Abstract: In order to deeply implement the new national energy security strategy and “Carbon Peaking and Carbon Neutrality”deployment,it has become a consensus to focus on the two major tasks of “safe and stable operation of power grid”and“high proportion of clean energy consumption”,develop renewable energy and improve energy efficiency in the energy field. However,the active regulation capability of the “mains side”in the high-proportion renewable energy grid is degraded. Thus,it is imperative to develop the regulation capability of the load side. Taking a power grid in certain area as an example,the current situation of its electric heating load and clean energy is analyzed,and the adjustable ability of electric heating load is explored according to the typical load characteristic curve. Based on the source network loading storage platform,the flexible control scheme of electric heating load is put forward,which helps to achieve the goal that the electric heating load in areas where clean energy accounts for only 27.4%can participate in the safe and stable dispatching operation of power grid through demand response.