ECOWAS 2. REVISED TREATY In their co-operation in this field, Member States shall: a) harmonise, at the Community level, their national policies on scientific and technological research with a view to facilitating their integration into the national economic and social development plans; b) co-ordinate their programmes in applied research, research for development, scientific and technological services; c) harmonisetheirnationaltechnological developmentplans by placingspecial emphasis on indigenous and adapted technologies as well as their regulations on industrial property and transfer of technology; d) co-ordinate their positions on all scientific and technical questions forming the subject of international negotiations; e) carry out a permanent exchange of information and documentation and establish Community data networks and data banks; f) develop joint programmes for training scientific and technological cadres, including the training and further training of skilled manpower; g) promote exchanges of researchers and specialists among Member States in order to make full use of the technical skills available within the Community; and h) harmonise the educational systems in order to adapt better educational, scientific and technical training to the specific development needs of the West African environment. ARTICLE 28 ENERGY 1. Member States shall co-ordinate and harmonise their policies and programmes in the field of energy. 2. To this end, they shall: a) ensure the effective development of the energy resources of the region; b) establish appropriate co-operation mechanisms with a view to ensuring a regular supply of hydrocarbons; c) promote the development of new and renewable energy particularly solar energy in the framework of the policy of diversification of sources of energy; 20