The service pattern for premium power supply is an important component of promoting the application of premium power supply engineering. On the basis of existing customised power technology, this paper presents a service pattern for premium power supply based on a combination of leasing and property transfer with the goal of maximizing the interests of users and investors. It considers the needs of users and the governance capacity of governance devices. The pattern includes three specific implementation plans, i.e. property rights transfer, abandonment of governance, and continued lease. An optimization model for service patterns for premium power supply is proposed, including an optimal configuration model for governance equipment and an optimization model for service patterns. Three specific implementation schemes are proposed. Through empirical analysis of the costs and benefits of users and investors under the three scenarios, this paper proves the feasibility of the combination of lease and property transfer. It is further shown that the scheme of leasing before property transfer maximizes both parties' income, which provides an optional mode for promoting the premium power supply service. This work is supported by the National Natural Science Foundation of China (No. 52077145) and the Science and Technology Project of Guangxi Power Grid Co., Ltd. (No. GXKJXM20190326).