National University "Lviv Polytechnic", Lviv
Lviv Polytechnic National University

The problem of photovoltaics integration into the building of architectural heritage is in the
zone of compromise between aspects of preservation and long-term use. The quality and success of
such energy modernization are based on the principles of preserving and extending the term of the
utilitarian use of buildings. It is crucial in this situation to determine the key principles of solar cell
integration into buildings that form the historic environment. The constituent values of historic
buildings form the basis for their definition. Domestic researchers have previously focused on some
issues of "inconsistency" in the domestic monument protection legislation, which occur not only
without formal violations of the law but on the contrary, based on its rules. The article continues the
research of problems, methods, rules, and limitations of photovoltaic systems integration into the
architecture of historical buildings initiated by the authors. The purpose of this article is to consider
issues related to the cultural value preservation of the historic buildings in the integration of solar
systems, as well as to determine the priorities, value characteristics defined by legislative and
regulatory documents of Ukraine, value components of the historic buildings. The purpose is also to
measure the value components` interaction and to form the principles of solar cell integration based
on it. The basic priority in making decisions on energy modernization, switching to new energy types,
and introducing solar generation, is to promote the preservation and long-term operation of cultural
heritage buildings. In total, the components form a broader definition of the value of historic
buildings and environment, which goes beyond what is defined by law. Decisions on energy measures
for cultural heritage buildings require a search for a balance of priorities between different value
components. Based on the value components, nine principles of solar cells integration into historic
buildings have been formed.

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