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Solenergi på Nordvästra Kungsholmen
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Solar Energy at North-West of Kungsholmen (English)
Abstract [en]

The energy that the earth receives from the sun hourly has potential to cover a year’s energy demand in the world. Further, this type of energy is environmentally friendly, natural and free of cost. This report covers solar energy in an urban environment and consists of a case study of installations of photovoltaic cells in a part of the city of Stockholm. It is mainly the economic aspects that are covered but there is also a discussion about the practical consequences and the sustainability as a result of integration of solar energy in an urban environment.

 

The aim of the study is to present results from economic calculations for utilization of solar energy in chosen buildings in Kungsholmen in Stockholm. The techniques that compose possible solar energy systems in urban environments are presented in a literature review as well as the financial aspects that affect the alternative that is perceived as most appropriate for the buildings. 

 

The techniques that are being covered are the photovoltaic cells as well as systems of heating and cooling from solar collectors. The application of photovoltaic cells on the objects of study is constituted by an intended installation, where the physical potential of the buildings as well as the energy supply from the sun forms the basis for the different energy calculations that are carried out. Further, the system engineering aspects and the converted energy from the photovoltaic cells are included and compared with the energy demand and the energy supply of the studied objects. Over time, the installation results in revenues from converted energy as well as expenses, which in an economic calculation compare with the expense of the photovoltaic cells. The result shows that the profitability is dependent on various variables and that there are both positive and negative investment decisions for the studied objects. In the sensitivity analysis a  variation of the variables is tested to show the impact on the end result. It appears that state aid, development of the price of energy, cost of capital and type of photovoltaic module has impact on the investment decision. The report is finished off with a conclusion and recommendations for future studies.

Abstract [sv]

Den solenergi som jorden tar emot varje timme skulle kunna täcka hela världens energianvändande under ett helt år. Dessutom är energin miljövänlig, naturlig och kostnadsfri. Denna rapport redovisar en fallstudie för uppförande av solcellsinstallationer I Stockholms innerstad. Huvudsakligen berörs de ekonomiska aspekterna men diskussion förs även kring praktiska implikationer och hållbarheten av solenergi i stadsmiljö. Målet med studien är att presentera resultatet från ekonomiska kalkyler för integrering av solenergi hos utvalda studieobjekt i form av existerande fastigheter på Kungsholmen i Stockholm.

 

Tänkbara solenergisystem i stadsmiljö presenteras i en litteraturstudie tillsammans med de ekonomiska aspekterna rörande den systemlösning som uppfattas mest lämpad för fastigheterna som ingår i studien. De tekniker och tekniska system som behandlas är solcellssystem samt värme- och kylsystem med solfångare. Appliceringen av solcellssystem på studieobjekten utgörs av en tänkt installation, där byggnadernas fysiska potential tillsammans med energitillförseln från solen utgör grunden för energiberäkningarna. De systemtekniska aspekterna och den omvandlade energin från solcellssystemet inkluderas och jämförs med studieobjektens behov samt aktuell tillgång på energi. Över tid resulterar installationen i intäkter från omvandlad energi samt kostnader, vilka i en ekonomisk kalkyl jämförs med kostnaden för solcellsanläggningens grundinvestering.

 

Resultatet visar att lönsamheten är beroende av olika variabler och ger både positiva och negative investeringsbeslut för de olika studieobjekten. I en känslighetsanalys testas inverkan av variablernas värden på stabiliteten i resultatet. Det framgår att statligt stöd, energiprisutveckling, kalkylränta och val av modultyp har inverkan på investeringsbeslutet. I rapporten presenteras en slutsats med rekommendation för framtida arbete.

Place, publisher, year, edition, pages
2013.
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-123946OAI: oai:DiVA.org:kth-123946DiVA: diva2:631163
Subject / course
Energy Technology
Educational program
Master of Science in Engineering - Industrial Engineering and Management
Supervisors
Examiners
Available from: 2013-06-24 Created: 2013-06-20 Last updated: 2013-06-24Bibliographically approved

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