Manchester Arndale a shopping centre, it never recovered. Stocks argues that these factors lay behind the Greater Manchester County Council's (GMC) strategic view that the county had too much retail capacity. From 1977 onwards the GMC consistently opposed further development, and would not support any before 1986. Trade increased in the early 1980s, though GMC policy against development and for retaining the relative importance of the retail centres remained. By the mid-1980s, the trend in retailing had moved from city-centres to out-of-town. The opening of Meadowhall Centre in 1990 added to the retail impact in the Sheffield city centre. The GMC was
Retail park Common in Edmonton is the largest power centre in Canada and one of the largest open-air retail developments in North America. Spread over , South Edmonton Common has more than of gross leasable area. In recent years, it has become quite common for an older shopping mall to be renovated as (or replaced entirely by) a power center, adding big-box stores, category killers and strip shopping center-type buildings to the parking and open areas, rather than to add anchors and new retail space to the existing mall facility. Puente Hills Mall and Del Amo Fashion Center in Southern California are