Sustainability in the built environment Promoting energy efficient buildings and minimising their harm on our environment Improving economic efficiency, while protecting and rest
Trang 1“Sustainability – Without the Stars”
Trang 2“Sustainability Without The Stars”
New Zealand Rocky Mountain Institute
Trang 3What does that mean?
Abandon rating
schemes….
…or collectivist action
Trang 4Sustainability - the “jargoniest”
word of 2010 - Advertising Age
Even ahead of
monetize, choiceful,
and the new normal
A good concept gone
bad by misuse - and -
overuse
Trang 5Sustainability in the built environment
Promoting energy efficient
buildings and minimising their
harm on our environment
Improving economic efficiency,
while protecting and restoring
ecological systems, and
enhancing the well-being of
people in general
“Doing well by doing good”
Trang 6The Big, Big Picture
Buildings account for 40%of primary energy
in developed countries … and rising
The International Energy Agency (IEA)
estimates that current trends in energy
demand for buildings will stimulate half of energy supply investments to 2030
The World Business Council for Sustainable Development identified buildings as one of the five main users of energy where
“megatrends” are needed to transform
energy efficiency
Trang 72011 Top trends in the US
US Earth Advantage Institute:
Energy labelling for homes and office buildings
More accurate energy rating systems for homes and office spaces
Buildings information modelling software
Advances in building modelling for energy and embedded energy
Buy-in to green buildings by the financial community, new load products
Carbon calculations to document, measure, and reduce greenhouse gas creation
Net zero buildings which generates more energy than they use
On-site renewable energy sources such as wind, solar or geo-exchange systems
Trang 8Messages from your
European colleagues
Reducing energy consumption and
eliminating wastage are among the main
goals of the European Union
The Energy Performance of Buildings
Directive imposes energy performance
certificates (EPCs) for all buildings in
Europe.
“EPCs won’t realise their full potential until
valuers actually factor them into their
valuations and the grade it gives the building”
Roger Messenger Chairman of TEGoVA –
The European Group of Valuers’
Associations January 2010
'Sustainability is no longer a buzzword: it
is now an everyday part of property
decision making'
Jo Stocks: Chief Executive - Watts Group UK
Trang 9Where Goest
Australia ……
Very active in reducing Greenhouse Emissions
in buildings which account for 25-30% of GHG
2010 - stringent energy efficiency requirements
in building code.
Gillard Government working on tax breaks for energy efficient buildings
Mandatory disclose of energy efficiency in
buildings – Commercial Buildings Disclosure
Trang 10Commercial Buildings Disclosure
National programme to improve the energy
efficiency of Australia’s large office buildings
Since November sellers or lessors of office space
(2,000 sq m +) required to provide an up-to-date
energy efficiency rating
Building Energy Efficiency Certificate must include:
1. NABERS Energy star rating [*]
2. an assessment of tenancy lighting and
3. general energy efficiency guidance
Repeat - This is mandatory
[*] National Australian Built Environment Rating
System Performance-based rating system for
existing buildings Actual versus design
Energy – water- waste-indoor environment
Given the increasing linkages between our two
economies – not to mentioned our professed desire to catch up with Australia - is it reasonable
to assume similar policies will be heading across the
Tasman?
Trang 11But wait there’s more
Sets a minimum ongoing operational building energy performance
standards measured by NABERS
[*] A series of provisions that encourage/require the parties to reduce the environmental impact of the premises
Encourages sustainable practices by landlord and the tenant and remove
disincentives End result;
(a) a comfortable, productive and healthy indoor environment
(b) reduced energy use and reduced production of Greenhouse Gases
(c) reduced use of potable water and the use of recycled water where appropriate
(d) effective diversion of construction, demolition, and land-clearing waste from landfill and incineration disposal, and recycling of tenant waste streams;
Trang 12Market transformation is under way
Property investment analyst IPD in Australia has launched its green property index
Measures investment returns for buildings which have environmental performance ratings
Focus on investment rather than operational considerations
Benchmark: compares environmentally-rated buildings again non-rated buildings
IPD presentation to the Green Cities Conference, February 2011
Evidence Green Star and NABERS-rated buildings outperform non-rated buildings on
a financial basis by a significant margin, especially at the upper end of ratings
Trang 13Meanwhile, in our own back yard
NZ lagging behind
Work of Professor Sandy Bond-Lincoln Un.
Cessation of ‘Govt3’
Trang 14It’s the (New Zealand)
economy stupid!
