Staffan Bolminger
Environmental manager
Älvstranden Utveckling AB
Development company owned by the city of Gothenburg
Implement Vision Älvstaden – River City Gothenburg
• Inclusive
• Dynamic
• Green
• Exchange experiences nationally and internationally
• Ambitious environmental and energy strategy
2
Gothenburg in 1973
Eriksberg 1989
Eriksberg 1992
5
Eriksberg last week
Kvillebäcken
Hamnhuset
CO2 emissions from 2000 dwellings in
Kvillebäcken
1. Swedish standard
(90kWh/m2, year)
2. Kvillebäcken today
(60kWh/m2, year)
3. Kvillebäcken
tomorrow
Step by step towards
energy efficient housing
2004 Parkhuset, 109 kWh/m2, year
2006 Höghuset, 99 kWh/m2, year
2008 Hamnhuset, 59 kWh/m2, year
Four conditions
1. Good climate shell
•
Minimize energy losses!
2. Ventilation with recovery
•
Recycle energy!
3. Sun collectors
•
Use renewable energy!
4. Moisture safe
•
Always important – especially when
you building energy efficient!
10
Most important - better profit!
Prognoskostnad (kr/kvm, år ett)
Hyresintäkt
eller -bortfall
1 300,00
1 250,00
Energikostnad
1 200,00
1 150,00
Löpande drift
och underhåll
1 100,00
1 050,00
Kostnad av
reinvestering
och utbyte
1 000,00
950,00
900,00
Kapitalkostna
d av
investering
850,00
800,00
Normhus F-syst
Höghus F-syst
Higher investment
gives us higher
interest –
but energy costs
decreases even more!
Higher investment
gives us better profit!
Hamnhuset FTX
This is the first year and no prediction –
we know energy prices and interest costs
60tons lower carbon dioxide
emissions/year
g CO2/kvm, år (fjärrvärme och miljömärkt el)
70% lower CO2
emissions
compared to
Swedish standard!
8 000,0
7 000,0
6 000,0
5 000,0
4 000,0
3 000,0
2 000,0
1 000,0
0,0
Normhus F-syst
Höghus F-syst
Hamnhuset FTX
And higher CO2
emissions due to
more materials and
more transports are
”repaid” in three
years!
CO2 emissions from 2000 dwellings in
Kvillebäcken
1. Swedish standard
(90kWh/m2, year)
2. Kvillebäcken today
(60kWh/m2, year)
3. Kvillebäcken
tomorrow
Including cars… And a Worst Case
Scenario
1. Swedish standard
(90kWh/m2, year)
2. Kvillebäcken today
(60kWh/m2, year)
3. Kvillebäcken
tomorrow
4. Worst Case
Scenario
Thank you!
Staffan Bolminger
031-779 96 35
staffan.bolminger@alvstranden.goteborg.s
e
@SBolminger