Case Study
40 Holborn Viaduct
We walked into a pitch-black room, where the building manager said, 'This is how we run meetings now to save energy!' Although fun and lighthearted, the 40 HV team doesn't mess around when it comes to occupier engagement. Through small actions and minor reprogramming, the building achieved major energy savings and became the first-ever winner of the CUBE award
March 2022 - February 2023
Location: London
1 year achievements
1st Place
Winner
38.84%
Energy savings
1,664,711 kWh
total savings
£ 529,316
savings
Building characteristics
16,467 m2
total area
2008
Construction completed
1 person per 10m2
Occupational density
Trend BMS System
Building systems
8 parking spaces
Parking
5 passenger lifts & 1 goods lift Lifts
BREEAM/New Construction (Excellent), Renewable Energy Commitment Certificate, EPCS from D to C
Certification
Top actions
Management and behaviour
-
Conducted regular and quarterly CUBE meetings combined with green committee of building
-
Circulated newsletters to tenants to create awareness and discuss ideas
Minor technical and re-programming
-
Installed LED lights and PIR (passive infrared) sensors
-
Turned down the gas boiler flow temperature from 80C to 60C to save energy
-
Optimised chillers and boilers by using programmable thermostats which switch off boilers when outside temperature is 15C and chillers stop running when outside temperature drops to -2C
-
Reduced corridor lighting to 10% and installing motion sensors at garage area to turn off lights
Installed CO2 sensor on each floor that maintain ventilation system which also reduce the running time of fan coils
-
Used night purging technique in summers that reduce overheating by bringing fresh cool outdoor air at night
-
Limited water purging only to the weekends to reduce the use of water pumps
-
Insulated pipes on roof with aluminium casing which reflects sunlight and prevents heat from being absorbed
-
Have used software tools in the past: demand logic and verso to optimise building performance
Don't just take it from us
What BNP Paribas says
“Great to have seen the level of engagements from diverse building stakeholders - from contractors to landlord and building managers to occupiers. It's this level of deep, continuous and diverse collaboration that's needed to reach net-zero and other shared sustainability goals. "
-Joshua Spencer, BNP Paribas RE