“Our” experience in our shared patch:
Commercial property sector in recession - tenants in the driving seat
Vacancy rates rising, rent income is reducing
Property valuations being written down, tightened banks lending
Big pressure on cost reduction – replacing Govt3 in Government
Increasing energy costs, increasing energy consumption
Restricted capital expenditure even for essential work
Upgrades focussed on retaining/attract new tenants
Funding for upgrade work to reduces energy consumption is scarce
Proactive management of tenants by facilities management
companies 1 year before lease renewal
Tenants starting to make property decisions based on sustainability, energy use and internal environment
The squeeze is on – more office workers per square metre
Trang 15What we know that
you may not
Outstanding opportunities to reduce energy use in buildings
Many tenants and property owners lack knowledge about energy efficiency and effective running of plant in commercial buildings
Funding available from EECA not always understood
Energy use “easily” reduced by 10-15% by tuning existing controls
Savings with a payback of less than 3 years can reduce energy
Trang 16Bounded rationality, Cognitive
dissonance, Pareto optimality
“I haven’t got the time to understand everything I need to know about how to save energy
“I’ve got lots of other pressing tasks and don’t have the resources to deliver the optimal solutions
“I might make things better off for others but not
necessarily for myself, or vice versa Split incentives.
“There is a risk of being too ambitious which could
backfire, so I’ll opt for a satisfactory solution rather than the optimal one [Satisficing]
If I bring in someone else and they find major savings I could be criticized for not finding them myself
Satisficing a handy blended word combining satisfy with suffice a
strategy that seeks to meet criteria for adequacy.
Trang 17But it can all come together
Reserve Bank :
Starting from 30% below Energy Use Index
benchmark
Total building energy use reduced 22%
Comfort conditions = to best ever recorded
Cooling Energy (central plant) reduced 54%
Gas energy (whole-building) reduced 35%
HVAC Auxiliary energy reduced 11%
Electric energy (whole-building) reduced 6%
Carbon emissions reduced 13%
But Wait - there’s more: Project to deliver as
many savings again under way
Energy Management is a process not an
event, and sometimes a counter-intuitive one
at that
Trang 18Measuring sustainability in
commercial buildings
Green Star in New Zealand
NZ Green Building Council
established in July 2005
61 Green Star rated
buildings in NZ - new buildings
50 for office buildings, 5 for
education facilities, 5 for
“fit-outs, 1 industrial site
Eight separate environmental
impact categories
Assessment Criteria
Trang 19Design versus Reality
May not be as green as they seem
One third may not reach their potential
Certification based on design
Issues being addressed
Trang 20Measuring sustainability in
commercial buildings
NABERS coming to New Zealand
Announced but details awaited
Initiated by EECA, delivered by NZGBC
Adapted for NZ conditions
Name not yet known
A Voluntary scheme in New Zealand
National Australian Built Environment Rating System based rating system for existing buildings Actual performance versus design Energy – water- waste-indoor environment, GHG
Trang 21Performance-Emissions Trading
Scheme
New Zealand will be running an Emissions
Trading Scheme (ETS)
Puts a price on greenhouse gases; incentive to reduce emissions and encourage tree planting
It will increase the cost of energy
‘Cheap’ gas reservoirs depleting
Currently, NZ electricity costs are low in
comparison to rest of the world…
Trang 22New Zealand Building Stock
Trang 23Property Institute-
Professional Pathways
Trang 24Adding Energy Efficiency into the
Knowledge Area Core Property
Knowledge Field Property Management
Title Provide clients with advice on property
economics
Purpose Are able to identify economic factors
affecting property; provide advice on external factors influencing property.
Understand the value to property owners of investing in energy efficiency and the
resulting increase in their return on investment
Trang 25Thank you Questions –Comments-Discussion
Trang 26Split Incentives
Landlord aim is to maximise return on investment:
minimise landlord expenses
where possible, pass costs to tenants
Tenant goal to maximise staff comfort, satisfaction,
minimise OPEX, rent and energy consumption
Landlord typically passes on all energy and maintenance costs to tenant
No landlord incentive to install higher quality or energy efficient plant
Trang 27The ECO Conundrum
15 - 5 - 500 - 5000
• In a typical commercial building, the base build energy costs can be around $15/m2
• Savings of 33% or $5/m2 are typically achievable
• Depending on the building use and location, tenants could be paying $500/m2 in rent and $5,000/m2 in staff costs
Q: Even though saving energy is cost effective … why take the risk of alienating tenants/employees?
A: Because the non-energy benefits are greater.