Grafton Asset Management Inc., a firm that has brought foreign investment into Canada’s oil and gas industry, is looking to add alternative energy to its portfolio for the first time as it positions itself for the decline of fossil fuels. “I’m worried about the future of the industry in general,” Geeta Sankappanavar, president and chief operating officer of the Calgary-based investment firm, said in a phone interview on Tuesday. “It’s going to be a great business for a period of time, but I do look at it as a sun-setting business — one where we’ll see competition and disruption from outside our industry.” Oil and gas companies have had to cut investment and fire workers to weather the worst price crash in a generation. As crude rebounds after the Organization of the Petroleum Exporting Countries and other major exporters pledged to cut output, some producers like Cenovus Energy Inc. […]