Innovate Green OfficeEngineering the future –The UK’s greenest office?

Doug King Principal, King Shaw Associates

Consulting Engineers

Completed: 2002

Size: 22,000 ft²

BREEAM: None

Cost: £64/ft²

Innovate Office, Sherwood Park

Innovate Green Office

Completed: 2007

Size: 46,000 ft²

BREEAM: Excellent 87.55%

Cost: £135/ft²

Innovate Green Office

Passive designSuper insulationThermal massTermodeckHeat recoveryNight coolingMixed mode ventilationCHP tri-generationVacuum drainageRainwater WC flushingDaylight designHigh efficiency lightingLighting control

Ambitions

A Step Change:

To prototype a commercial sustainable office

To create a pleasant working environment

To meet investment criteria for institutional funding

To significantly reduce life cycle/operating costs

To significantly reduce waste during construction

To maximise the use of recycled and recyclable products

Optimised Plan

Typical Building CO2 Emissions

Lighting17%

Electrical Equipment

13%

Cooking6%

Water Heating7%

Air Conditioning

13%

Space Heating44%

0.15 W/m²k

1.5 W/m²k 0.15 W/m²k

1.62 W/m²k

0.15 W/m²k

0.15 W/m²k

Insulation

Thermal Mass

Typical Building CO2 Emissions

Lighting29%

Electrical Equipment

22%

Cooking10%

Water Heating10%Air

Conditioning13%

Space Heating12%

Daylight

Orientation and Shading

Orientation and Shading

daylight availability – office hours, 4.5% df

Office Daylight Availability

Resource Conservation

Resource Conservation

Energy Conservation

Energy Conservation

Energy Conservation

Energy Conservation

Energy Conservation

Water Conservation

Carbon Index Benchmarks

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

Typical Good Practice Typical Good Practice Innovate GreenOffice

Typical Good Practice Typical Good Practice

Prestige Airconditioned Normal Airconditioned Natural Ventilation Cellular Natural Ventilation Open Plan

ECON19 Category

CI

kg/m

2

Lighting

Humidification

Fans & Pumps

Absorption Refrigeration

Electric Refrigeration

Heating & Hot Water

Carbon Index

80% lower CO2 emission than a conventional office

80% lower mains water consumption than a conventional office

75% lower sewage discharge than a conventional office

80% reduction in construction waste sent to landfill

Results

Typical energy cost for a developer specification office building in 2002 = £1.42 / square foot

Actual energy cost for Innovate Office, Sherwood Park in 2002 = £1.40 / square foot

Typical energy cost for a developer specification office building in 2007 = £2.24 / square foot

Predicted energy cost for Innovate Green Office in 2007 = £0.65 / square foot

Return on Investment