Pricing and green promotion decisions in a retailer-owned dual-channel supply chain with multiple manufacturers

•A much more general retailer’s dual channel supply chain with multiple manufacturers.•Evaluate the impacts of both green promotion efforts and pricing decisions.•Derive closed-form equilibrium solutions under four common power structures.•Acting as a Stackleberg leader is more self-profitable than as a follower.•Increase in demand sensitivity and product variety can boost total profit.