Resources

Additive manufacturing and topology optimization are enabling the development of lightweight, high-performance mechanical components with complex geometries. This study investigates an automotive engine mount bracket using 3D scanning, finite element analysis, and topology optimization, comparing the mechanical performance of topology-optimized, gyroid, and auxetic designs.

Forecasting wind power accurately remains a critical challenge in integrating renewable energy into modern power systems. In response to this challenge, this paper presents a hybrid ensemble learning framework for wind power point forecasting, combining multiple Machine Learning regressors through a meta-learning strategy. The approach leverages historical SCADA measurements, weather forecasted data and physically derived theoretical power curves to enrich the feature space.

Community energy initiatives have shown strong potential at local level, but their site-specific nature often limits wider scalability. Building on real-world demonstrations in Crete, this paper introduces a modular framework for Renewable Energy Valleys, combining residential demand with different sectoral applications such as tourism, rural heating and transport. By optimally integrating solar, wind, battery storage and hydrogen systems across varying renewable energy targets, the approach identifies flexible and efficient configurations that enhance reliability and reduce external energy dependence. The results highlight how such modular solutions can support the scalable development of sustainable energy systems across diverse regions.

Photovoltaic-thermal (PV-T) collectors integrate solar thermal and photovoltaic technologies into a single system, enabling simultaneous production of electricity and heat. The efficiency of PV-T collectors is directly linked to effective heat transfer through the system layers, which impacts overall thermal and electrical performance. This study evaluates the role of adhesives, the attachment media between the photovoltaic (PV) panel and the heat exchanger (HX); and insulating materials, which constitute the back-side of the PV-T panel, in optimizing heat transfer and improving the efficiency of PV-T collectors.

In 2021, Crete island was linked for the first time to the Hellenic mainland power grid through a composite submarine and underground cable system. This connection, known as the Crete-Peloponnese interconnection, is the longest submarine/underground alternating current cable interconnection in the world (almost 178 km). It is well known that as the transmission distance increases, the power transfer capacity is reduced due to cable losses and the higher absorbed reactive power. These losses are typically calculated using analytical and numerical approaches, which in many cases fail to account for the non-homogeneous operational conditions of submarine cables. This paper aims to overcome these limitations and evaluate the submarine cable active power losses through in situ measurements collected over a one-year period.