On May 28, 2015, the California Air Resources Board (ARB) released the results of its third joint auction for greenhouse gas (GHG) allowances between ARB and Québec's Ministère du Développement durable, de l'environnement et de la Lutte contre les changements climatiques (Ministry of Sustainable Development, Environment and the Fight against Climate Change, MDDELCC). The auction was held on May 21, 2015. The results detail the total allowances available for sale, total allowances sold, the settlement price, and other market statistics in the auction for the 2013 (MDDELCC only), 2015 and 2018 vintage allowances. All 76,931,627 metric tons of "current" (2013 and 2015) allowances that were available for sale were sold. The settlement price was $12.29 per metric ton, an 8 cent increase from the Second Joint Auction which occurred in February 2015. 9,812,000 of the 10,431,500 vintage 2018 allowances that were available for sale were sold. The settlement price for 2018 allowances was $12.10 per metric ton, the same price as the February Auction. The next joint auction is planned for August 18, 2015. The auction notice is available on the CARB Cap-and-Trade website.