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

Municipality of Velenje 5th largest Slovenian city 35.000 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.

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 438.000 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 %

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,

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

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.

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.

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.

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

CHP of Primary School Škale - Before Preliminary heating: Fuel oil (consumption over 20.000 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

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

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

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

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).

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)

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

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

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

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

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

Thank you!