Show & Share - Marks & Spencer, Cheshire Oak Store, 17th July
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Munish Datta Head of Property Plan A @MunishDatta
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Transcript of Show & Share - Marks & Spencer, Cheshire Oak Store, 17th July
Our 2012/13 Year
Waste
Construction
waste
Operational
waste
Waste to energy
Recycled content
Make Plan A HWDB
Sustainable Learning
Stores
Climate Change
Adaptation
Biodiversity
Continuous Evaluation
Carbon management
Whole life costing
BREEAM
Climate
change
Energy
efficiency
Green energy
Renewables
Refrigerant gas
Health & wellbeing
Construction
Health & Safety
Materials
Sustainable Wood
Water
No animal testing
Future of Plan A
Community
Climate change resilience
Technology
Dr Rosi Fieldson
Head of Environment
Simons Group Ltd
Cheshire Oaks
The Contractors
Perspective
Development Timeline
Aug 2008
Lehman
bankruptcy
& RBS bail out
Jun 2008
Planning
Submitted
Apr 2009
Resolution
to grant
Dec 2010
Extreme
weather
conditions
Oct 2010
Sod cutting
May 2011
Topping out
Apr 2009
Cheshire
West &
Chester
formed
Jun 2009
Call in
enquiry
Oct 2009
Secretary
Of State
approval
Oct 2011
Fit out
Start
on site Jan 2005
Church
Commission
Trust deal
Nov 2007
Development
Agreement with
parties concluded
Oct 2004
Philip
Hodgkinson
meets CC/CEO
Jul 2012
Shell PC
Summer
2012
Store
opens
The Learning Store Challenge
Efficiency
Resilience
Re
ve
nu
e
Tru
st
Climate Change Resilience
Solar shading to
Windows reduces
over heating
Undercover parking
protects customers
from sun and rain
Reflective roof
surface reduces heat
gain
Enhanced storm
water swale capacity
Trees provide shade
and wind break
Permeable parking
surfaces slows storm
water run off
Enhanced planting
improves micro-
climate and air quality
Rainwater harvesting
used for WC flushing
Thermal mass in
walls and earth bunds
and Hemcrete walls
Overview of POE Tasks
• 1 year’s worth performance monitoring
• Assess building envelope
• Benchmark against other M&S stores
• Assess the sustainable features
• Survey staff & customers
• Review biodiversity
• Disseminate the good practice lessons
Questions the POE aims to answer
• Which features work, and which do not?
• Is the extra effort worth the investment?
• Are operational costs reduced?
• Do the store’s features attract more customers &
generate more sales?
• What are the key lessons for future developments?
Building Performance – Electricity
Trade lighting 16%
Stock lighting 13%
Other lighting 11%
External Lighting 2% Refrigeration
21%
HVAC 8%
Mechanical handling 2%
Catering 14%
IT / Communications 1%
General power 2%
Miscellaneous 10%
42% elect load =
lighting
HVAC only accounts
for 8% of site
demand - half as
much as typically
seen in retail
Electricity performance against
benchmarks
0
50
100
150
200
250
Electricity Lighting Refrigeration Mech Ser Catering IT HVAC
kW
h/m
²
White City Cheshire Oaks Design Estimates
Cheshire Oaks
17% lower than design estimate
35% lower than White City
0
10
20
30
40
50
60
70
80
90
100
3500
5500
7500
9500
11500
13500
15500
Weekly
Degre
e D
ays
Weekly
Gas
Consu
mpti
on (
kW
h)
Gas consumption and degree days
Gas Consumption Degree Days
Gas Consumption Good tracking of gas
consumption with
degree days
Gas consumption
baseline 5,000 kWh
per week
Biomass boiler consumption
0
100
200
300
400
500
600
700
December January February March
Provided back of house
heating for four months
Good tracking of gas
consumption with
degree days
Fuel deliveries every
3 – 4 weeks
Water Use – Daily Profile
0
1
2
3
4
5
6
7
6 Nov to 21 Nov
1 Mar to 16 Mar
Significant reduction in water consumption
due to the rainwater harvesting
Building Fabric Performance
High levels of insulation
Only £180/y savings
identified
Building fabric performance
The building losses less than 1°C over night when
external temperatures less than 0°C
21.30°C
20.65°C
23:00 07:00
Biodiversity findings
All Development stage targets in the bio-diversity action plan met, including:
• No loss of amphibian breeding, foraging and shelter habitat.
• Retain and protect hedgerows where practicable
• Contribution to local black poplar target
• No net loss of black poplars on site
Good management process established for Operational targets.
• Some tension between pest control and biodiversity.
• Site requires specialised maintenance to deal with green wall and swale
Customer feedback – First stage
• A customer survey undertaken at Cheshire Oaks &
Warrington
• Customers asked their view on sustainable features
• Was the store found to be any more appealing?
• Did the design of the store affect their decision to
visit?
Some key findings from the spring survey
The vast majority like the layout, calling it
“spacious” and enjoying the “wide aisles”.
People also particularly like the “airy” and
“spacious” feel.
96% of people found the temperature in store to be
just right throughout.
40% of people knew about rainwater harvesting – and
referred to it directly as a ‘Sustainable feature’.
Some key findings from the spring survey
(continued)
40% of people had noticed the biodiversity and
landscaping outside – the Green Wall, Swale, or
Wildlife Meadow.
84% of people thought there was good daylight in
Cheshire Oaks – the majority of those who did not,
wanted more
87% of customers found the artificial lighting to be
good.
Lessons learnt from Cheshire Oak
Key factors that contribute to the successful
operation of the building:
• Clear vision for the building expressed through
Plan A and the Sustainable Construction Manual.
• Detailed hand-over process with clear operation
and maintenance manuals.
• Post occupancy workshops which bring together
designers, contractors and facilities staff to
examine the building’s performance in use.
Lessons learnt (continued)
The fundamental principles of energy efficient
building design have been well adhered to
• Good insulation
• High levels of air tightness
• Limited thermal bridging
• Maximise natural light
• Reduce solar gains
• Simple HVAC systems with easy controls
