After extraordinary growth that attracted energy companies and billions in investments, the industry is in a state of financial strife, and navigating the decline has proved challenging.

Source: Oil Sands Boom Dries Up in Alberta, Taking Thousands of Jobs With it

What does this have to do with Buckingham and the ACP?  The same oil economy that is lowering energy prices, lowers return on investment everywhere in the energy market. As investments become less profitable, investors withdraw, as investors withdraw, projects dry up and blow away.

Shale gas is also quickly becoming more expensive than it is worth, this article is just another indicator of that trend