The <str<strong>on</strong>g>12th</str<strong>on</strong>g> <str<strong>on</strong>g>Internati<strong>on</strong>al</str<strong>on</strong>g> <str<strong>on</strong>g>Symposium</str<strong>on</strong>g> <strong>on</strong> <strong>District</strong> <strong>Heating</strong> <strong>and</strong> <strong>Cooling</strong>,September 5 th to September 7 th , 2010, Tallinn, Est<strong>on</strong>iaModelling of a system gives <strong>on</strong>e side of the truth, asdoes interviewing the actors involved. When combiningthe methods there is a possibility of getting a better <strong>and</strong>deeper underst<strong>and</strong>ing of the actual potential forcooperati<strong>on</strong>. The historical <strong>and</strong> social aspects cannotbe neglected; they can in many cases explain whypotentially beneficial cooperati<strong>on</strong> is or is not d<strong>on</strong>e,while modelling can show the actual potential.7. ACKNOWLEDGEMENTSThis article has been carried out in two PhD projects inthe Energy System Program, financed by the SwedishEnergy Agency. The authors would also like to thankJenny Palm (Linköping University) <strong>and</strong> Louise Trygg(Linköping University) for valuable comments <strong>on</strong> thepaper.8. REFERENCES[1] Statens energimyndighet (Swedish EnergyAgency), Energy in Sweden 2009. SwedishNati<strong>on</strong>al Energy Administrati<strong>on</strong>, ET 2009:30,Eskilstuna, Sweden (2009)[2] S. Werner, Fjärrvärmens utbredning och utveckling(The development <strong>and</strong> expansi<strong>on</strong> of districtheating), Värmeföreningen, Stockholm (1989)[3] European Uni<strong>on</strong>, Directive 2004/8/EC, ‗Directive <strong>on</strong>the promoti<strong>on</strong> of cogenerati<strong>on</strong> based <strong>on</strong> a usefulheat dem<strong>and</strong> in the internal energy market‘,(2010), homepage:http://www.managenergy.net/products/R81.htm,2010-04-28[4] European Uni<strong>on</strong>, , Directive 96/92/EC ‗Sec<strong>on</strong>dreport to the Council <strong>and</strong> the European Parliament<strong>on</strong> harm<strong>on</strong>isati<strong>on</strong> requirements c<strong>on</strong>cerningcomm<strong>on</strong> rules for the internal market in electricity‘,(2010), homepage:http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32003L0054:EN:NOT , 2010-04-28[5] B. Dahlroth, Öppnade fjärrvärmenät iStorstockholm (Open district heating network ingreater Stockholm), Stockholm, Sweden:Fastighetsägarna Stockholm, (2009)[6] D. Henning, Optimisati<strong>on</strong> of Local <strong>and</strong> Nati<strong>on</strong>alEnergy Systems. Development <strong>and</strong> use of theMODEST model. Dissertati<strong>on</strong> No. 559. Linköpingsuniversitet, Linköping (1999)[7] S. Kvale <strong>and</strong> S. Brinkmann, Den kvalitativaforskningsintervjun (The qualitative researchinterview), Studentlitteratur, Lund (2009)[8] Nordpool. Nordpool electricity spot market, (2009),homepage: http://www. nordpool.com. 2009-12-18.[9] M. Melkers<strong>on</strong> <strong>and</strong> S-O. Söderberg, Dynamiskaelpriser – elprissättning på en integrerad europeiskelmarknad (Dynamic electricity prices – pricing inan integrated European electricity market – inSwedish), Sweden: Institute of Technology, Dept ofMech Eng, Linköping University, Linköping (2004)[10] N. Levins<strong>on</strong> <strong>and</strong> R. Freiman, Optimal kraftvärmeoch nätinvestering I Stockholms fjärrvärmesystem(Optimal CHP <strong>and</strong> district heating networkinvestments in Stockholm), Linköping University,Linköping (2005)[11] Statens energimyndighet (Swedish EnergyAgency). ‗Marginal elprodukti<strong>on</strong> och CO 2 -utsläpp iSverige‘ (Marginal electricity producti<strong>on</strong> <strong>and</strong> CO 2 -emissi<strong>on</strong>s in Sweden, in Swedish), SwedishNati<strong>on</strong>al Energy Administrati<strong>on</strong>, ER 14:2002,Eskilstuna, Sweden. (2002)[12] E. Dotzauer, Greenhouse gas emissi<strong>on</strong>s frompower generati<strong>on</strong> <strong>and</strong> c<strong>on</strong>sumpti<strong>on</strong> in a nordicperspective, Energy Policy 2010, Vol. 38(2), pp.701-704.