Aldi plans to open 100 new stores, add curbside pickup to 500 stores in U.S. this year Mark Peterman/AP FILE - ALDI opens its first store in Goodyear, Arizona on Thursday, Nov. 5, 2020. This is the company's first store in Arizona and is part of its national expansion plan to become the third-largest U.S. grocery retailer by store count by the end of 2022. (Mark Peterman/AP Images for ALDI) and last updated 2021-02-10 13:13:50-05 Aldi is expanding in the U.S. On Wednesday, the supermarket chain announced that it plans to open 100 new stores in 2021 - focusing on Arizona, California, Florida, and the northeast.