System Maps or Records. Each utility shall maintain up-to-date maps, plans, or records of its entire transmission and distribution system, with such other information as may be necessary to enable the utility to advise prospective customers, and others entitled to the information, as to the facilities available for serving a locality. Selecting Rate Schedule. Each utility shall assist the customer or prospective customer in selecting the most economical rate schedule. Notifying Customers. Each utility shall notify customers affected by a change in rates or schedule classification. Tariff Notice. A utility shall post a notice in a conspicuous place in each office of the utility where applications for service are received, informing the public that a copy of its tariff, as filed with the Commission, is available for inspection. A utility shall post its tariff and pending tariff changes on its website. After Commission acceptance of a tariff change, a utility shall update the tariff posted on its website not later than 3 business days after the date of acceptance. Meter Reading Instruction. Upon request, each utility shall inform its customers as to the method of reading meters. Other Information. Each utility shall furnish such additional information as the customer may reasonably request.