Autors: Stefanov, S. B., Georgiev A. P.
Title: Study of the technical and economic efficiency and the possibilities for the construction of photovoltaic power plant above the roof structures of transformer power substations 20/0,4 kV and their service areas
Keywords: photovoltaic, power, roof, service, structure, system, substations

Abstract: This report examines the possibility of constructing photovoltaic systems above concrete complete transformer posts to the medium voltage distribution networks. It has been analysed what capacities could be built depending on the size of the concrete facilities and their service areas, and what would be their economic and electricity efficiency. The main results of the analyses made show that this idea is not devoid of economic and electricity logic.


  1. Energy and water regulatory commission Decision № C-9/ 01.07.2018 Republik Bulgaria
  2. [3] Кирчев В, К Янев и М Георгиев 2006 Електрически мрежи средно и ниско напрежение Летера България
  3. [5] НАРЕДБА № 3 от 9.06.2004г. за устройството на електрическите уредби и електропроводните линии МЕЕР ДВ бр. 90/13.10.2004 и бр. 91/14.10.2004 Република България
  4. [6] Routledge Toyler and Francis gorup London and New York 2015 Solar Photovoltaic Basics: A Study Guide for the NABCEP Entry Level Exam
  5. Apex Solar LTD, 2020, Kalkulatory1, 06.03.2020, <[2]>, Дата на последен преглед (Last accessed on):
  6. EVN Bulgaria LTD, 2020, BusinessElectricityRegulated, 04.03.2020, <[4]>, Дата на последен преглед (Last accessed on):


TechSyst/ IOP Conference Series: Materials Science and Engineering, vol. 878, issue 1, pp. 012014, 2020, Bulgaria, ISSN 1757-8981/DOI :10.1088/1757-899X/878/1/012014

Full text of the publication

Вид: публикация в национален форум с межд. уч., публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus