2003 m rugsėjo 11 d. Lietuvos Respublikos vyriausybė patvirtino „Nacionalinę darnaus vystymosi strategiją“, kurioje įsipareigojo teikti paramą atsinaujinantiems energijos šaltiniams, tarp jų ir hidroenergetikai. Žymaus elektros gamybos padidinimo iš atsinaujinančių energijos šaltinių siekia ir ES, priėmusi Elektros, pagamintos iš atsinaujinančių energijos šaltinių, skatinimo direktyvą (Directive on the promotion of the Use of Energy from Renewable Sourses; RES, 2009/28/EB). Tačiau Bendrosios vandens politikos direktyvos (Water Framework Directive; WFD, 2000/60/EC) vykdymas reikalauja pasiekti gerą būklę visuose vandens telkiniuose 2015 metais, o tai tampa kliūtis naujų hidroelektrinių statymui bei visos hidroenergetikos vystimuisi. Geriausia galima išeitis – hidroelektrinių sertifikavimas. Hidrojėgainės, kurios atitiktų aplinkosauginius reikalavimus, gautų žaliosios elektros energijos žymą. Šis darbas skirtas įvertinti užsienyje esamų žaliųjų sertifikavimo sistemų pritaikomumą Lietuvos sąlygomis. / In September 2003 Lithuanian Government approved the “National Sustainable Development Strategy“ in which committed to provide support for alternative energy sources, including hydropower. Approving Directive on the promotion of the Use of Energy from Renewable Sources, EU is seeking significant increase in electricity produced from renewable sources. However Water Framework Directive requires achieving good status in all water bodies in 2015. This is an obstacle to constructions of new hydroelectric power plants ant to whole hydropower development. Hydropower certification is the best possible solution. Hydropower plants, that will meet environmental requirements, will receive green label. This work is intending to evaluate adaptability of existing foreign green certification systems in Lithuanian conditions.

This master thesis analyses the need and the purpose of pedestrian areas (PA), their significance for the environment, social sphere and for the system of communication. Main problems, related to increasing urban traffic and congestion are described and impact on the quality of city life is identified. Possibilities for development of pedestrian area in modern cities; social, economical, ecological effect of PA. Main issues (Physical and Functional Qualities; Sociability and Public Life; Human comfort and Needs), emerging in the course of planning new PA and analyzing existing ones, evaluation of their quality and success are reviewed. On the base of posed criteria, analyze is done as regards main pedestrian territories of biggest cities` centers (Vilnius, Kaunas), proposals are made. After the analyze of theoretical and practical aspects of PA development is done, the conclusions and proposals of the thesis are provided. The thesis consists of 6 parts: introduction, automobilization in cities, PA, pedestrian areas in Lithuanian cities` centers, conclusions and proposals, list of literature. The volume of the thesis is 105 pages of text, 22 pictures, 82 bibliography sources. Appendix to the thesis are included.