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ENERGY EFFICIENCY IN THE BUILDING
SECTOR
Powerhouse -
Partnerships for a greener future
Brussel, 15th of June 2016
- A partnership between the municipality and the private sector in Bærum.
- The goal is to reduce energy use and greenhouse gas emissions through joint projects and co-operation.
- The solutions must be attractive in a way that makes citizens want touse them.
Vision- Profitable interaction for a greener future
SmartTransportSmartEnergySmartGovernance
Some projects
Carpooling
Cyclingchallenge
Hamang-
Smart ParkingBig Data
CarsharingEV’s
City BikesFornebu
Smart Traveling
Powerhouse Hydrogen
6
Dag Christer Øverland
Property Developer
Side 7
This is Entra ASA -Norway
• Leading property company in Norway
engaged in developing, letting and operating
attractive and environmentally sustainable
buildings
• 1.2 million square metres divided between
110 buildings. 90% office properties
40%
Buildings account for 40% of the
world`s energy consumption
It is not sufficient to focus on new construction
and refurbishment alone:
Side 9
Percentage
newbuildings
1,5%
Percentage
refurbishment
1,5 %
Entra`s environmental working:
• 1. Daily reduction of energy in all buildings
• 2. Total refurbishment of the oldest buildings
• 3. New green buildings
Side 10
Side 11
1. Daily reduction of energy in Entra`s
existing buildings
• Switching to LED light bulbs
• Upgrading central processing system (SD-
anlegg)
• New heat recovers (Varmegjenvinnere)
• Reduction of operating time:
- ventilation
- light
- heating
- cooling
Average reduction of 82 kilowatts pr.m2 gives 82 million kw/m2 in total each year.
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2. Total refurbishment of the oldest buildings
Urban Mountain, Oslo
Technical data:
Area: 77,000 m2
Energy consumption: 60
kWh / m2 / year
Former energy: 258 kWh /
m2 / year
Sustainability:
Passivehouse
FutureBuilt
BREEAM NOR -
Outstanding
Energy Class A
Cradle2Cradle
OsloSolar
Technical data:
Area: 55000 m2
Energy consumption:
-5,8 kWh / m2 / year
Former energy:
Sustainability:
Plus house
FutureBuilt
BREEAM NOR -Outstanding
Energy Class A
Cradle2Cradle (C2C)
3. New green buildings
8500 m2 Photovoltaics (PV) to the south
Form follows enviroment:
We shape the building so it can produce as much energy as
possible.
COMMUNICATION
500bicycle parking
10charging
stations for electric vehicles
0parking spaces
for conventional
cars
Future Buildings
VISION OSLOSOLAR:
The world's most environmentally friendly urban building - that's gives
back to the environment and to the city's population.
Powerhouse -
Partnerships for a greener future
Peter BernhardSenior Consultant - Energy and Environment
Asplan Viak AS, Norway
Brussel, 15. June 2016
INTERDISCIPLINARY ARCHITECTURE AND CONSULTING COMPANY
Appr. 900 persons with expertise in:
• Architecture
• City and Area Planning
• Building and Construction
• Energy and Environment
• Geographic Information Systems and IT
Visualisation
• Landscape Architecture
• Communication and Transport Engineering
• Social Analysis and Evaluation
• Community Planning
• Technical Infrastructure
• Water Supply and Environmental Engineering
The Powerhouse collaboration
«Nobody can develop a Powerhouse plus energy building alone
– but together with our partners we can do it.».
Process and Methodology
New collaboration models with emphasis on interdisciplinary
collaboration – Integrated Design Process
Cooperation between all disciplines from day one
It has been essential for the team to work towards a clear
defined goal
Broad communication of the energy and environmental goals
Ambitious leadership
Dare to take risks and try new solutions
Definition of a Powerhouse
24
A Powerhouse is a building that during it’s lifecycle produces more
renewable energy than it consumes for production of building
materials, construction, operation and demolition of the building.
Additional criterias:
• The quality of produced energy should not be lower than bought energy
• Minimum passivehouse level (NS 3701)
• Appliances (PC, printers etc.) not included in the energy balance
• Embodied energy over the buildings lifecycle to be calculated in primary energy
• Shall be built within commercial market conditions
Powerhouse Kjørbo
Two office buildings
Originally built: early 1980’s
Area: 5,180 m2 total
Project start: January 2012
Completed: April 2014
Objectives
Keep the expression of the building
Renovate to an energy positive building
(energy use for appliances not included in the
energy budget)
Build within commercial market conditions
BREEAM-NOR «Outstanding» – the highest of
the five levels of this environmental
classification system
before …
….after
before …
…and afterExample:
Activity Based Workspace (ABW)
…and after
Energy concept
Consequent reduction of energy demand
Exposed concrete in ceiling for heat
storage
Energy wells supply heat and free cooling.
Recycling of heat from server room.
Two heat pumps operating at different
temperatures.
Local production of electricity
Energy performance
Energy label A
Building code 2010
Energy label C
Before renovation
- average
Norwegian office
building
Minimize embodied energy - Materials
The buildings’ structural systems remained
Materials such as old glass façades have been reused
All new materials were carefully chosen to ensure that the
materials had low embodied energy.
Energy dash board – Solar production and
energy consumption
1. Jan - 11. June 2016
Hydrogen fuel station - PV-powered
Powerhouse Brattørkaia, Trondheim
New office building
13.000 m2
Appr. 500 workplaces
More information about Powerhouse Kjørbo
Brochure in English can be downloaded from
Video in English:
https://www.youtube.com/embed/JGYu1lp5tu
0
http://www.powerhouse.no/en/prosjekter/kjorbo
/
«Powerhouse Kjørbo is most likely the most
energy efficient renovated building in the
world»
Mats Mysen, senior researcher at SINTEF Building and
Infrastructure Source: Fremtidens Byggenæring - 13
Thank you for your attention!
!
Asplan Viak AS
www.asplanviak.no
+47-4040762