Is Shell Energy secure? Is Shell Energy overcharging? Is Shell Energy 100% renewable? Get all your questions answered by reading the reviews here and do share your experiences also so as to help others in their decision making and the company can also take measures to improvise. You can use the social portals such as Facebook or Instagram pages for feedback or can speak with the Shell Energy customer service team at Shell Energy contact number 0330 094 5800 to discuss. Your review could help someone make the decision to switch to or from Shell Energy, and that would be amazing!