Who actually bought those RGGI carbon allowances, and why?

Officials did not release the identities of the winning bidders, but said that most of the allowances were sold to utilities, with financial-sector interests, as well as environmental groups, participating in the auction.

But emphasizing heat deaths over more numerous cold deaths can help fraudsters sell carbon allowances

"While 35,000 dead is a terrifyingly large number, all deaths should in principle be treated with equal concern. Yet this is not happening. When 2,000 people died from heat in the United Kingdom, it produced a public outcry that is still heard. However, the BBC recently ran a very quiet story telling us that deaths caused by cold weather in England and Wales for the past years have hovered around 25,000 each winter, casually adding that the winters of 1998–2000 saw about 47,000 cold deaths each year. The story then goes on to discuss how the government should make the cost of winter fuel economically bearable and how the majority of deaths are caused by strokes and heart attacks.

"It is remarkable that a single heat-death episode of 35,000 from many countries can get everyone up in arms, whereas cold deaths of 25,000 to 50,000 a year in just a single country pass almost unnoticed. Of course, we want to help avoid another 2,000 dying from heat in the United Kingdom. But presumably we also want to avoid many more dying from cold."