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Denna förstudie utreder om en solcellsanläggning kan vara ett alternativ för Wången både ur ett ekonomiskt och miljömässigt perspektiv. Wången är ett nationellt utbildnings- och utvecklingscentrum för hästsport beläget i Jämtlands län. Principen för hur solceller fungerar och grundläggande faktorer som påverkar solcellers elproduktion beskrivs. Förstudien beskriver även översiktligt vilka in- och utflöden av materia och energi som solceller orsakar under deras livscykel.   Förstudien dimensionerar och beräknar den förväntade elproduktionen för tre olika takplaceringar på Wången med tre olika monteringslösningar. Elproduktion beräknas i datorprogrammet PVGIS och jämförs med Wångens elförbrukning. Ekonomiska kalkyler visar investeringskostnad och payback-tid för respektive alternativ. Förstudien jämför även emissionsfaktorer som orsakas av elproduktion av solceller och andra elproduktionsslag.   Slutsatsen är att elproduktionen per installerad toppeffekt skiljer sig relativt lite mellan de olika alternativen. Payback-tiden är mellan 14-20 år utan bidrag. Jämförelsen mellan emissionsfaktorer indikerar att elproduktion med solceller orsakar lägre emissionsfaktorer än marginalel (kolkraft) men högre emissionsfaktorer än medelel (huvudsakligen vattenkraft).

Diss. Linköping : Linköpings universitet, 2007.

Diss. (sammanfattning) Uppsala : Univ., 2003. / Härtill 5 uppsatser.

Diss. (sammanfattning) Uppsala : Uppsala universitet, 2006. / Härtill 7 uppsatser.

Diss. (sammanfattning) Linköping : Linköpings universitet, 2006. / Härtill 6 uppsatser.

The Swedish potential of electricity production from roof mounted solar panels has been determined in three steps: accessing the existing roof top areas, simulating the amount of electricity solar panels can produce on these areas and finally analyzing how large the necessary economical change is to make the solar cells profitable. The total existing amount of roof top areas are 319 square kilometers and the area distribution follows the distribution of people. This leads to an installed power of 47,9 GW which are expected to produce 49,0 TWh electricity per year. If the quality of the electricity is prioritized the highest the power is reduced to 3,7 GW, generating 3,8 TWh yearly, but if the hosting capacity is calculated from Sweden’s total electricity need, the capacity is 42 TWh per year. Today, solar panels are not profitable in Sweden for houses, even though there is a subsidy of 35 % of the investment costs, discounted in 25 years. The profitability is calculated with a cost of capital of 5 %, a price on electricity of 1 SEK/kWh and an investment cost of 20 SEK/Wp. With a kept subsidy of 35 %, the price of electricity needs to rise 30 % to make the systems profitable for houses, and the corresponding increase without the subsidy is 95 %. Historically the subsidy has decreased as the costs of solar cells have decreased as well. For apartment buildings solar panels are profitable with the governmental subsidy if the solar systems are at least 3 kWp per house hold. The corresponding price increase without the subsidy is 60 %.

This thesis aims to identify the building integrated photovoltaic solutions available in the market with respect to general pros and cons of different systems and a technical description of there attachment system. Investigate and provide examples of various building integrated photovoltaic solutions in Sweden and describe the experiences and results of these projects. The methods used to obtain relevant information are interviews with individuals involved in significant projects and a thorough search of different solutions from solar suppliers. The conclusion is that solar energy is needed for a sustainable society. There are endless opportunities regarding BIPV, with many companies with different products and individual solutions. But so far it’s not so customary in Sweden. Solar installations have until today not been able to be economically viable without subsidies from the state. But with declining prices for solar modules and rising energy price, a solar installation becomes more economically viable.

There have been several projects with solar installations in Sweden, and Sala-Heby Energi (SHE) wanted to create a solar plant. The question answered in this thesis is whether it is economically viable to create such a source of sustainable, renewable energy. The plant would be built with the help of the financial effort from 120 customers. This economic union would sell the electricity to the SHE, for SEK 4.50 per kWh up to a certain level over a period of 10 years. It would be a long term commitment to environmentally friendly electricity, using solar cells which convert sunlight directly into electricity. In year 2009 there was introduced a new state aid for photovoltaic systems, to create an increased and continuing interest in solar cells. The premium is 60% of the cost of the entire solar installation, both parts and labor. The project in Sala-Heby receives 2000KSEK as financial aid from the Swedish state. In order to assess the economic conditions for the project, the payoff-method helps us to calculate how long it takes to get back the money invested. The price determines how much equipment you can buy and calculating with an investment of 1500KSEK and state aid of 2000KSEK, we can buy solar panels for 3500KSEK. It is likely that the solar plant will produce 56000kWh per year due to the weather in the region. Sold at 4.5 SEK per kWh gives 252KSEK per year. So according to the payoff method, the repayment period for an investment of 1500KSEK (divided by 252KSEK) 6 years. The conclusion of this thesis is that the repayment period for the investment in solar cell plant is 6 years, and if the revenue of the project is used for project expansion, it could lead to further growth in revenue for the plant. There are several factors that are crucial to make this project possible. The State aid is necessary, because the high costs of building a solar plant. In this project, we have a good profitability thanks to SHE buying electricity from the sun for a price that is higher than the market price. Invite major electricity producers to follow SHEs example, while the government retains remaining aid. Without state aid, it is impossible to get this economic calculus together, and the project in Sala-Heby had come to nothing.

Diss. (sammanfattning) Uppsala : Univ., 2004. / Härtill 9 uppsatser.