The Calgary-based energy producer says it lost $310 million or 26 cents per share in the second quarter, compared with a year-ago profit of $2.8 billion or $2.36 per share.

"The investment climate is shifting," Trudeau said after Cenovus, Suncor were among those banned from a trillion-dollar investment portfolio.

Canadian Natural Resources Ltd, Cenovus Energy Inc , Suncor Energy Inc, and Imperial Oil Ltd were excluded from the fund due to "unacceptable greenhouse gas emissions."

Canadian Natural Resources said it is looking to cut its costs this year by $745 million compared with last year as it reported a first-quarter loss of $1.28 billion.

On Monday, Dr. Deena Hinshaw addressed concerns being brought up regarding employees being in close quarters at work camps and construction sites.

A boost in output from oilsands mines formerly operated by Shell Canada has sparked a $70-million expansion at a Shell oilsands upgrader, the president of Canadian Natural Resources Ltd. reported Thursday.

The energy company says it will now pay a quarterly dividend of 42.5 cents per share, up from its previous rate of 37.5 cents.

Adopting technologies that cut emissions can also directly save money by reducing a company's overall energy bill.

Canadian Natural Resources says its 2020 capital budget will be $250 million higher than last year as it adds about 60 drilling locations across Alberta and puts three additional rigs to work.

The company says the profit amounted to 87 cents per diluted share for the quarter ended Sept. 30 compared with a profit of $1.47 per diluted share a year ago.