To anyone tracking the progress of Carbon Capture and Storage (CCS) in the U.K. over the past several years, last week's shelving of the Longannet Project in Scotland comes as little shock. This tortured process to contribute £1 billion of the government's money to a workable proposal has been playing out since 2007. Multiple bidders have fallen away until just ScottishPower and its consortium were left standing. The reasons for its demise are many, but surely the facts that large-scale carbon capture and storage is unproven and outrageously expensive must be near the top.