The GECO project applied the Guy Le Boterf model “How to act and interact with competence in a given professional situation” methodology experimentally adapting the methodology tools which were based on the distinction between “being competent” and “acting competently” to innovative sectors of the « Green Economy ». Drawing on this methodology, the project went a step further creating new tools and developing the project partners’ existing tools. The novelty of this methodological approach does not lie in establishing job descriptions or lists of competences, but rather in highlighting what acting with competence means to a professional in his own particular work situation. In order to accelerate the desirable and likely evolution of these professions, the Le Boterf model proposes a study method of great impact which facilitates the breakdown of the likely evolutionary path of professions and their associated competences, pinpointing the effect of impact of a set of evolutionary factors on such professions. The method helps us to go the core of the matter and to pinpoint what needs developing and to activate devices of Planning Management of Occupations and Competences (GPEC) which are both simple and reliable. During this project, the partners analysed and tried out the Guy Le Boterf approach in order to create a tool kit made to improve the quality of on-going training within the companies which took part in the programme. They carried out tests and trials in innovative sectors (photovoltaic and wind power sector) which are typically prone to rapid transformation both as a result of weather conditions and in terms of the labour market or in reaction to European and Italian policies. The renewable energy sector is a “crucial” one in terms of experimentation with methodology and competence management systems and on-going and professional training. These are sectors which necessitate not only quick training solutions and timely solutions from certification systems but also modernisation of professionals and young people who become available on the job market. It is essential to propose training solutions and certification systems which meet actual and foreseeable competence needs and which take into account the foreseeable evolution of technology, regulations to be observed on energy generation and distribution, energy saving requirements and sustainable development requirements