The traditional model of European energy company has been characterised by big entities that usually play a relatively important role as national champions in terms of market share, assets value, vertical integration, political influence and employment volumes, among other factors. However, last decade has seen how these big dinosaurs are losing market power in favour of new actors. On one side Russian and Chinese competitors have started showing interest in the Western European energy sector, and they are developing purchasing strategies to acquire part of the business in different countries, taking advantages of the vulnerable financial position that many of these companies suffer. On the other side having been unable to change their business models away from the focus on fossil fuels into the renewable energies sector has made traditional companies lose market share in favour of a new model of companies, smaller in terms of assets but quite focused on a market segment with a privileged institutional support, particularly thanks to the European Union targets for 2020 on renewable energy. This chapter uses the framework of green economy as the one that approaches macroeconomic issues through innovative ways, promoting green investments through the most adequate regulatory measures, and considering green energy as one of the sectors where these investments should be focused. Bearing this in mind, the paper will try to point out the existing constraints to reach the new model of development (sustainable development, as promoted by a green economy) and also the barriers that energy companies impose themselves through old fashioned strategies that don’t take into consideration the wider demands from a much larger group of stakeholders in a changing society. It will also address the changing governance framework caused by recent political events such as Brexit and the shifting EU institutional discourse towards 2030 targets.