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examples:passivehosue_district:passive_house_district_heidelberg-bahnstadt_experience [2024/12/04 17:09] – jgrovesmithexamples:passivehosue_district:passive_house_district_heidelberg-bahnstadt_experience [2025/04/01 14:30] (current) – [See also] yaling.hsiao@passiv.de
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 In 1992, the city parliament of Heidelberg adopted the first municipal climate protection concept. It was worked out by the Institute for Energy and Environmental Research Heidelberg (ifeu) with intense participation of citizens and stakeholders. It analysed energy consumption and CO<sub>2</sub> emissions from households, industry, trade, crafts, public institutions (university, hospitals, administration) and the mobility sector. Strategies and measures were developed for all sectors. The key focus was the reduction of the heating energy demand, because 40% of CO<sub>2</sub> emissions from energy consumption in Heidelberg were caused by space heating. The City of Heidelberg committed itself to integrate energy efficiency and climate protection into all activities of the administration. Since 2010 all new municipal buildings meet the Passive House standard. Furthermore, energetic retrofit programmes, transformation strategies towards efficient and renewable energy supply as well as awareness raising programmes were introduced. The City of Heidelberg is committed to sustainable development goals and is engaged in numerous city networks on climate protection like Energy Cities, Climate Alliance, ICLEI, Compact of Mayors and C40. In 1992, the city parliament of Heidelberg adopted the first municipal climate protection concept. It was worked out by the Institute for Energy and Environmental Research Heidelberg (ifeu) with intense participation of citizens and stakeholders. It analysed energy consumption and CO<sub>2</sub> emissions from households, industry, trade, crafts, public institutions (university, hospitals, administration) and the mobility sector. Strategies and measures were developed for all sectors. The key focus was the reduction of the heating energy demand, because 40% of CO<sub>2</sub> emissions from energy consumption in Heidelberg were caused by space heating. The City of Heidelberg committed itself to integrate energy efficiency and climate protection into all activities of the administration. Since 2010 all new municipal buildings meet the Passive House standard. Furthermore, energetic retrofit programmes, transformation strategies towards efficient and renewable energy supply as well as awareness raising programmes were introduced. The City of Heidelberg is committed to sustainable development goals and is engaged in numerous city networks on climate protection like Energy Cities, Climate Alliance, ICLEI, Compact of Mayors and C40.
  
- [{{:picopen:fig1_aerial_view.png?600|Figure 1: Aerial view of Heidelberg-Bahnstadt, photo Kay Sommer}}]+ [{{ :picopen:fig1_aerial_view.png?600 |Figure 1: Aerial view of Heidelberg-Bahnstadt, photo Kay Sommer}}]
 ===== Heidelberg-Bahnstadt - a sustainable district on former railway ground ===== ===== Heidelberg-Bahnstadt - a sustainable district on former railway ground =====
  
 The freight and switch yard in Heidelberg was no longer needed when logistic concepts for freight transport changed and was therefore closed in 1997. In 2001, an urban planning competition for the master plan of a new city district on this area was announced, and the proposal from Trojan + Trojan, Darmstadt, won the first prize (Figure 2). The concept, which picked up on the geometric structure of the railway lines in designing streets and green spaces, served as the basis for the new urban district Heidelberg-Bahnstadt covering 116 hectares. In 2007, a dynamic development started when the Mayor of Heidelberg initiated the foundation of the Entwicklungsgesellschaft Heidelberg (EGH, Development Agency Heidelberg) in cooperation with the municipal savings bank (Sparkasse Heidelberg), the city’s own housing association (GGH) and the real estate subsidiary of the state bank of the federal state of Baden-Württemberg. EGH purchased the former railway plot from the real estate subsidiary of the German railway company Deutsche Bahn and became the development agency and contracting party of the city in the urban development contract for the Bahnstadt. The freight and switch yard in Heidelberg was no longer needed when logistic concepts for freight transport changed and was therefore closed in 1997. In 2001, an urban planning competition for the master plan of a new city district on this area was announced, and the proposal from Trojan + Trojan, Darmstadt, won the first prize (Figure 2). The concept, which picked up on the geometric structure of the railway lines in designing streets and green spaces, served as the basis for the new urban district Heidelberg-Bahnstadt covering 116 hectares. In 2007, a dynamic development started when the Mayor of Heidelberg initiated the foundation of the Entwicklungsgesellschaft Heidelberg (EGH, Development Agency Heidelberg) in cooperation with the municipal savings bank (Sparkasse Heidelberg), the city’s own housing association (GGH) and the real estate subsidiary of the state bank of the federal state of Baden-Württemberg. EGH purchased the former railway plot from the real estate subsidiary of the German railway company Deutsche Bahn and became the development agency and contracting party of the city in the urban development contract for the Bahnstadt.
  
