The outdoor temperature dropped sharply, but the indoors remained warm. The indoor temperature is now over 20 degrees Celsius; I am not cold even in single-layer clothing, it is really warm.” On 10 Month 15 Day, the first day of heating in the Qinghai region, Wang Ruolan, an elderly resident aged 76 living in the Ruijing Riverside Home community in Xining City, spoke highly of the clean, environmentally friendly, convenient, and affordable benefits brought by the ground-source heat pump air conditioning heating system put into operation in the community this year.

The ground-source heat pump air conditioning heating system providing central heating to 1600 households in the Ruijing Riverside Home community has a heating area of 20 ten thousand square meters, with a monthly increase in electricity sales of 15.24 ten thousand kWh, making it one of the key electric energy substitution projects implemented by State Grid Qinghai Electric Power Company this year. This ground-source heat pump air conditioning heating system uses electrical work to convert low-grade thermal energy into high-grade thermal energy. Compared with conventional air conditioning systems, it offers advantages such as combined heating and cooling, triple functionality in one unit, convenient start-stop control, stable operation, **economy, and energy saving and environmental protection.

According to the person in charge of the Marketing Department of Xining Power Supply Company, in the electric energy substitution work for the Ruijing Riverside Home community, Xining Power Supply Company suggested adopting a combined cooling and heating mode using buried-pipe ground-source heat pump systems and surface water-source heat pump systems, taking into account factors such as regional climate characteristics, community geographical environment, and residents' hot/cold water and swimming pool usage patterns. This suggestion received active response and implementation from the community property management company. During the construction process, marketing staff provided full-process tracking services, facilitating the successful completion and commissioning of the heating project before the heating season.

"The community relies on motive power electricity to drive ground-source heat pumps for central heating. This clean, environmentally friendly, and economical thermal energy has extended the community's heating period by 15 days both before and after the national standard, allowing residents to enjoy a cozy and warm winter." According to the community property management personnel, since the heating period in the Qinghai region lasts up to 6 months, motive power electricity-driven ground-source heat pumps have significant advantages over natural gas central heating, achieving an energy saving rate of 65%.