ATCO LTD. (Toronto symbols ACO.X [class I non-voting] $34 and ACO.Y [class II voting] $34; Income Portfolio, Utilities sector; Shares outstanding: 115.1 million; Market cap: $3.9 billion; Price-to-sales ratio: 0.9; Dividend yield: 2.9%; TSINetwork Rating: Above Average; www.atco.com) operates power plants in Western Canada, the U.K. and Australia. It also builds temporary buildings for construction, mining and energy-exploration firms. Weak commodity prices are hurting demand for electricity and shelters, particularly in Alberta. In response, ATCO is cutting 4% of its global workforce. A new carbon tax in Alberta has also weighed on ATCO’s stock. However, most of the company’s power plants burn natural gas, not coal, which should help reduce the impact of the tax. In addition, ATCO is looking at replacing some of its current facilities with a new hydroelectric plant in northern Alberta. The class I (X) non-voting shares are more liquid than the class II (Y) voting shares. ATCO class I stock is a buy.