2.105—Gas supply charges.
An interstate natural gas pipeline that transports under part 284 of this chapter may include in its tariff a charge, not related to facilities, for standing ready to supply gas to sales customers in accordance with the following principles:
(b)
The pipeline must allow its sales customers to nominate levels of service freely within their firm sales entitlements or otherwise employ a mechanism for the renegotiation of levels of service at regular intervals.
(c)
The pipeline must announce prior to nominations by the customers a firm price or pricing formula for the service, and hold that price or pricing formula firm during the interval arranged in paragraph (b) of this section.
(d)
By nominating a new level of service lower than its current level, a customer has consented to any abandonment sought by the pipeline commensurate with the difference between the current level of service and the nominated level.