REMOURBAN Site Eskisehir

Country & City: 
  • Turkey
  • Eskisehir
Contact Information: 
Murat Aksu
City of Eskisehir

Eskisehir is located in the mid-western side of Anatolia. According to 2014 census, the population of the Eskisehir is approximately 810,000 and 320,000 of the total population is living in Tepebasi district, which is the demo site for the REMOURBAN project.

It is a district of approximately 30,000 m2 with a built area of just under 10,000 m2 in the North-West of the city of Eskisehir within the jurisdiction of Tepebasi municipality of Eskisehir. The area was built in 2007 by TOKI, the government organization responsible for mass housing in Turkey.

Although relatively newly built, similar to most buildings built before the Energy Efficiency Law that came into force also that year, the district building stock consists of inefficiently constructed buildings in energy consumption terms.

The typology of buildings in the district are characteristic of the relatively recently built but energy-inefficient and poorly insulated type mass housing, typical of TOKI construction, highly inconsiderate of the climatic zone. In this respect the retrofit intervention in the district, via REMOURBAN, is thought to be highly relevant and exemplary for hundreds of thousands of residential building stock with similar characteristics, both in Eskisehir and also all around Turkey.

Although the Energy Efficiency Law came in force in 2007, even today there are significant problems in the enforcement of the standard on insulation. The geographical location of Eskisehir in Turkey and the location of Tepebasi municipality and the demo-site can be seen in the maps and photos.

There are 57 dwellings (9,110 m2 of conditioned area) in the district in which approximately 300 people will inhabit permanently by the end of the year. The building typology consists mainly of semi-detached villas. On the other hand, the Municipality is presently building an additional community centre in the centre of the district (approximately 600 m2) which, apart from housing the district heating/cooling system and roof PV system, will be an educational, re-training and re-skilling centre in Tepebasi. The centre will also act as a smart city and community demonstration site, with the smart and renewable energy urban management system in place with REMOURBAN. With workshops and classrooms, as well as artisanal activities, it is though that the district community Centre will attract a large number of citizens. 

Master Plans pertaining to urban transportation are carried out by Eskisehir metropolitan municipality. Spatial long term development plans (5 year plans) were prepared by the metropolitan municipality EBB in 2010. These Plans have important repercussions on future concentration of the urban population and their mobility.

The main selected residential development axis for the city is in the west, towards the present demo-site and was considered carefully regarding the integration of the demo-site mobility plans into the wider master plan. Most population increase in Eskisehir, forecast to increase to around 950,000 by 2023, by the state statistical organization will be realized in this axis. The selected demo-site is in the middle of this development area and will present a smart and sustainable alternative to urban development in Eskisehir.

Low Energy districts actions

  • Monitoring - advanced monitoring and energy performance visualization ICT platform
  • Retrofitting - 9.110 m2 district retrofitting | 57 dwellings | 400 resident’s sensitivity control | 60% energy savings
  • Renewable heating & cooling - Water sourced heat pump for heating & cooling (H&C) and biomass heating plant | solar thermal for domestic hot water –DHW (parabolic vacuum pipe)
  • Electricity distributed generation - Photovoltaic panel on roofs (100 kWp)| energy monitoring and control system
  • Advanced BEMS (Building Energy Management System) - energy monitoring system (automatic and occupancy control, CO2 sensors, comfort controllers)

A set of interventions is planned for increasing the energy efficiency in the Tepebasi district.

In the area of building renovation, ‘near-passive’ buildings will be targeted by the interventions at the demo-site. The most important component of the energy category interventions will be heating/cooling energy saving implementations on the building envelope via strong insulation of exterior walls, triple glazing in window units, pipe and attic insulation, etc.

A central district heating/cooling and hot water system, bringing significant energy saving, will be realized: this consists of a biomass central heating plant and a 300 kW water sourced heat pump working along with 4 wells to produce sufficient heat for the demo site.

Cooling will be supplied by heat pump and 300 kW heat recovery heat pump, which will also aid the DHW generation from rejected heat of system. 27 kWt solar collectors will supply the base load of DHW demand. All systems work in sequence.

All lighting within buildings and street lighting in the district will be turned to low energy LED lighting with smart applications.

An approximately 150 kWp PV system will generate around 70% of the power needs of the demo-site. The PV system consists of a 100 kWp rooftop BIPV installation, on the custom-made roof of the social centre, in addition to 50 kWp tracker systems on ground.

Critical loads in the demo-site will be served via battery storage that will be housed in the same building as the central heating plant.

Sustainable mobility actions

  • Full & hybrid electric vehicles - 50 electric bikes | 4 electric buses and minibuses for mass transit | 7 electric hybrid vehicles (EHV) for the municipality fleet
  • Charging infrastructure - 15 electric bike charging and parking stations | 2 electric vehicles charging stations
  • Door-to-door multimodality transport - advantageous ticketing options (bikes + public transport system) | public transportation smartcard | smart debit card applications
  • Intelligent transport systems - smart phone app mobility: info interface to bike system
  • Incentives - integrated bike rental system | free parking electric vehicles | municipality info kiosks for travel information

An additional 6.2 km expansion of the cycling lanes will be established during the project. The bicycle lanes will be integrated into the urban transportation network via nodes and bike parks at the city rail (ESTRAM) stations. A fleet of 50 e-bikes will be rented out by Tepebasi Municipality, as well as the necessary charging infrastructures will be installed in the appropriate locations.

Tepebasi Municipality will purchase 4 e-buses operating to/from demo-site and environs as well as 7 hybrid cars that will exploit the charging infrastructures to be established. 

Integrated infrastructure actions

  • City information platform - Smart City Monitoring Portal (SCMP)
  • Shared infrastructure - energy data monitoring infrastructure access via Smart City Monitoring Portal (SCMP)
  • Energy chain – micro grid: renewable, storage, demand side management
  • Multi-modal transport solutions - smart phone apps (info interface bike rental system, availability, location, social media promotion)
  • Resilience against adverse events - link smart grid with earthquake sensor for emergency scenarios

An overall smart control of all heating/power production and consumption for data analytics and energy saving interventions will be developed, with user side monitoring in every building unit for motivating the energy conscious behavioural change.

A bike rental operation will be realized: registration, security, ticketing connectivity to mass transit and charging control. A monitoring and control system of e-vehicles will be established. Finally, the City on Cloud city management system will be implemented, with all energy, mobility and other data on a cloud system, monitored by the municipality.

Society - Non technical actions

  • Community engagement - REMOURBAN common citizen engagement strategy
  • Social media strategy - common communication and engagement strategy 
  • Stakeholder platform - stakeholder platforms, protocols with municipalities, non-governmental organizations (NGOs) & associations
  • Implementation plan - REMOURBAN common strategy for development of integrated urban plan
  • EU smart cities framework - REMOURBAN common sustainable and smartness evaluation procedure

Expected impacts

  • 85% Energy savings
  • 79% CO2 emissions avoided
  • 600 citizens directly involved