After nearly reaching US$50 per barrel less than two weeks ago, oil is once again in decline. And there's no end in sight. Of course, this is bad news for Canada's major oil companies, many of which are stretched financially. But there's one notable exception to this rule: Suncor Energy Inc. ( TSX:SU )( NYSE:SU ). There's an argument that Suncor doesn't even mind lower energy prices, at least in the short term. Below are three reasons why. 1. A nice cushion While many of Suncor's peers are struggling, the energy giant is much more immune in a couple of ways. First of all, Suncor has relatively clean balance sheet. Its $9.2 billion in net debt, which is only 22% of the company's equity. By comparison, this number is roughly 60% at troubled producer Baytex Energy Corp. ( TSX:BTE )( NYSE:BTE ). Secondly, Suncor has a big downstream business, which mainly consists of the Petro-Canada gas stations.