The importance of exploiting renewable energies increases greatly when strict laws are imposed on the use of traditional energies that cause global warming. Therefore, the revitalization of the renewable energies sector depends on the legislation that countries adopt in their policy towards climate change.
Of course they do. EU directives or national laws require a share of renewable energy in total energy production. That proportion will increase over time. There are opportunities in the design of renewable energy systems (eg Energy performance of buildings), in the production of equipment that uses renewable energy sources, and in the field of installation of such equipment. For example, for the installation of photovoltaic panels and thermal solar systems in Croatia, you must have a license for such work, which means that it can be performed only by qualified persons. A good part of the renewable energy sector is still in development, so there is an opportunity for innovation and improvement of some solutions, which gives the market an advantage.
It is a very good time to start an Entrepreneurship with renewable energy. Installation prices are now lower for renewables than for conventional ones. Large investors are realizing this and are reorienting their capitals.