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  • 1.
    Beltran, Francisco
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
    Sommerfeldt, Nelson
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
    Padovani, Filippo
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Rolando, Davide
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
    Madani Larijani, Hatef
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
    Solar Heat Pumps and Self-Consumption Can (and should) electricity suppliers encourage thermal storage?2022In: 2022 BuildSim Nordic, BSN 2022, EDP Sciences , 2022, article id 06005Conference paper (Refereed)
    Abstract [en]

    Heat pumps and water tanks can be used to increase PV self-consumption in buildings without any additional equipment, but there is sometimes a lack of economic incentives to maximize it that limits economic gains. Therefore, pricing conditions need to change in order to make self-consumption strategies more interesting for prosumers. This study aims at determining what, if any, unsubsidized market conditions could lead to economically motivated self-consumption control strategies with solar heat pumps. A sensitivity analysis is used on multiple pricing models based on current market conditions for a solar PV and ground source heat pump system for a single-family house in Norrköping, Sweden. The results show that control strategies aimed at maximizing self-consumption have very little impact on net costs, regardless of pricing model or variation in price. Feed-in-bonus is the most important aspect when comparing different pricing schemes, and no other sensitivity comes close.

  • 2.
    Padovani, Filippo
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Sommerfeldt, Nelson
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration. Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA.;Michigan Technol Univ, Dept Elect & Comp Engn, Houghton, MI 49931 USA..
    Longobardi, Francesca
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
    Pearce, Joshua M.
    Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA.;Michigan Technol Univ, Dept Elect & Comp Engn, Houghton, MI 49931 USA.;Western Univ, Dept Elect & Comp Engn, London, ON, Canada..
    Decarbonizing rural residential buildings in cold climates: A techno-economic analysis of heating electrification2021In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 250, article id 111284Article in journal (Refereed)
    Abstract [en]

    Given the need for decarbonization of the heating sector and the acute need of a propane replacement in the U.S. Upper Midwest, this study quantifies the techno-economic characteristics of sustainable heating electrification in isolated rural, residential buildings in cold climates without natural gas supply. Archetypal buildings are modeled under four levels of electrification. At each electrification level, a parametric solar photovoltaic (PV) sizing analysis is performed and the total life cycle cost, renewable fraction and greenhouse gas (GHG) emissions are calculated based on the primary energy supply for each building type. Cost optimal solutions are stress-tested with multi-dimensional sensitivity analyses. The results show that the total life cycle cost favors heating electrification in all cases and combining PV with heat pumps can reduce residential building GHG emissions by up to 50% immediately. This effect will grow over time, with over 90% reduction of building emissions if renewable energy targets are met. In using primary energy and emissions along with the multi-dimensional sensitivities, this study unique demonstrates the complex techno-economic interactions of PV and heat pumps. It is concluded that electrification is an economically viable decarbonization method for cold climates both now and in the future.

  • 3.
    Padovani, Filippo
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Topel, Monika
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Laumert, Björn
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
    Case Study of Shared Solar Applications in a Swedish Energy Community2023In: Proceedings of 2023 IEEE PES Innovative Smart Grid Technologies Europe, ISGT EUROPE 2023, Institute of Electrical and Electronics Engineers (IEEE) , 2023Conference paper (Refereed)
    Abstract [en]

    In response to the ongoing climate crisis, the European Union has introduced a legislative package aimed at promoting clean energy initiatives. In this context, energy communities (E C s) are defined as core actors in the energy transition plan, by promoting local electricity generation, consumption, and sharing. This study aims to investigate the feasibility of E C s in Sweden, by performing a case study on a real distribution system in a Stockholm district. Solar photovoltaic (P V) and energy storage (E S) technologies are modeled and implemented into the system, and different scenarios are tested to identify optimal techno-economic solutions. The results indicate that self-consumption can increase up to 95%, and annual electricity costs are reduced by up to 30% compared to a case without PV generation. The analysis of the net present value (NPV) shows that collective self-consumption through shared solar applications increases the profitability of investing in PV by more than 24%.

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