Work

Orbital capacity and maximum energy output of a space-based solar power constellation in Geosynchronous Earth Orbit

Year: 2025

Type: article

Abstract: As the global demand for sustainable energy solutions intensifies, the spotlight turns to innovative technologies, with Space-Based Solar Power (SBSP) emerging as a promising route. The aim of this paper is to achieve, to the best of the authors’ knowledge, the first global assessment of the maximum energy output of a network of Space-Based Solar Power stations in Earth’s orbit. First, several baseline architectures are selected based on existing literature related to Geosynchronous Earth Orbit, with a focus on key mission and system designs, as well as the expected performance of each. Second, considering the unique characteristics of these architectures, the maximum orbital capacity for a Space-Based Solar Power constellation is determined in increasingly stringent scenarios. Finally, an annual maximum energy output is evaluated for each scenario, using a power generation model, and compared against recent global energy demands. The proposed study aims at establishing a framework for the evaluation of the potential energy output achievable for planet Earth through Space-Based Solar Power systems. This will enable comparison of Space-Based Solar Power with other renewable energy systems and foster further research and discussions on this promising technology.

Source: Acta Astronautica

DOI: 10.1016/j.actaastro.2025.09.042

Authors: Armando Vittorio Atzori, Remo Proietti Zaccaria, Denis Garoli, Marcello Romano

Institutions: Politecnico di Torino, Italian Institute of Technology, University of Modena and Reggio Emilia, Technical University of Munich

Language: English

Topic: Space Satellite Systems and Control

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $3,350