This document summarizes the Zero One store in St. Pölten, Austria, METRO's first zero emission wholesale store. Key measures taken include generating electricity from 1,008 kWp of solar panels, avoiding external heating through insulation and recovery systems, and reducing emissions 60% through efficient lighting and cooling. Refrigeration uses a transcritical booster system with 93% heat recovery. The EVALIFT and TEKOJET systems increase compressor efficiency, reducing energy consumption by 51,203 euros per year compared to a standard system. The store aims to serve as a best practice example for METRO's goal of reducing CO2 emissions 50% by 2030.

2. ATMOsphere Europe 2019
Good Practice METRO +TEKO
ZEROone Store St. Pölten/ Austria
Warsaw, 16 October 2019
Olaf Schulze + Andreas Meier

3. Zero One store St. Pölten
METRO Austria
METROTarget: 2030 vs. 2011 ./. - 50% CO2
• Energy Efficiency - (ESP & EAP)
• F-Gas Exit – (FEP)
• RE Production - Project “Smaragd” & “Rubin”
• GREENSTORE + ZEUS INITIATIVE (ZERO one)
• Contribution from New Stores + Remodeling
• St. Pölten = Start 2015, Opening 10/2017
Z1

4. From Idea to Realization of ZERO one.
Wholesale Store St. Pölten:
• Opening 23.10.2017
• 12.700 m² GFA, 8.770 m² NSA
• 80% Food / 20% Nonfood; 144 Employees
• 1.000 Customers/Day; SCO 44% + HoReCa 47%
• BREEAM outstanding!
Plan ZERO one MCC AT
METRO
worldwide
Electricity 115 kWh 226 kWh 308 kWh
Heating 0 kWh 139 kWh 108 kWh
HFC leakage rate 0% 0,70% 9,80%
CO2 emissions 0 kg 119 kg 299 kg
RE production 100% 0% 1%

5. KEY Measures of Zero One.
• Challenges Solutions
• 1. Energy avoidance NO external heating energy
• 2. Energy reduction Electricity ./. - 60% (esp. Light + Cooling)
• 3. Emission reduction TEKO – your support is needed!
• 4. Natural building materials Wood, recycled glass
• 5. Water Natural rainwater infiltration, rain water usage
• 6. Customers, traffic Bus station, Bicycle racks, EV chargers
• 7. RE Production 1.008 kWp PV
• 8. Energy storage No, but feed in into balancing zone for MCC AT
• Energy consumption: ~1.000.000 kWh = 115 kWh/m² NSA

6. St. Pölten = 1st ZERO Emission store.

7. Awarded for LEADING Energy Efficiency + Sustainability.

8. EVALIFT + TEKOJET
EVALIFT + TEKOJET
CO2 Booster incl. ECO

9. Refrigeration technology
• Transcritical Booster System
- 290 kW MT
- 93 kW LT
• Using 100% heat recovery from
refrigeration system
- 160 kW Heat recovery
- Hot water (heating water and
domestic water)
• Air Conditioning of sales area
- 12 kW

10. Suction pressure increase = Energy saving
without EVALIFT
-35
-30
-25
-20
-15
-10
-5
0
MT LT
with EVALIFT
Efficiency increase
Efficiency increase

11. Simple Solutions
• EVALIFT 0K- 2K superheating
• Efficiency module and compressor
protection
• Almost no additional components
• Easy to understand
• Can be deactivated without any
loss of power in the event of a
breakdown (even by remote
control)

12. TEKOJET
• Combines EVALIFT and gas-ejector
• Parallel compressor is set for this unit
size
- If calculation is incorrect, parallel
compressor is of no use
• Variable ejector
- Use of the existing expansion energy
- Brings a partial volume flow to MP level
without additional drive power
à more gas to transport à more runtime
à higher efficiency benefits

13. TEKOJET effect in METRO St. Pölten
• Running time parallel compressors
5,791h = 75 % (instead of mostly 15%)
Parallel

14. Energy consumption / Operational costs
Energy / year Capacity Price Total costs
Refrigeration 276.211 kWh 2.103.456 kWh
0,15 €
41.432 €
Heating 65.142 kWh 370.406 kWh 9.771 €
System 341.354 kWh - 51.203 €

15. Impressions METRO St. Pölten

16. Contractors are under pressure
• Less than 5-10% of contractors are
used to CO2 transcritical systems
• Still gap of competence
• à Market needs simple and
transparent solutions for MT & LT
• à Avoid the use of additional
components and complex
solutions

17. Increase in construction and service costs in the retail sector
- sales curve with less progression in comparison!
Simple
Unit
Easy
Service
Lower
costs
End users are under pressure

18. www.facebook.com/
tekogmbh
www.linkedin.com/
company/teko-refrigeration
www.youtube.com
TEKO Kältetechnik
Let's keep in touch!
TEKOGesellschaft für Kältetechnik mbH –Carl-Benz-Str. 1 – 63674Altenstadt –Germany
www.teko-gmbh.com

19. KONTAKT
Olaf Schulze
Director Energy Management
Investments & Technical Solutions
METRO AG
Schlüterstraße 01
40235 Düsseldorf
M +49 151 1511-1870
T +49 211 6886-4647
E olaf.schulze@metro.de
www.metroag.de
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