A multistage coordinative optimization for sitting and sizing P2G plants in an integrated electricity and natural gas system

Power-to-Gas (P2G) allows for the large scale energy storage which provides a big potential to accommodate the rapid growth of the renewables. In this paper, a long-term optimization model for the co-planning of the electricity and natural gas systems is presented. The P2G Plants are optimally sited and sized in the integrated energy system. The problem model is formulated as a multi-stage integer nonlinear optimization. The objective is to minimize the investment plus operation costs by determining the optimal location, capacity, and installation time of P2G. Case studies are simulated to illustrate the proposed approach.