-[{{:picopen:fig2_master_plan_heidelberg.png?600|Figure 2: Master plan of Heidelberg-Bahnstadt,\\+[{{ :picopen:fig2_master_plan_heidelberg.png?600 |Figure 2: Master plan of Heidelberg-Bahnstadt,\\
 map: City of Heidelberg, based on a draft from Trojan + Trojan}}] map: City of Heidelberg, based on a draft from Trojan + Trojan}}]
  
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 As a conversion area and because of its central location, the Bahnstadt is an excellent place for sustainable urban development. In accordance with the City of Heidelberg’s climate protection and sustainability goals, professional concepts for various environmental aspects were worked out. Because of its proximity to the central train station, the Bahnstadt offers good potential for the use of local and long-distance public transport. Two tram lines were realized connecting the Bahnstadt to the rest of the city, and bike paths on former freight train lines link the Bahnstadt to neighbouring districts without any intersections with car roads. Within the next years, two pedestrian and bike bridges will cross the railway lines and the river of Neckar, providing attractive connections besides car traffic. As a conversion area and because of its central location, the Bahnstadt is an excellent place for sustainable urban development. In accordance with the City of Heidelberg’s climate protection and sustainability goals, professional concepts for various environmental aspects were worked out. Because of its proximity to the central train station, the Bahnstadt offers good potential for the use of local and long-distance public transport. Two tram lines were realized connecting the Bahnstadt to the rest of the city, and bike paths on former freight train lines link the Bahnstadt to neighbouring districts without any intersections with car roads. Within the next years, two pedestrian and bike bridges will cross the railway lines and the river of Neckar, providing attractive connections besides car traffic.
  
-[{{:picopen:fig3_schwetzinger_terasse.png?600|Figure 3: Residential buildings and municipal kindergarten Schwetzinger Terrasse in Bahnstadt, photo Christian Buck}}]+[{{ :picopen:fig3_schwetzinger_terasse.png?600 |Figure 3: Residential buildings and municipal kindergarten Schwetzinger Terrasse in Bahnstadt, photo Christian Buck}}]
  
 Soil management minimised the amount of soil transfer. Green spaces and green roofs protect nature and improve the urban climate by means of evaporative cooling, and rainwater is retained so that the amount of rainwater that enters drainage systems is reduced. Soil management minimised the amount of soil transfer. Green spaces and green roofs protect nature and improve the urban climate by means of evaporative cooling, and rainwater is retained so that the amount of rainwater that enters drainage systems is reduced.
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 ===== Evaluation of energy consumption for space heating ===== ===== Evaluation of energy consumption for space heating =====
  
