United Nations system including the regional commissions should view the request for comprehensive reports as an additional opportunity to provide information to Governments on the full range of their current and planned activities in the field of new and renewable sources of energy. - 3. The comprehensive reports submitted by the regional commissions in response to the above--mentioned request are reproduced in addenda to the present document. 4. All regional commissions have provided comprehensive reports: ( a) Economic Commission for Africa (ECA) ; (b) Economic Commission for Europe (ECE); (c) Economic Commission for Festern .Asia (ECHA); (d) Economic Com,--nission for Latin America (ECLA); (e) Economic and Social Commission for Asia and the Pacific (ESCAP). 
**Analysis**
The text appears to be discussing the United Nations system and its regional commissions, specifically their reports on new and renewable sources of energy. This suggests that the topic is related to sustainable development and the use of natural resources. The text does not mention specific industries, agriculture, or transportation, which leads me to believe that it is not primarily related to these categories.

**Category**
Natural resources and environment, Economic development