“Dozens of dirty diesel generators”. Hardly the headlines the government was hoping for when it set up the capacity market. Yet, when the second auction came to a close this winter, it once again became clear that small scale diesel generators had ended up among those subsidised. The cost this time? £176 million on small scale diesel generation over 15 years - even more than the £109 million in the first auction. Experts have told Utility Week that without changes to the market it could be even worse in the next round.