Today, almost all of civilisation is based on energy. To a large extent, energy is being continuously acquired from non-renewable raw materials deposited in the Earth’s crust. Each year, humans are reaching for deposits which contain less and less sought-after material and are increasingly difficult to extract, and that entails more money, time and energy being consumed. An alternative and infinite energy resource is renewable sources, particularly solar radiation, wind power and water movement. The Paris Agreement envisages the complete abandonment of fossil fuels by the year 2050 for all EU Member States. From a technical point of view, a complete transition to renewable energy sources (RES) is very difficult to achieve. In the case of Poland, the way to 100% RES is longer and more complex than in most EU countries. The main purpose of the conducted analysis was to thoroughly assess the possibilities for obtaining energy from inexhaustible sources as well as the benefits of various procedures in order to develop an optimal set of solutions. This concept is intended to take into account not only the prospective costs but also the prospects of developing new solutions for Poland’s energy sector. The aim of the presented study is to indicate the possibilities for the development of construction investments in the field of renewable energy sources that have an inseparable impact on spatial management. To achieve this aim, the method of research of the available literature and legislation was applied. Investments in RES are intended to have a positive effect on the climate, the development of clean technologies, new opportunities for research and technological progress, the development of a market of new services (related to management, infrastructure maintenance, energy advice and intermediation on the energy market) and spatial management.