"In fact, his approach may be even more antique: Fixating on Canada’s tar sands — where the economics of extracting low-quality crude have driven one big company after another out of that oil patch — is roughly equivalent, in its energy logic, to planning a sperm whale expedition."
Bill McKibben, "On Pipelines, Donald Trump Looks Backward", New York Times, 2017-01-25 https://www.nytimes.com/2017/01/25/opinion/on-pipelines-donald-trump-looks-backward.html.
McKibben also points out that more people are employed in solar energy than in extracting coal, oil, and gas. When the Keystone pipeline is completed, it will only employ 35 full-time workers, most of the work being done with sensors.
I recommend reading the full article. McKibben has many more ideas that are worth quoting.