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Rate & Tariff Information
The rates and terms of natural gas service offered by Piedmont within our three-state service area are subject to the review and approval of the respective state utility commission. The rates for each type of service offered to customers are displayed below. The tariff and service regulations for each state identify the terms, conditions, and qualifications upon which service is provided to customers.

South Carolina Nov. 2018 Rate Changes

Please select from the information below to find natural gas rates for your state:

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Tariff and Service Regulations

North Carolina
South Carolina

Margin Decoupling Tracker
The North Carolina Utilities Commission gave Piedmont authorization in November 2005, pursuant to its last general rate case (Docket No. G-9 Sub 499), to implement a decoupling mechanism. The Commission recently renewed that authorization per its October 24, 2008 order in Docket No. G-9 Sub 550. This decoupling mechanism, now called the Margin Decoupling Tracker, allows the Company to recover its margin independent of customer usage patterns. The Margin Decoupling Tracker protects customers from the potential over-recovery of margin by the Company and protects the Company from potential under-recovery of margin. It tracks margin recovery from residential customers (Rate 101) and commercial customers (Rates 102 and 152) on a monthly basis. Under this mechanism, the Company makes semi-annual adjustments, in April and November of each year, to the residential and commercial usage rates in order to refund or recover differences from the Commission-approved margin level. 
For further information about the Margin Decoupling Tracker, go to Appendix C of Piedmont's NC tariff.

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