In this section, “residential energy retailer” includes: an electricity supplier that supplies electricity to residential retail electric customers; a gas supplier that supplies gas to residential retail gas customers; an energy salesperson; and an energy vendor. “Residential energy retailer” does not include: the Department of General Services when the Department of General Services sells energy under § 7–704.4 of this title; a community choice aggregator under § 7–510.3 of this title; an electricity supplier when supplying electricity to commercial retail electric customers; or a gas supplier that supplies gas to commercial retail gas customers. The Commission may adopt regulations to: require a residential energy retailer to post notices and disclosures required under this title on the retailer’s website: in a prominent location; using at least a certain minimum font size; and in a format approved by the Commission; and require or prohibit the use of specific language in a residential energy retailer’s marketing materials, disclaimers, disclosures, and legal documents, including requiring or prohibiting the use of specific language based on service or product type. The Commission shall require a residential energy retailer to post on the retailer’s website, in clear and unambiguous language: the terms and conditions of the residential services and products sold by the retailer; and an environmental disclosure, in a format required by the Commission, for the residential services and products sold by the retailer.