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This master thesis examines the economical profitability of integrating a battery storage system with the commercial property Pyramiden 19. The model is developed in Matlab and analyses three different profitability strategies for utilizing the battery storage: peak shaving, time of use arbritage and the grid supporting service FCR-D up. The modeling of these scenarios involves numerous parameters, with uncertainties surrounding factors such as battery price and characteristics, electricity prices, and the actual activation of grid-supporting services. Results indicate that only minor savings can be modeled through the electricity contracts, leading to both peak shaving and time-of-use arbitrage generating additional costs than previously when factoring in battery investment expenses. Although peak shaving and time of use arbritage are innovating strategies to redistribute consumption with, they are not suitable to reduce costs with all types of electricity contracts and cannot cover largely added investment costs. Looking at the third strategy, the flexibility market appears to hold a significant potential for economical profitability. The model shows that the grid supporting service FCR-D up, with a 2000 kW battery, reduces the initial annual electricity costs by 36%. This can mainly be explained by the fact that, in the model, the battery is activated for only 2% of the total hours in a year, and the fact that the service is compensated based on called bids rather than activated bids. Connection to the balance market would therefore not only generate revenues for the property but would also result in relief for the local electricity grid. Due to the uncertain future regarding compensation levels in the flexibility market, an early connection is recommended to ensure timely reimbursement for the battery.

Den globala utvecklingen som pågått sedan 1950-talet har resulterat i drastiska klimatförändringar vilket orsakat allvarliga miljöproblem. Dessa miljöproblem beror till stor del på en kraftig befolkningstillväxt. Befolkningstillväxten är starkt förknippad med ökade energibehov vilket ställer högre krav på hur energin produceras för att minska avtrycket på miljön. Ett tydligt steg i rätt riktning är tillämpningen av förnyelsebara energikällor. På den svenska marknaden är solkraft den energikälla som vuxit kraftigast de senaste åren. En av anledningarna till den kraftiga tillväxten är de statliga stimulanserna som givits. Sedan 2021 har de statliga stöden samtidigt dragits in vilket i synnerhet drabbar företag, däribland kommersiella fastighetsägare. Samtidigt kan det fortfarande finnas motiv för att investera i solceller, tack vare de positiva kostnadseffekter som en investering kan medföra. Det finns samtidigt oklarheter kring hur denna typ av investering påverkar värdet på fastigheter. Baserat på detta är studiens syfte att undersöka hur investeringar i solceller påverkar det ekonomiska värdet på kommersiella fastigheter samt hur detta värde maximeras med avseende på dimensionering respektive finansiering. Tidigare forskning inom området indikerar att det i huvudsak finns positiva samband mellan investeringar i solceller och värdet på fastigheter. Samtidigt berör dessa studier bostadsfastigheter på den internationella marknaden. Det finns således en begränsad forskning kring hur investeringar i solceller påverkar värdet på kommersiella fastigheter, inte minst på den svenska marknaden. För att uppfylla studiens syfte tillämpades, i första hand, en kvantitativ flerfallsstudie där 8 fastighetsobjekt undersöktes. Den kvantitativa data som samlades in om dessa objekt låg till grund för värderingen av dessa fastigheter. Värderingen, som baserades på “discounted cash flow method”, tillämpades för att tydliggöra hur värdet på fastigheterna förändrades i relation till ett ursprungsläge före en investering. Det kvantitativa metodvalet kombinerades med kvalitativa intervjuer vars syfte var att få en djupare förståelse om hur värdet på kommersiella fastigheter maximeras med avseende på dimensionering. Intervjuerna hade även för avsikt att verifiera de kvantitativa resultaten som genererades från fallstudien. Studiens resultat påvisar ett starkt samband mellan det ekonomiska värdet på kommersiella fastigheter och investeringar i solceller. Hur mycket fastighetsvärdet påverkas beror i stor utsträckning på hur investeringen finansieras samt hur lång analystid som beaktas. Bortsett från analystid tyder studiens resultat på att fastighetsvärdet i genomsnitt ökar 1,71% vid en direktfinansiering och 1,12% när investeringen görs i form av ett “power purchase agreement”. Samtidigt påvisar de kvalitativa resultaten att dimensioneringen av solcellsanläggningar bör göras utifrån den individuella fastighetens behov i termer av egenanvändning och total elanvändning. För att maximera egenanvändningen och därmed också fastighetsvärdet behöver dimensioneringen, ur et praktiskt perspektiv, ta hänsyn till den tillgängliga takytan, takets lutning samt takets väderstreck. / The global development, which has been going on since the 1950s, has resulted in drastic climate changes, which has caused serious environmental issues. These environmental issues are mainly caused by a strong population growth. The population growth is participially associated with increased energy needs, which sets higher requirements on how energy is produced, in order to reduce the impact on the environment. A step in the right direction is the application of renewable energy sources. In the Swedish market, solar power has been the fastest growing energy source in recent years. One of the reasons for this growth has been the stimulations offered by the government. Since 2021, the stimulations have been withdrawn which particularly affects companies, including commercial property owners. However, there may still be motives for investing in solar cells, thanks to the positive cost effects that an investment may bring. At the same time, there are uncertainties about how much this type of investment can affect the property value. Based on that, the purpose of this study is to investigate how investments in solar cells affect the economic value of commercial properties and how this value can be maximized with respect to dimensioning and financing, respectively. Previous research within this field indicates that there are positive relationships between investments in solar cells and the value of properties. At the same time, these studies concern residential properties on the international market. Based on this, there is limited research on how investments in solar cells affect the value of commercial properties, especially in the Swedish market. To fulfill the purpose of the study, a quantitative multiple-case study was applied, in which 8 real estate objects were examined. The quantitative data collected about these objects was the basis for the valuation of the properties. The valuation, which was based on a discounted cash flow method, was applied to clarify how the value of the properties changed in relation to a scenario before an investment was made. The quantitative method was combined with qualitative interviews whose purpose was to get a deeper understanding of how the value of commercial properties is maximized with respect to dimensioning. The interviews were also intended to verify the quantitative results generated from the case study. The results of the study indicate a strong relationship between the economic value of commercial properties and investments in solar cells. How much the property value is affected depends to a considerable extent on how the investment is financed and how long analysis time is considered. Apart from the analysis time, the results of the study indicate that the property value increases on average by 1.71% in case of direct financing and 1.12% when the investment is financed as a power purchase agreement. At the same time, the qualitative results indicate that the dimensioning of a solar cell system should be done based on the individual property needs, in terms of self-use and total electricity consumption. To maximize the self-usage, and thereby also the property value, the dimensioning needs to consider the available roof surface, the slope of the roof and the latitude of the roof.