Sizing and Optimization of Cost-Efficient PV Generator System at Residential Buildings in the Region of Ruse, Bulgaria

  • Katerina Gabrovska-Evstatieva
  • Boris Evstatiev
  • Ognyan Dinolov
  • Nicolay Mihailov
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


In this study a method for cost-efficient investments in PV generators at residential buildings has been presented. It takes into consideration all the initial investment and maintenance costs as well as the potential benefits, based on the mean hourly solar energy production for each month of the year in Ruse, Bulgaria. The variation of the net present value as well as the return on the investment are investigated for different scenarios, using a typical daily energy consumption distribution at residential buildings. The obtained results show that for properly sized installations the investment could pay off for approximately 8 years. On the other hand the annual money loses from oversized investments increase significantly and could be approximated with a quadratic equation.


Sizing Optimization PV generators Residential buildings Cost-efficient 


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Katerina Gabrovska-Evstatieva
    • 1
  • Boris Evstatiev
    • 1
  • Ognyan Dinolov
    • 1
  • Nicolay Mihailov
    • 1
  1. 1.Faculty of Computer Science and Faculty of Electrical EngineeringRuse University “Angel Kanchev”RuseBulgaria

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