XOOM Energy does offer a referral program for its existing customers, providing them with the opportunity to earn rewards by referring new customers. When someone is referred to XOOM Energy and they successfully enroll, the referring customer may receive a reward, often in the form of account credits or other incentives. The specific details of the referral program, including eligibility requirements and the rewards offered, can vary over time. Therefore, it is advisable for customers to check the current web page of XOOM Energy for the most up-to-date information on the referral program and how it works. This can ensure that customers have access to all necessary details and can take full advantage of any available opportunities.