WE'RE HERE FOR YOU. Reach out to us with any problems or concerns, and we'll be happy to help! Have questions or comments? Fill out a form below and we'll get back with you as soon as possible! Your Name Your Email Phone Number Subject Message Send message Address: Marlboro Electric Cooperative, Inc. 254 Highway 15-401 Bypass E. Bennettsville, SC 29512 Get Directions HERE TO HELP. Phone: (800) 922-9174 Fax: (843) 479-8990 Office Hours: Monday-Friday 8 a.m. - 5 p.m. For a full list of closings, click here.