We've been complaining about this for a number of years now. In fact, we've been complaining about it ever since Ed Miliband lit upon this policy. The manner in which the government subsidises renewable energy projects is, quite frankly, insane:

Two offshore and 15 onshore wind farms have won subsidy contracts in the Government’s first competitive green energy auction, significantly undercutting the prices that have been handed to other projects.

The results of the auction suggest consumers may be paying hundreds of millions of pounds a year too much on their energy bills because ministers previously allocated subsidies without competition, providing much higher returns to investors, critics said.

More generous subsidy schemes should now be reined in and excess subsidies clawed back, they added.

In total on Thursday ministers gave the go-ahead to 27 green energy projects, with estimated lifetime subsidy costs totalling £4bn.

Energy companies were forced to bid against each other in “reverse auctions” with the cheapest proposed projects in each category being awarded subsidies.

There's part of the insanity. For a decade and more they have not been insisting upon competitive bids. Instead, they've drawn up standards for certain technologies and then agreed a level of subsidy. That's madness.

But sadly, it gets worse. They are offering different levels of subsidy for different technologies. As we've long said that's where it tips over into insanity.

Start from where the government actually is: climate change is happening, we're causing it and we've got to do something about it. That something obviously being reducing emissions by having renewable power supplies. So, what's the best way of doing this? A series of committees deciding who gets to be the lucky recipient of a cheque? Different amounts of subsidy for different ways of achieving the same aim, reducing emissions by x tonnes?

No, of course not. The correct way to do it is to set just the one price (perhaps a subsidy, perhaps a carbon tax) and then see which technology can best achieve that goal, that reduction in emissions. If, for example, solar can meet the target better than wind then wind should have no subsidy and solar all of it. If onshore wind is better than offshore then no subsidy to offshore, all to onshore.

For we don't in fact want to have just competition among providers of one technology. We want to have competition among all providers of all potential technologies so as to find out which one solves the problem best.

Whatever one thinks about climate change itself the way that the government has been splashing around our money is simply mad. Yes, under both Labour and the Coalition.