No energy wasted Example of an energy strategy in urban areas

1. No energy wasted Example of an energy strategy in urban areas Brussels, 22nd June 2006

2. Energy efficiency is in discussion • finite fossil energy resources • increasing commodity prices • dependence on unstable political regions • discussion focused on end energy • look on use of primary resources is needed!! District heating in urban area is an important part of the solution! 2

3. Development of district heating in Vienna 1969 “Heizbetriebe Wien”, waste incineration and stand alone grids 350MWth capacity 1979 reached production 55% in heat plants and 45% in waste utilisation Since then new heat sources developed with the use of otherwise wasted energy Share 2005 Peak load heat plants 2,5% CHP 66,1 % Industrial CHP 7,6 % Waste utilisation 23,8% 3

4. Primary resource factor (PRF) PRF Fernwärme Wien < 0,30 Compare: Condensing boiler 1,2 Heatpump 0,85 Use of waste heat from industry, power generation and waste incineration is responsible for low PRF (Picture: Refinery near Vienna delivers industrial waste heat) Use it or loose it! 4

5. Advantages of low Primary resource factor (PRF) • Leads automatically to: • lower Emissions of greenhouse gases AND air pollutants – district heating reduced and will reduce the Volume of pollutants in Vienna • high security of supply – temporary shortages in gas or oil supply do not affect us • lower dependence on fuel prices - price for household customers have not risen in Vienna since 1991 5

6. Example for lower emissions in terms of CO2 Calculation from federal environmental agency Includes also CO2 from waste incineration Value without waste ~ 95 kg/MWh used energy 6

7. Today Market share 35% 5.290 GWh Heat sold 2020 expected market share > 50% 7.500 GWh heat sold Growth based mainly on renewables and waste heat! 7

8. New plants already under construction 2006 – biomass CHP + 37 MWth 2008 – waste utilisation Pfaffenau + 54 MWth 2008 – Geothermal source + 15 MWth 2009 – CHP repowering Simmering 1/2 + 170 MWth Installations to utilise capacities and to raise efficiency Additional mesh in the network + 100 MW useable Heat storage facility for district heating + 170 MW usable Planned plants – mid and long term options Bio fuel plants Further CHP-Repowering Coal based CHP including CO2 separation 8

9. New biomass CHP starts operation in few weeks max. 66 MWth Efficiency in CHP mode > 80 % 600.000 piled metre woodchips per year District heating 37,0 MW Up to 300 GWh per year Electricity 16,2 MWel > 140 GWh per year 9

10. Biggest difference to small biomass plants: • High efficient combined production of electricity and heat • Denox catalytic converter • Bag house filter this way? decentral How would you do it? or this way? central 10

11. Initiated development • Heat is to 1/3 produced in plants with renewable energy or waste as fuel • 97 % of the heat is made in CHP (waste, renewables, fossil) • To produce 2/3 of the heat the highefficient fossile CHP needs far less fuel input! • Therefore the share of renewables and waste on used fuels is 60% 11

12. This development will: • lower PRF < 0,15* • lower specific emissions of district heating system > 100 t CO2/GWh (CO2 of waste included) • further increase security of supply • guarantee low energy costs for the customers *calculation includes assumption that PRF for electricity in Europe will improve from 2,5 now to 2,1 in 2020 12

13. Consequence of this expansion for Vienna • Reduction of ~ 2,7 million MWh fossil fuels Saves about € 53 millions energy import • 38% reduction of CO2 emissions for domestic use • 11% reduction of CO2 emissions for waste treatment + 8600 GWh electricity produced in chp mode ~ 1/3 of Austrian thermal electricity production + 100% waste recycling in Vienna (energetic and material) + 100% of industrial waste heat in the area is used 13

14. = No Energy wasted What is possible in Vienna is also possible elsewhere Thank you for you attention 14