The cost of solar water heater hot water supply has obvious advantages over wind power, biomass power generation, and photovoltaic power generation. At this stage, solar water heaters should be taken seriously and promoted on a large scale, playing an important role in realizing the development goals of renewable energy.
Solar water heater has a cost advantage over electric water heaters. However, due to the high initial investment, the discount rate, living electricity price, income and other factors have an important influence on the purchasing behavior of rational consumers. Consumers’ certainty of future cost and benefit expectations and reasonable living electricity price mechanism have an important impact on solar water heaters. The application has a greater promotion effect. In terms of solar water heater promotion, the low income level of rural residents is an important constraint. Increasing farmers’ income and proper economic policies are very important for the promotion of solar water heaters in rural areas.
