This study extensively explores the key aspects of implementing solar systems as a sustainable energy source through conceptual design. The analysis begins with the selection of solar panels, utilizing solar insolation and panel characteristics for precise dimensioning. The choice of inverters is also examined, emphasizing the relationship between the solar system's power and the inverter. The construction of the solar system and its dimensions are outlined. Financial analysis is crucial for assessing cost-effectiveness. Focusing on models of purchasing electricity generated by the solar system, scenarios are differentiated for buyers with self-production, users of self-supply facilities, and privileged producers, depicted through graphical representation highlighting key differences between models. Through the methods of Internal Rate of Return (IRR) and Net Present Value (NPV), the economic sustainability of the investment is evaluated. Graphs illustrating gradual cost reduction over time and comparisons between different buyer models are provided. Environmental impact analysis is a pivotal part of this research. CO2 emissions during the production and installation of the system are estimated and compared with emissions from conventional energy sources. The reduction of CO2 emissions through green energy production is emphasized, and the time required for carbon footprint neutrality of the solar system is calculated. This study offers profound insights into the technical, financial, and ecological aspects of applying solar systems as a sustainable alternative in the energy sector. A thoughtful approach to dimensioning, economic analysis, and environmental impact analysis collectively contribute to understanding the comprehensive benefits and challenges of utilizing solar systems in modern energy transitions.