2. 25%
Cars, boats, trains and
airplanes account for
approx 25% of the world’s
energy consumption
3. 40%
Today, buildings account
for 40% of the world’s
energy consumption
100%
In 2050 energy consumption
in buildings will be equal to
the total energy usage in the
world today – if we don’t do
anything
4. The founders: ZERO, environmental organization
Skanska, developers Entra, property developers
Snøhetta, architects Hydro, aluminium company
5. Powerhouse is a collaborative alliance on energy-positive buildings
We want to change how we cooperate in the building industry
All key competence in a project should be available from the beginning
6. An energy-positive building is a building which during its operational phase
generates more energy than what was used for the production of building
materials, its construction, operation and disposal
Illustrasjon: SNØHETTA / MIR
7. Form follows environment
A result of cross-functional cooperation through the entire value chain
Illustrasjon: SNØHETTA / MIR
8. Trondheim, Norway
• Climatic challenging due to
energy consumption used for
heating
• Climatic challenging due to
solar energy production
• Lots of wind...
• Broad access to sea water
9. Pri 1: Collaborating with the best in each field
Pri 2: Maximum reduction of energy demand
Pri 2: Produce energy on site
Pri 4: Motivated tenantry
10. • Energy-efficient volume
• Superisolated building structure
• Demand control on all technical facilities
• Hybrid ventilation with low energy consumption to
fans
• Good daylight ratio = minimize energy for lighting
• Heat pump for energy efficient heating of the
building
The pointofdeparture is thattoday,cars, boats, trains and airplanesaccount for approx 25% oftheworld’senergyconsumption
we want to get out of what popularily is called the 40% sector, the property sector is responsible for 40% of the energy consumption.In 2050 energyconsumption in buildingswill be equal to the total energyusage in theworldtoday – ifwedon’t do anythingThis is for sure not sustainable.
The Alliance consistsof: Skanska, Snøhetta, Hydro, ZERO and Entra Eiendom. Partners across the value chain of the sector. An agreementoncooperationwassigned April last year. As members of the Powerhouse alliance, we believe that energy-positive buildings are the buildings of the future
We want to demonstrate that it is possible to build energy-positive buildings not only in warm climates, but also in colder climates such as that in Norway. This includes both new constructions and rehabilitation. Together, wewant to develop and realizeofficebuildings as energy positivebuildings. The Powerhouse projects must be commersially profitable
Optimum Form Ball is the most energyefficient
Optimum orientationSun and daytimelight
Energy need is caluculated to extremelylow 21 kwh/m2 per annum
Calculated energy production from roof and parts of the facades is 49 kwh/m2/yearIt means that we have an energy surplus of 28Built-in energy in the construction is about 20 and that means we still go in plus based on the original definition