Currently, like in previous years, the main sources of energy for the industry and municipal management are fossil fuels such as hard coal, lignite, crude oil and natural gas. Non-renewable resources of these fuels decrease, what may result in a lack of energy supply. Their exploitation conflicts with the principle of sustainable development and can lead to irreversible geomorphological changes in the environment. The common use of fossil fuels also involves significant dust and gas emissions, including sulfur, nitrogen and carbon oxides, which is considered the main cause of the so-called global warming and acid rain. Therefore, the efforts are made on a large scale aimed at obtaining energy from renewable resources, which include: biomass, hydropower, wind energy, geothermal resources and solar energy. Biomass is a precursor and the oldest renewable energy source. It has the widest possibilities

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This paper is an attempt to present the role of authentic written texts in teaching communication in specialist language, based on the example of business language. The terms detailed here include communication, language as communication tool and specialist text. The methods of creating new terms, correlations between the sender of some content and its addressee, and the specialist knowledge held. The options of using specialist texts in business language classes were also presented. In this case such texts include information materials, interviews, certificates, contacts, agreements, statements, confirmations, invoices, orders, reports, other documents and commercial forms and commercial and official correspondence.

The paper presents examples of techniques, strategies and activities by means of which a teacher of specialist French may improve the communicative competence level of their students, i.e. the communication skills and interculture competence. The suggestions presented will help the students to acquire the knowledge and skills necessary for functioning in the contemporary multicultural society. The aim is to prepare students for professional life by teaching them the correct use of specialist French in the institutions they are going to work for in the future.