1. Photo © Karl Heinz Raach

2. Freiburg
Plusenergiehaus
Talk by Ahmet Bektas
Photo © Karl Heinz Raach

3. Outline

4. Outline Freiburg: visionary city

5. Outline Freiburg: visionary city
Vauban: visionary redevelopment

6. Outline Freiburg: visionary city
Vauban: visionary redevelopment
Rolf Disch & the plusenergiehaus:
visionary architecture

7. Freiburg
Germany

8. FREIBURG HOBART
Population 217,000 209,000
Latitude 48° N 42.5° S
Solar Irradiation 1,120 1,300
kWh/m2 per year

9. Winter Photos © Karl Heinz Raach

10. Summer Photos © Karl Heinz Raach

11. Solar facade at
central railway
station building
© Ahmet Bektas

12. © Ahmet Bektas
Secure parking for thousands of bikes

13. © Ahmet Bektas Solar heating and PV on hotels

14. © Ahmet Bektas City Council: a new vision

15. Solar Region Plan 1986
1 Save Energy
2 Cogenerate
3 Solar everywhere

16. How?

17. How?
Employment
Community engagement
Finance and marketing
Building and housing
R&D, Education, Tourism

19. Vauban
New Housing Redevelopment

20. © Ahmet Bektas

21. © Ahmet Bektas

22. © Ahmet Bektas

23. © Ahmet Bektas

24. World Solar
Energy Society
Headquarters
© Ahmet Bektas

25. © Ahmet Bektas Community Centre

27. “ He who takes an
active part in the
solution is no
longer a part of the
problem.
”
Rolf Disch
Architects

28. © Ahmet Bektas

32. Heliotrope © Ahmet Bektas

33. © Ahmet Bektas

35. Heliotrope =

36. Heliotrope =
follow the sun

37. Heliotrope =
follow the sun

38. Heliotrope =
follow the sun
High insulation

39. Heliotrope =
follow the sun
High insulation
Solar sail tracks sun

40. Heliotrope =
follow the sun
High insulation
Solar sail tracks sun
Solar water & air heating

42. Energy produced =
5 X E consumed

43. The ‘Sunship’ development

44. 1 Sonnenschiff
The ‘Sunship’ development

45. 1 Sonnenschiff 2 Solarsiedling
The ‘Sunship’ development

46. © Ahmet Bektas Sonnnenschiff

48. Solarsiedling and the plusenergie haus

49. Solarsiedling and the plusenergie haus
A community of homes
Each home a power station
Adjoins Sonnenchiff

50. Maximise local timbers
Minimise VCOs & other chemicals

51. © Ahmet Bektas

52. The solar panels are the roof © Ahmet Bektas

53. © Ahmet Bektas

54. Fresh air through heat exchangers © Ahmet Bektas

55. Price around €440,000 for three-storey unit.
Or, about the same as a traditional house. © Ahmet Bektas

56. © Ahmet Bektas

57. Details Plusenergiehaus

59. Energy generated
Energy consumed

60. Energy generated
Energy consumed
KfW 60 Haus

61. Energy generated
Energy consumed
KfW 40 Haus
KfW 60 Haus

62. Energy generated
Energy consumed
Passiv Haus
KfW 40 Haus
KfW 60 Haus

63. Plusenergie haus
Energy generated
Energy consumed
Passiv Haus
KfW 40 Haus
KfW 60 Haus

64. The Powerbox

65. The Powerbox: home core function centre

66. Assembly. Morning

67. Assembly: afternoon

68. Assembly in reality at Solarsiedlung.

69. Assembly in reality at Solarsiedlung.

75. “ Architecture
for a future worth
”
living.