[13] H. Hanss<strong>on</strong>, S-E. Larss<strong>on</strong>, O. Nyström, F. Olss<strong>on</strong><strong>and</strong> B. Ridell, El från nya anläggningar (ElectricPower from New Plants), Elforsk, Stockholm(2007)[14] M. Danestig, A. Gebremehdin <strong>and</strong> B. Karlss<strong>on</strong>,Stockholms CHP potential – An opportunity forCO 2 reducti<strong>on</strong>s? Energy Policy 2007, Vol. 35(9),pp. 4650-4660.[15] P. Tholl<strong>and</strong>er <strong>and</strong> I-L. Svenss<strong>on</strong>, ‖Vägen tillframgångsrika värmesamarbeten – en fallstudie‖(Road to succesful heating co-operati<strong>on</strong>s – a casestudy), In: L. Trygg, L. et al (2009) optimalafjärrvärmesystemi symbios med industri ochsamhälle, Rapport 2009:13, Svensk fjärrvärme(Swedish district heating associati<strong>on</strong>) (2009)[16] J. Fors, ‖Spillvärme från industri till fjärrvärmenät –sammanfattning av intervjuer på 5 orter‖, (Excessheat from industry to district heating systems)Rapport 2004:5, Svensk fjärrvärme (Swedishdistrict heating associati<strong>on</strong>) (2004)[17] S. Grönkvist <strong>and</strong> S. S<strong>and</strong>berg, ―Driving forces <strong>and</strong>obstacles with regard to co-operati<strong>on</strong>betweenmunicipal energy companies <strong>and</strong> processindustries in Sweden‖, Energy Policy 2006, Vol. 34,pp. 1508–1519.[18] T.P. Hughes, Networks of Power: Electrificati<strong>on</strong> inWestern Society 1880 – 1930, John HopkinsUniversity Press, Baltimore (1983)[19] B. Joerges, Large Technical Systems: C<strong>on</strong>cepts<strong>and</strong> issues, In: R. Mayntz <strong>and</strong> T.P. Hughes, The295
The <str<strong>on</strong>g>12th</str<strong>on</strong>g> <str<strong>on</strong>g>Internati<strong>on</strong>al</str<strong>on</strong>g> <str<strong>on</strong>g>Symposium</str<strong>on</strong>g> <strong>on</strong> <strong>District</strong> <strong>Heating</strong> <strong>and</strong> <strong>Cooling</strong>,September 5 th to September 7 th , 2010, Tallinn, Est<strong>on</strong>iaDevelopment of Large Technical Systems,Campus Verlag, Frankfurt (1988)[20] J. Summert<strong>on</strong>, Changing Large TechnicalSystems, Westview Press, Boulder, CO (1994)[21] SCB (Statistics Sweden). Utsläpp av växhusgaser,(2010), homepage:http://www. scb.se. 2010-02-17.[22] Söderenergi, Producti<strong>on</strong> manager, 090318[23] Fortum, Site manager <strong>and</strong> Senior advisor, 090325[24] Norrenergi, Producti<strong>on</strong> manager, 030304[25] E.ON., Group manager producti<strong>on</strong>, 090323[26] STOSEB, STOSEB 92 – Energiframtider förStockholms län (STOSEB 92 – Energy futures forStockholms County), STOSEB, Stockholm (1992)[27] Fortum & Stadsbyggnadsk<strong>on</strong>toret, Möjlighetsstudie:Nätintegrati<strong>on</strong> Storstockholm, (Possibilitystudy: Netintegrati<strong>on</strong> in greater Stockholm) Fortum& Stadsbyggnadsk<strong>on</strong>toret, Stockholm (2005)[28] Vattenfall, Head of business development <strong>and</strong>Senior advisor, 090320[29] STOSEB, 25 Energiska år – Om Stor-StockholmsEnergi AB (25 Energic years – about greaterStockholms Energy AB), STOSEB: Stockholm,(2003)296
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