In recent years, Huailai County in the “Zhangjiakou National Renewable Energy Demonstration Zone” has promoted the construction of the Olympic corridor photovoltaic and wind power projects in an orderly manner. In 2016, Yihebao Village was installed as a pilot village to install ground source heat pumps and photovoltaic power generation panels. To realize the complementary advantages of photovoltaic power generation and ground source heat pump, and the environmental protection benefits are remarkable.
At present, 265 households in Yihebao Village use coal-source heat pump and photovoltaic power generation to save more than 1,000 tons of coal per year, and each household has increased its income by more than 2,000 yuan.