1. Energy management of Municipality of Velenje
Energy management of Municipality of Velenje Peter Virtič Faculty of Energy Technology, University of Maribor Dresden, October 15th, 2012

2. Municipality of Velenje
5th largest Slovenian city
inhabitants
In 1959 Velenje became the City
City of Velenje has made tremendous efforts to revitalize ruined landscape because of coal exploitation and to turn that handicap into advantage.
Strong economy with major company "Gorenje“ (domestic appliances) and "Coal mine Velenje" are along with the youth of the city the main reasons for pleasant and healthy living conditions.

3. Municipality of Velenje Share of heating (private):
Main heating system in the Municipality of Velenje
Private: 56,8 % use of energy
Industry: 30,2 % use of energy
Shares of heating
Municipality of Velenje
Total
Heat
MWh
Heat equivalent of fuel oil
931 l heat oil/person a
Share of heating (private):
Wood
12,9 %
Fuel oil
7,9 %
District heating from the Coal Thermal Powerplant in the neighboring municipality of Šoštanj
74,0 %
Other (liquified natural gas…)
5,2 %

4. District heating system in Šaleška Valley
Second largest district heating system in Slovenia: Velenje and Šoštanj, with suburban's: Podkraj, Pesje, Lokovica and Topolšica.
CHARACHERSITICS:
- 256 MW installed power,
- 144 km od pipelines,

5. Solving of energy problems
Reducing the impact of Climate Changes:
Rational use of energy
Renewable energy sources
Energy management

6. Energy management of Municipality of Velenje
2004: Energy concept of the Municipality of Velenje;
2006: Establishing of the Energy Agency KSSENA;
2007 – 2011:
Operational plan for energy reconstruction of public lightening in the Municipality of Velenje;
Energy audits, analyses, energy bookkeeping, energy reports (consumption and costs), etc;
Action planed for RES and RUE;
Implementation of RES and RUE process.

7. What is KSSENA?
Established in 2006 within the framework of Intelligent Energy Europe (IEE)
Founders: Municipality of Velenje (MOV), Municipality of Celje (MOC), Municipality of Slovenj Gradec (MOSG) and Public utilities company (KPV)
Number of employees: 6
Expert organisation specialized in the field of energetics, with the emphasis on RES and RUE, and project management.
Professional bridge between potential users (emphasis on the public sector) and suppliers of specialized energetic services and products.

8. Energy Audits More than 100 energy audits in Velenje (KSSENA):
Energy supply and consumption analyses,
Processing of energy data,
Determination of optimal measures,
Preparation of RES and RUE action plan for each particular building.

9. Energy bookkeeping Energy Act
- All public buildings with over 500 m2 of netto heat surface
MAIN FUNCTIONS: - managers recognize their energy consumption;
- invoice management (advanced energy bookkeeping), - energy and financial data management, - analysis, - financial and energy planning, - energy and financial reports, - financial and energetic planning for energy efficient measures, - monitoring, - all buildings connected in one comprehensive energy- informational system.
35 buildings in Velenje

10. CHP of Primary School Škale
- Before
Preliminary heating: Fuel oil (consumption over l) Obsolete and outdated boiler Energy number : > 200kWh/m2 (in 2007) - Reconstruction of the heating system
Implementation of cogeneration of heat and electric
power system
2 units (5,5 kWe and 12,5 kWh) Other Reconstructions: Replacement of windows Replacement of the door Replacement of blinds

11. PV power plant: Municipality of Velenje
Installed Power: 17,4 kWp Estimated annual electrical energy production: 17,4 MWh Estimated annual production in EUR: € 6,600 Selected contractor: BISOL, d.o.o. The completion of works: July 2010

12. PV power plant: Primary school Livada
Installed power: 49,68 kWp Estimated annual electricity production: 50 MWh Estimated annual production in EUR: € 19,000 Selected contractor: Antim, d.o.o. Completed: December 2010

13. Small PV power plant on Primary school Gustava Šiliha
Installed power: 46 kWp
Estimated annual electricity production: 46 MWh
Estimated annual production in EUR: € 18,000
Selected contractor: Antim, d.o.o.
The completion of works: December 2010

14. Free public transportation Lokalc
Free public transport has a direct impact on the environmental burden through the exhaust and noise. We assume the potential saving of CO2 emissions of at least 169 tones of CO2 per month, at the annual level this means of 2034 tones of CO2 emissions. (Source: ‚‘Lokalc‘‘ Survey in 2009 conducted by the Municipality of Velenje and the Energy Agency KSSENA among the users on the bus and the local population).

15. District cooling system in Velenje
In 2008 the Municipality of Velenje, Utility Company of Velenje and the Institute of District Energy established the first district cooling system in Slovenia
The installed power of cooling is 970 kW
The system is designed in three phases - it is expected to be completed by 2012
The advantage of cooling
Utilization of excess heat from the thermal power plant
Reduced energy use for cooling by 16% (comparing to the individual cooling units)

16. District cooling in Velenje
Number of
building:
Building
Surface
[m2]
Required power for
cooling [kW]
HO 1-1. PHASE
Municipality of Velenje
3.933
150
HO 1-2. PHASE
Administartive unit of Velenje
3.080
118
Gallery of Velenje
960 37
Cultural centre of Velenje
2.756
106
Restaurant DK
1.568 60
Court House of Velenje
3.498
135
New bus station
2.000 78
Sport hall
Red hall
3.600
200*
Steklena direkcija PV
1.500 59
Local swimming
poool
650 25
Total ADH-GO Velenje:
23.495
967

17. Street lighting : PV lights
Illumination of the pavement, where the power is supplied by the photovoltaic panels Length of pavement: 450 m Number of lamps: 13 Lamp: LED LSL 30 Pillar height h = 7 m Rechargeable Batteries: 2x40 Ah Photovoltaic Panel: 85 Wp Inverter power: 75 W

18. Street lighting: PILOT PROJECT „Energy self-sufficient STREET LIGHTING”
2 energetically independent street lamps
2 different RES: wind turbine and thin film PV module on pillar:
Velenje Lake

19. Technical specifications
PV panel:
136 W,
dimensions: 5,49 m x 0,39 m x 0,004 m
Vertical wind turbine:
rotor diameter of wind turbine: 1,25 m
height of the rotor: 1,1 m
mass of wind turbine: 25,5 kg
35 W LED lamp

20. Municipality of Velenje and Covenant of Mayors
March 2010: presentation of Action plan to the Mayor of Velenje
April 2010: presentation of the Action plan to Velenje City Council and the Covenant of Mayors
May 2010: Signature of the Covenant of Mayors in Brussels

21. Thank you!