Ролята на фотоволтаичните електросистеми в развитието на железопътната инфраструктура
The Role of Photovoltaic Power Systems in the Development of Railway Infrastructure

Author(s): Gergana Milcheva
Subject(s): Economy, Energy and Environmental Studies, Transport / Logistics
Published by: Университет за национално и световно стопанство (УНСС)
Keywords: photovoltaic systems; railway transport; sustainability; decarbonization
Summary/Abstract: This paper explores the potential of integrating photovoltaic (PV) systems into the railway infrastructure of Bulgaria as a means of decarbonization, increasing energy efficiency, and reducing operational costs. The study combines a document review of European strategies and international experience (United Kingdom, Switzerland, India) with quantitative assessments and a SWOT analysis tailored to Bulgarian conditions. The findings indicate that the national railway network has substantial potential for renewable energy generation. The most promising solutions include installations along railway corridors and on the rooftops of stations and depots, which offer both technical efficiency and rapid deployment. Alongside this potential, several barriers are identified: the lack of a clear legal framework for solar deployment in railway servitudes, high upfront investment costs, and limited institutional coordination. To address these challenges, the paper proposes targeted measures such as legislative amendments, access to EU funding mechanisms, the development of technical standards, and capacity building within the railway and energy sectors. In conclusion, integrating PV systems into railway infrastructure represents a strategic opportunity for Bulgaria to align transport modernization with the energy transition. Such initiatives could turn the railway sector into a key driver of sustainable development and position the country as a regional example in clean energy and mobility.

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