Amid escalating global warming and the finite nature of energy resources, reevaluating fossil fuel usage while reducing greenhouse gas emissions is imperative. This study introduces and assesses a novel gas energy model integrating Ene-Farm household fuel cells, the J-Credit Scheme for monetizing emission reductions, and a Community-Based Rate Plan offering rate discounts based on collective CO₂ emissions. Utilizing an agent-based model, we simulate individual behaviors and interactions to evaluate community-wide energy consumption and CO₂ mitigation. Results indicate that combining Ene-Farm and J-Credit Scheme effectively complements Community-Based Rate Plan, fostering a mutually beneficial framework for gas companies, consumers, and the environment. Additionally, peer influence enhances emission reductions even in households without Ene-Farm installations.