The development of power sales companies needs to have diversified selection models. The new type of electricity sales company needs to meet the comfort needs of users while ensuring its own economic benefits. Therefore, this article aims to optimize the operation mode of the new electricity sales company and proposes an optimization model based on GridLAB-D simulation software. This model uses the optimization module Yalmip toolbox in MTALAB for data optimization processing. In addition, this article also combines the comfort level of residential users and the thermodynamic model of residential buildings to establish models for the distribution network of electricity sales companies under islanded and grid connected modes, taking into account the comfort level of residents. The data under the two modes are compared and analyzed. Then, a home microgrid simulation was conducted considering factors such as new energy and HVAC systems, and thermal integrity impact analysis was conducted. This confirms that the research work in this article can provide relevant reference value for building comprehensive power sales companies in the future.