid |
| Passive Solar strategy | Windows to north reduced in size slightly, deeper reveals to south |
| Space cooling strategy | Opening windows |
| Daylighting strategy | |
| Ventilation strategy | Mech heat recovery ventilation |
| Airtightness strategy | Air tight roof deck, wet plaster to walls internally, joints treated with air tight paint or tapes |
| Strategy for minimising thermal bridges | External insulation taken below DPC, Thermal bridge analysis undertaken |
| Modelling strategy | PHPP using the PH sketch up plugin |
| Insulation strategy | External wall insulation to achieve 0.1W/mKRoof externally insulated to achieve 0.1W/mKRaft foundation - insulated floating floor installed over approx. 0.3W/mK |
| Other relevant retrofit strategies | Short scale stepped retrofit |
| Contextual information | Living accommodation had a south easterly aspect, ground floor ceiling heigth allowed for raising floor level and incorporating insulation |
| Occupancy | 4 |
|---|---|
| Space heating | Gas condensing boiler |
| Hot water | Gas condensing boiler |
| Ventilation | Passivhaus certified MHRV unit |
| Controls | Boost button |
| Cooking | Gas hob, electric ovens |
| Lighting | LED |
| Appliances | |
| Renewable energy generation system | 14 panel solar PV, 4kV max output |
| Strategy for minimising thermal bridges |
| Storeys | 2 |
|---|---|
| Volume | - |
| Thermal fabric area | - |
| Roof description | |
| Roof U-value | - |
| Walls description | |
| Walls U-value | - |
| Party walls description | |
| Party walls U-value | - |
| Floor description | |
| Floor U-value | - |
| Glazed doors description | |
| Glazed doors U-value | - - |
| Opaque doors description | |
| Opaque doors U-value | - - |
| Windows description | |
| Windows U-value | - - |
| Windows energy transmittance (G-value) | - |
| Windows light transmittance | - |
| Rooflights description | |
| Rooflights light transmittance | - |
| Rooflights U-value | - |