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PART L Problem or opportunity?. Bill Wright Corporate Energy and Environment Manager, John Lewis plc. John Lewis and Waitrose. 27 Department Stores 179 Supermarkets – and growing 3 Factories Farm Leisure Facilities – including a castle!. ENERGY COSTS. - PowerPoint PPT Presentation
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PART L Problem or opportunity?
Bill Wright
Corporate Energy and Environment Manager,
John Lewis plc
John Lewis and Waitrose
• 27 Department Stores
• 179 Supermarkets – and growing
• 3 Factories
• Farm
• Leisure Facilities – including a castle!
ENERGY COSTS
Combined energy bill of over £35M!
OUCH!!!!!!
COST OF ENERGY
• Over the past three years 100% cost increase
• Straight off bottom line
• Now a major overhead
CARING FOR OUR ENVIRONMENT
D
CARING FOR OUR ENVIRONMENT
D
1kwh electricity = 0.43kg CO21kwh gas = 0.19kg CO2
CARING FOR OUR ENVIRONMENT
D
1kwh electricity = 0.43kg CO21kwh gas = 0.19kg CO2
JL Oxford St produces OVER 4000 tons of CO2 each year
And JL Victoria produces OVER 3000 tons
OUR AIMS
• Build efficiently
OUR AIMS
• Build efficiently
• Reduce operating costs
OUR AIMS
• Reduce consumption
• Reduce costs
•Reduce emissions
DOCUMENT L2A
• Applies to new build
• Reduce CO2 emissions
• Improve building performance
• Provide final user information
SERVICES DESIGN
• Design for energy efficiency
• Be aware of new regulations
• Install meters to enable 90% of energy usage to be monitored.
• If over 1000m2 use automatic meter reading
Lighting
• Use efficient lighting sources
HF ballasts, T5, CDMT spotlights etc
• Zone and time controls essential
• Assess lighting level required
• Use natural daylight where possible
• Switch off lights when not required - PIR
ELECTRIC MOTORS
• Use efficient motors
• Use variable speed drives – WHERE PRACTICABLE
• Size motor correctly
• ECA list?
BUILDING MANAGEMENT SYSTEMS
• Can control all building functions.
• Keep it simple!
• They are not the answer to everything!
INFORMATION
• Estimate power consumption.
• Provide customer with good records.
• Energy Log Book?
PART L2B
• Applies to existing buildings and extensions.
• Does not apply if work only involves replacement equipment, or a few additional lights to existing circuits.
CONSEQUENTIAL IMPROVEMENTS!
• Applies to building work associated with an existing building over 1000m2 in area.
• Improvements to original building of 10% of cost of additional work.
• Compliance can be upgrading existing services and / or controls.
• Upgrade lighting if necessary.
RENEWABLE ENERGY
• Requires renewable energy sources to be considered.
• Some local authorities now require a minimum 10% renewable energy sources on site for planning approval.
• Difficult to achieve economically
RENEWABLE ENERGY SOURCES
• Wind power
• Photo-voltaic
• Solar Thermal
• Ground Source heat pumps
• CHP ( Combined heating and power)
• Biomass boilers
ECONOMICS
• None of renewable sources are truly economic
• Assess sources for customer
CONCLUSION
• Gain knowledge of Building Regulations requirements
• Design accordingly
• Be pragmatic
• Commission thoroughly all installations
• Provide all necessary information.
• It is not that difficult!
