Case Study Profile
Corporate Headquarters

Corporate Headquarters

Sector: Technology

Customer Profile

  • The UK Headquarters of a technology company with global coverage, employing 1,100 people at a prime 1980s office campus in the Thames Valley
  • Footprint of 8,300m2 / 98,340 sq.ft.
  • 800kW peak electrical capacity – mostly servicing heating, ventilation, and air conditioning (HVAC) load
  • Existing Building Management Systems and Controls in place, upgraded in 2009

Demand Side Response Strategy

  • Reduce Variable Speed Drives (VSD) speed controller set point from 45 Hz to 25 Hz on Supply and Extract Fans for four Air Handling Units (AHUs)
  • Reduce VSD pump speed controller set point from 45 Hz to 25 Hz for chilled water pumps, constant temperature pumps and compensation pumps
  • Increase temperature set point by 2°C on two 115 kW multi-stage, air-cooled compressors on Building One’s chiller
  • Increase temperature set point by 2°C on two 160 kW multi-stage, air-cooled compressors on Building Two’s chiller
  • Lake water system pump and return water feature pump to be maintained at 40%

800 kW

Peak electrical capacity

8,300 m2

Building footprint

1,100

Building users

9am – 5pm

Working hours

Outcomes

240 kW

Load shed

134,000 kg

CO2 reduction over 5 years

£75,000

Financial benefit over 5 years

No negative impact on comfort conditions of occupants.
No capital outlay for the building society.
Additional cost savings from plant optimisation.