Commercial Customers
Santee Cooper completed a months-long public comment process so that customers and others could review and provide input on the proposed changes.
On Oct. 30, 2026, the Santee Cooper Board of Directors approved an average 3.3% increase across its retail customer classes in 2027, paired with rate structure updates shaped by customer feedback. Another overall average increase of 3.1% will take effect in 2028.
Commercial Rate Changes
For commercial customers, the 2027 base rate adjustment is a 2.9% increase, and the 2028 adjustment is a 2.9% increase. Santee Cooper held several customer focus groups earlier this year, and these rates incorporate feedback from those sessions. Revised rates for small commercial customers change how demand charges are calculated to reduce the impact of isolated spikes in electricity usage on customer bills. Instead of billing demand on a single highest-hour charge regardless of time of day, the new Balanced Demand Billing will include a charge for the average of a customer’s maximum hourly use during the four highest peak periods each month. Additionally, the commercial peak window has been shortened from four hours to three, aligning business peak hours with residential and giving customers more flexibility to manage costs.
Additional Commercial Rate Information
- GA Demand charges are based on the customers’ usage from 6am-9am November-March and 3pm-6pm April-October.
- On-Peak Energy Charges for GA-LL, GB, TP, GV, GT and GT demand are 6am-9am November-March and 3pm-6pm April-October. Off-peak is all other hours.
Contact Us for Additional Information
For questions on how the 2027 and 2028 proposed base rate adjustments could affect commercial customers, contact Commercial Services at 800-804-7424 ext. 3029.