Nikolaos Skandalos

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• PhD
• PostDoc Position at University of Patras

Integrating renewable energy systems into urban neighborhoods is essential for achieving sustainable development and decarbonization. This study investigates the integration of building-integrated photovoltaics and energy-sharing mechanisms to achieve net-zero energy communities in low-income urban neighborhoods. Using a social housing neighborhood...

Since the time to achieve the sustainable urban transformation to carbon neutrality and mitigate climate change is limited, rapid and deep actions are needed in a feasible pathway based on existing, scalable, and adaptable technological and natural solutions to be deployed within this decade. In this work, we explore, for the first time to the best...

With the increase of photovoltaic (PV) penetration in the power grid, the reliability and longevity of PV modules are important for improving their payback period and reducing recycling needs. Although the performance of PV systems has been optimized to achieve a multi-fold increase in their electricity generation compared to ten years ago, improve...

To achieve the objectives of COP28 for transitioning away from fossil fuels and phasing these out, both natural and technological solutions are essential, necessitating a step-change in how we implement social innovation. Given the significant CO2 emissions produced by the building sector, there is an urgent need for a transformative shift towards...

With the roadmap to carbon-neutral cities, offset and trading opportunities will leave the remnants of the unprecedented growth based on fossil fuels with urban air pollution and city impact of climate change. Promoting net zero and positivity in electricity generation can substitute the use of fossil fuels with clean energy but introduces consider...

This work presents a practical roadmap for developing PEDs, emphasizing the strategic integration of Building Integrated Photovoltaics (BIPV). A case study in Žižkov-Prague demonstrated the proposed methodology. The study integrates architectural design and energy analysis within a simulation environment, optimizing BIPV positioning. The results re...

This study provides an overview of current situation and policy planning documents for the implementation of Renewable Energy Sources [RES] in Latvia and Czechia. The main aim is to evaluate the gathered experience in each country in the use of photovoltaics [PV] for electricity production and to define the possible potential of using PV for achiev...

The necessity of affordable and durable building-integrated photovoltaics has gained widespread importance for the renewable energy transition involving electrification and decarbonization in climate-neutral cities that possess many public health co-benefits. Although the PV market is dominated by polycrystalline and monocrystalline silicon solar c...

This study focuses on achieving climate neutrality in European cities by integrating solar energy technologies and nature-based solutions. Through an examination of current practices, emerging trends, and case examples, the study explores the benefits, challenges, and prospects associated with this integration in urban contexts. A pioneering approa...

The need to address climate change and establish sustainable urban environments has driven increased efforts in Europe to develop climate-neutral cities. This study highlights the importance of integrating solar energy technologies and nature-based solutions as key strategies to achieve climate neutrality. By examining current practices, emerging t...

The current work reports on the effect of local climatic conditions on electricity generation of typical building integrated photovoltaic systems (BIPVs). Three different climates of a) semi-continental with increased heating needs, b) Mediterranean with moderate heating and cooling needs and c) hot desert with high cooling needs are considered for...

Despite the technical maturity and substantial potential cost reduction of BIPV technologies, there are still challenges to overcome for the expansion of BIPV applications and their wider adaptation at global level. Among these, the alignment of PV integration with particular climate and environmental conditions of the local solar architecture is c...

Floating photovoltaics (FPVs) provide various benefits especially where land is scarce (e.g., reducing land occupancy, water evaporation and environment control…), or when they are combined with hydropower plants (enhanced capacity factor and green energy generation). Software such as PV*SOL, SAM and PVSyst® are commonly used for the design and sim...

Building integrated photovoltaic systems (BIPVs) focusing on windows, such as semi-transparent photovoltaic (STPV) or PV shading devices (PVSD), are proposed as efficient approaches to the production of electricity and the improvement of building energy performance. However, glass replacement with advanced PV concepts needs thorough energy and envi...

This paper reports on the electrical performance of two bloc-of-flats buildings located in Prague, Czech Republic. Measured data of electrical consumption were used to investigate the effect of photovoltaic (PV) and battery energy storage system (BESS) systems on the overlap between generation and demand. Different PV array configurations and batte...

Good design and sizing of photovoltaic (PV) systems is very important in order to effectively harvest energy and minimize the investment cost. The optimum tilt and azimuth angles at which a PV system should be installed are often debated. This paper evaluates the tradeoff between annual energy generation and payback period reduction through the ana...

On the road towards Low or Zero Energy Buildings (ZEB), both a reduction of energy demand and on-site electricity generation from renewable energy systems becomes necessary. Recently, Photovoltaics (PVs) have been widely used in modern buildings as part of the façade, mounted on the envelope or integrated as construction elements. This work investi...

Energy management is very important for the effective operation of a hybrid system composed of various energy sources. The present work aims to develop an effective control strategy in order to reduce the grid-maximal contracted power of a hybrid building containing PV systems, combined heat and power (CHP) unit and battery energy storage system (B...

Solar PV shading devices are good solutions to control daylight and reduce the unwanted solar gains, while generate electricity at the same time. Since thermal, electrical and daylighting performance competing each other, it is imperative to consider specific design criteria to optimize and allow energy efficient level of thermal and visual perform...

This work highlights the Building-Integrated Photovoltaics (BIPV) potential in two urban areas with different characteristics in the city of Prague. The representative building blocks were selected and the CitySim software tool was used for the assessment of the hourly irradiation profiles on each surface over a one-year period. Considering appropr...

Abstract— this article describes a method to optimize the utilization of a BIPV system with battery energy storage at an administrative office building in Jeseník, Czech Republic. Solar analysis is taking into account constraints from the architecture and surrounding of the building in order to identify suitable surfaces and propose BIPV solutions....

In order to reduce the building's energy demand, different glass innovative technologies are currently under intensive research and development. However, applicability of a particular technology requires its extensive environmental and energy characterization in building integration. In this work, overall performance (thermal, optical, and electric...

In order to reduce the building heat gains through windows, among different glazing cooling technologies being under intensive research and development are the addition of semi-transparent photovoltaics (STPV). However, the implementation of a particular technology requires its extensive environmental and thermal characterization in buildings. In t...

In the frame of zero-energy buildings, the integration of renewable energy sources along with energy saving strategies must be the target. PV glazing is an innovative technology which apart from electricity production can reduce energy consumption in terms of cooling, heating and artificial lighting. Thus, it mitigates the pollution and reduces ass...