Columbia Gas of Kentucky said in a news release Tuesday that it has received approval from the Kentucky Public Service Commission for a gas cost adjustment.
Effective Friday, the company's gas supply cost falls to $5.68 per 1,000 cubic feet, a 12.2 percent decrease.
The new gas supply cost will hold until the next scheduled cost adjustment, in June, according to the news release.
Natural gas distribution companies don't earn a profit on gas commodity costs. Distributors such as Columbia Gas pass the cost to customers without markup.
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Gas supply costs typically are about half of a customer's monthly bill. Besides natural gas cost, the other primary component on customer bills is delivery costs, which include line inspection, repairs and 24-hour emergency service.