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This paper interrogates the impact of spatial transformations on urban life. It explores the level of individual and group satisfaction and sense of well-being within the urban public realm; this is undertaken by reporting on the outcomes of an assessment study of three key public open spaces in Belgrade, developed from a quality of urban life (QoUL) perspective.

A systematic multilevel assessment method is utilised, with the aim of determining the material and immaterial elements that can contribute to an individual's sense of comfort within a public space. The study places emphasis on the functional, social and perceptual attributes as they relate to the physical characteristics of three assessed spaces.

The assessment study resulted in a systematic overview of the different attributes of the three assessed spaces. With various performance levels within each set of attributes, the study identifies key challenges and problems that could lead towards determining possible opportunities for future local urban interventions and developmental actions.

With the shifts in policies and the associated governance process that redefined the outlook of previously enforced development and urban growth in the last two decades, the capital of Serbia, Belgrade, has undergone significant spatial changes. This has resulted in a certain level of fragmentation in the urban fabric, leading to a number of challenges concerning public health, well-being, safety, accessibility, comfort and urban mobility, to name a few, that need to be better addressed and understood within the local context.

The purpose of this paper is to present a critical review of the key trends in the integration of photovoltaic (PV) facilities into the built environment in cities. This is regarded as part of a series of measures towards wider use of renewable energy sources.

The problem has been approached from the point that cities are consumers of large amounts of energy. They require uninterrupted energy supply but with dynamic power profile. Mainly consumption of energy generated from fossil fuels is present nowadays with significant pollution of the environment as a consequence. The sustainable energy transition in cities means increasing the supply of energy from renewable sources.

The paper points to the integration of PV renewable systems in the built environment, opportunities and constraints, design conditions and tools. The consideration of the constraints which creates urban environment is carried out to understand the complexity of selecting locations in the cities. The paper gives an overview of the possibilities of PV systems integration in the built environment and discusses physical limitations in the urban environment and simulation tools as well as challenges and research and development issues.

The paper offers a critical review of the PV applications which have been illustrated with examples from developed countries. However, examples from developing markets have not been considered. Future work would address this limitation and enable the discussion from a comparative perspective.

The study gives a comprehensive overview of PV integrations in contemporary cities, stimulating architects’ practitioners to acquire the PV technology and aesthetics, and to apply it in future developments.

Observing the use of PV applications from the perspective of architects and designers the discussion and examples covered in this paper offers an original review, which provides the base future in-depth studies on PV applications in various contexts.