Competence Network for Efficiency Technologies (KN) is an environmental protection project initiated and organized by the German Energy Agency (Dena) in China. The purpose is to integrate German professional resources in the fields of energy-efficient buildings and sustainable urban development in China, and to build a joint optimized Chinese market for German environmental energy companies and Chinese professional institutions. 
The design requirements of the KN logo project: 
1).The German abbreviation "KN" of Competence Network for Efficiency Technologies/komptenzetzwerk für effizienztechnology is the most important design element. 
2).The KN Logo is closely connected with the dena logo and entire dena visual system. 
3).The logo conforms to the attributes of energy industry, and  contains the concepts of energy conservation, emission reduction and environmental protection.

能效技术联盟（简称KN）是德国能源署（简称dena)在中国发起并组织的一个环保项目。目的是整合在华德国高能效建筑及可持续城镇发展领域专业资源，为德国环保能源企业及中国专业机构搭建一个共同优化中国市场。
 KN项目Logo的设计需求：
·      能效技术联盟/Kompetenznetzwerk für Effizienztechnologien的德文简称“KN”是最重要的设计元素。
·      KN Logo与dena Logo及整个dena的视觉体系紧密相连。
·      Logo符合能源行业属性，包含节能减排和环境保护的概念。