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The state’s emphasis on energy conservation and emission reduction has been continuously strengthened, and the use of clean energy has received great attention. As the fourth generation of power technology, fuel cell technology has developed rapidly abroad. Household fuel cells have achieved market-oriented development in Japan. In order to understand the technical applicability of household fuel cells in China, a survey on household living habits and energy consumption in cities and towns was carried out. The application of fuel cells in China was preliminarily analyzed from three aspects: the situation of family members at home, the use of domestic appliances and bathing habits.

Geothermal energy is a kind of sustainable renewable and clean resources. However, when using this energy source, there are serious problems such as excessive tail water discharge and insufficient utilization of geothermal energy. Especially in rural areas, how to use geothermal energy at low cost and efficiently is an urgent problem to be solved. The use of geothermal cascade can reduce the temperature of tail water to a certain extent, make full use of geothermal energy in each temperature section, and increase the utilization rate of geothermal energy. Based on the research status of geothermal cascade utilization at home and abroad, this paper proposes a new type of rural geothermal cascade utilization system, and attempts to analyse this system, and finds that this system can increase the utilization rate of geothermal energy at low cost.

Taking a 500,000 t/a straw briquette fuel plant in Baoding area of Hebei Province as an example, this paper establishes a life cycle energy consumption and environmental emission analysis model of straw solid fuel. Based on this model, the energy saving and greenhouse gas emission reduction potential of straw solid particles as typical briquette fuels are quantitatively analyzed. Secondly, the life cycle energy consumption and environmental emissions are analyzed. Finally, from the point of view of energy consumption and environmental emissions, the potential value of environmental impact is calculated by standardization and sensitivity analysis is carried out. The results show that the energy consumption of straw granulation stage (compression molding stage) accounts for the largest proportion in the solid particle manufacturing life cycle, reaching 32.30%. Compared with fossil fuels, solid particles have a large emission reduction advantage, which provides basic data for the utilization of straw solid granular forming fuel.