Discount Energy is located at 56 Islington St, Portsmouth, NH. This business specializes in Gas Companies. Discount Energy is open Mon, 9am-5pm; Tue, 9am-5pm; Wed, 9am-5pm; Thu, 9am-5pm; Fri, 9am-5pm; Sat, Closed; Sun, Closed and accepts Discover, Mastercard and Visa.