-The ciy of Heidelberg comissioned the Passive House Institute in Darmstadt with the evaluation of the district heat consumption for space heating in the residential buildings during the first stage of construction of the Bahnstadt. +The ciy of Heidelberg comissioned the Passive House Institute in Darmstadt with the evaluation of the district heat consumption for space heating in the residential buildings during the first stage of construction of the Bahnstadt. the monthly heat measurements of the municipal energy utility Stadtwerke Heidelberg for the building plots. All building plots, each comprising about 100 apartments, have one district heat transmission station with a heat meter.  Total district heat consumption was directly measured, including space heating, hot water for showers and kitchens, and standby losses of installations and heating lines. The pure heat consumption was calculated taking into account the summer consumption in those months without the speace heating demand. This analysis is described in detail in the publication monitoring energy consumption in the new district Bahnstadt in Heidelberg  [Peper, Persch 2016].The analysis showed a variety of specific space heating consumptions between 9 and 27 kWh/m<sup>2</sup>  a per square metre of heated floor space for the different projects. The mean value for all analysed apartments was 14.9 kWh/m<sup>2</sup>  a in 2014 and 16.4 kWh/m<sup>2</sup>  a in 2015, thus complying with the Passive House standard. 
- <font inherit/inherit;;#2ecc71;;inherit>???????Database were??????</font>  the monthly heat measurements of the municipal energy utility Stadtwerke Heidelberg for the building plots. All building plots, each comprising about 100 apartments, have one district heat transmission station with a + 
- <font inherit/inherit;;#2ecc71;;inherit>heat meter????</font>  . Total district heat consumption was directly measured, including space heating, hot water for showers and kitchens, and standby losses of installations and heating lines. The pure heat consumption was calculated taking into account the summer consumption in those months without t +For the following years 2016 – 2018, the city commissioned the regional energy agency KliBA with energy monitoring using the same method. Due to the growth of the Bahnstadt, a greater number of plots could be analysed. The results of the analysis for 2014 – 2015 were integrated into the report [Orlik 2019]. Figure 4 shows the specific heating consumption (without ambient temperature compensation). Each residential building plot is indicated by an anonymised marker BS-xy. The columns indicate the specific heating energy consumption per square metre in the years 2014 -2017 showing a range from 9 kWh/m<sup>2</sup>  a up to 25 kWh/m<sup>2</sup>  a (ignoring the extreme outlier BS-20). In view of the fact that the actual room temperature in winter is typically in the range between 21° to 22°C, the mean value correlates well with that for the Passive House standard. 
- <font inherit/inherit;;#2ecc71;;inherit>he ????space</font>  heating demand. This analysis is described in detail in the publication [[examples:passivehosue_district:passive_house_district_heidelberg-bahnstadt_monitor]] [Peper, Persch 2016].The analysis showed a variety of specific space heating consumptions between 9 and 27 kWh/m<sup>2</sup>  a per square metre of heated floor space for the different projects. The mean value for all analysed apartments was 14.9 kWh/m<sup>2</sup>  a in 2014 and 16.4 kWh/m<sup>2</sup>  a in 2015, thus complying with the Passive House standard.+ 
 +[{{ :picopen:fig4_heating_consumption_residential_bahnstadt.png?600 |Figure 4: Total specific space heating consumption of residential building projects in Bahnstadt in 2014 and 2017 [Orlik 2018]}}]
  
-For the following years 2016 – 2018, the city commissioned the regional energy agency KliBA with energy monitoring using the same method. Due to the growth of the Bahnstadt, a greater number of plots could be analysed. The results of the analysis for 2014 – 2015 were integrated into the report [Orlik 2019]. Figure 4 shows the specific heating consumption (without ambient temperature compensation). Each residential building plot is 
- <font inherit/inherit;;#2ecc71;;inherit>indicated?????</font>  by an anonymised marker BS-xy. The columns indicate the specific heating energy consumption per square metre in the years 2014 -2017 showing a range from 9 kWh/m<sup>2</sup>  a up to 25 kWh/m<sup>2</sup>  a (ignoring the extreme outlier BS-20). In view of the fact that the actual room temperature in winter is typically in the range between 21° to 22°C, the mean value correlates well with that for the Passive House standard. 
  
- [{{:picopen:fig4_heating_consumption_residential_bahnstadt.png?600|Figure 4: Total specific space heating consumption of residential building projects in Bahnstadt in 2014 and 2017 [Orlik 2018]}}] 
 ===== Discussion and conclusions ===== ===== Discussion and conclusions =====
  
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 [Orlik 2019] Orlik, W. (KliBA): Heidelberg Bahnstadt - Survey of the Energy Consumption 2014 – 2017 and preview 2018, Passive House Conference “Besser Bauen”, Heidelberg 2019 [Orlik 2019] Orlik, W. (KliBA): Heidelberg Bahnstadt - Survey of the Energy Consumption 2014 – 2017 and preview 2018, Passive House Conference “Besser Bauen”, Heidelberg 2019
 +
 +===== See also =====
 +
 +[[:examples:passivehosue_district]]
 +
 +[[:municipalities]]
 +
 +[[examples:passivehosue_district:Passive House district Heidelberg-Bahnstadt|Passive House district Heidelberg-Bahnstadt in the eyes of its residents]]
 +
 +[[examples:passivehosue_district:Passive House district Heidelberg-Bahnstadt monitor|Monitoring energy consumption in the new district Bahnstadt in Heidelberg]]
  
  
examples/passivehosue_district/passive_house_district_heidelberg-bahnstadt_experience.1733328597.txt.gz · Last modified: by jgrovesmith