Update 2014-11-15: This problem is still unsolved. Now contracts are being won with even -11 SEK/h bids for some categories of consultants.
Yesterday Computer Sweden revealed how a consultant company had managed to win a bidding competition for providing IT consultants the Swedish social security agency (Försäkringskassan). Their idea was simple, lower the price for many types of consultants to SEK 1 (sic!) / hour while maintaining normal prices for other types so that the average price was far lower than their competitors.