The deficiency of natural resources and serious climate change issues have driven the global community’s efforts to optimize energy planning using various process integration approaches. One of the keys to optimize energy planning is through horizontal cooperation among the entities that allows internal trading of resources. The inter-entities collaboration presents a great potential to further enhance the energy planning by attaining bill savings. The attainable bill savings are due to the reduction of conventional fuels, which increases the share of renewables that allows the internal sharing among the entities – P2P (Peer-to-peer) energy sharing concept. In this paper, a linear model of P2P energy sharing is presented and used to study the possible bill savings that different entities may achieve for different collaboration scenarios. The presented P2P energy sharing optimization model allows the synergies among different potential players and identify the most favourable collaboration opportunities. The proposed approach is presented using an illustrative case study in which three players with different energy profiles are considered in both non-cooperative and P2P energy trading cooperative scenarios. The results indicated that the most advantageous coalition enables all the players to mitigate their total electricity bills by MYR 1823.43/month (0.69 % reduction as compared to the non-cooperative scheme), without having one of the players compromising and has a total 40 % of carbon emission reduction goal.