Lifecycle emissions of LNG

Geoff Styles incidentally tosses off an interesting lifecycle emissions comparison between LNG and gas moved via pipeline:

According to a recent study by Pace Consultants, the emissions from gas liquefaction, LNG transportation, and re-gasification at destination would effectively increase the lifecycle emissions from a combined-cycle power plant by roughly 22%, compared to one running on domestic (pipeline) gas. However, that result would still come in around 40% lower than the emissions from the best coal-fired power technology without CCS, and 60% less than typical coal-fired power plants.

The post is actually on the massive Gorgon gas project in Australia, which Geoff worked on in a previous life, and his comments on mega-projects are also worth reflecting on:

While a variety of factors contributed to Gorgon's requiring something like 33 years from discovery to first production, big energy projects aren't like building a supermarket or office park. Aside from the great patience these efforts require, large sums of money must be spent over a long span of time before the first dollar of revenue can be collected to recoup them. That requires the deepest of pockets and the most meticulous strategic and financial planning. Only governments and the very largest companies--with massive free cash-flow or debt capacity--can pull this off. Moreover, because of the numerous risks associated with geology, permitting and development, a project like this works best when that risk is shared by more than one party, each of which has a portfolio of sufficient size and diversity to absorb the delays that are inherent in such ventures. So while it's true that the oil Super Majors need big LNG projects to bolster reserve replacement and cash flows that are being pinched by the challenges of gaining access to large-scale oil projects in the current environment, the global supply of clean gas from such projects would be much lower, without companies on this scale to develop them.

It is a point well-taken for those who would demonize oil majors - without their ability to execute lengthy projects of incredible technical and economic complexity, our energy supplies would rapidly dwindle and Peak Oil would soon become a genuine concern.