The guidebook focuses on the productive use of efficient biomass applications and solar dryers. The publication informs on available thermal energy technologies for productive purposes, with a focus on micro, small and medium enterprises in the agricultural, industrial and commercial sectors in rural areas. It provides practical guidance on how energy practitioners can effectively promote the distribution of efficient biomass and solar thermal appliances. The guide also summarizes GIZ experiences with the promotion of productive uses of thermal energy in different countries in Africa and Latin America. Each chapter offers a further reading section with recent publications on the topic.