PV system layout for optimized self-consumption
2014 (English)In: Proc. 29th European Photovoltaic Solar Energy Conference, 2014Conference paper (Refereed)
With decreasing subsidies for PV systems, increased self-consumption of PV electricity could improve the profitability of grid-connected residential PV systems. Self-consumption is in this paper defined as the share of the PV production consumed in a building on an hourly basis. With higher prices for buying than selling electricity, the revenue due to self-consumption is higher than the profit of selling electricity to the grid. The focus of this paper is the potential to increase the self-consumption with alternative PV system layouts, i.e. several different azimuth and tilt angles, called 3DPV. Hourly data from an existing PV system on a detached house outside Västerås, Sweden, combined with meteorological and spot price data of electricity has been used, all from 2011. The results of one-year simulations show increased self-consumption and decreased PV production with 3DPV compared to a south-oriented PV system. The revenue decreases with 3DPV when using historical hourly spot market data. However, there are other benefits with 3DPV such as decreased rated power of the inverter due to lower PV peak production.
Place, publisher, year, edition, pages
Research subject Engineering Science with specialization in Solid State Physics
IdentifiersURN: urn:nbn:se:uu:diva-234181OAI: oai:DiVA.org:uu-234181DiVA: diva2:755509
29th European Photovoltaic Solar Energy Conference (EU PVSEC), Amsterdam, The Netherlands, 22 - 26 September, 2014