Enbridge Inc. is sweetening its offer to buy all the units in Spectra Energy Partners LP it doesn't already own, raising its proposed share exchange ratio by almost 10 per cent in the all-shares transaction valued at $4.3 billion.

The United States has opened a new battleground in its trade war with the world, announcing preliminary anti-dumping duties on large-diameter welded pipe from Canada and five other countries.

Potential delays in the completion of the Keystone XL pipeline following a U.S. judge's order mean that Western Canadian oil producers could suffer current price discounts for a longer period of time, an industry spokesman says.

A $4.31-billion deal to sell Western Canadian natural gas processing plants and gathering pipelines is expected to advance Enbridge Inc.'s strategic makeover and pay down debt while funding ambitious growth plans.

A consumer boycott of American-made products and services is gathering steam as Canada counts down to this weekend's imposition of retaliatory tariffs on $16.6 billion worth of American products.

Postmedia Network Inc. will close six small-town newspapers and reduce print publication of four more, while slashing 10 per cent of its total salary outlay through staff layoffs and voluntary buyouts by the end of August.

Oil and gas producer ConocoPhillips Canada is being fined $180,000 for a 2016 pipeline leak that spilled a light petroleum liquid into a remote area of northwestern Alberta.

Analysts and observers say they remain perplexed by Finance Minister Bill Morneau’s comment last week that "plenty of investors would be interested in taking on this project," after the federal government said it would offer an "indemnity" or insurance to guarantee it is built.

Cenovus Energy Inc. says it will consider slowing development of a 50,000-barrel-per-day oilsands expansion project that it started building early last year if there isn't meaningful progress on increasing pipeline capacity out of Alberta.

Economic damage will extend far beyond the fuel budgets of British Columbia residents if Alberta successfully enacts a bill allowing it to restrict oil and gas exports, observers say.