There is one big UK powerplant that does that, Drax and it's a big controversy. It's about 5% of the UK's electricty capacity. To quote the BBC: "In response

There is one big UK powerplant that does that, Drax and it's a big controversy. It's about 5% of the UK's electricty capacity. To quote the BBC: "In response to the latest findings by the BBC, Drax admitted it has taken wood from old-growth forests. But it told Panorama that 77% of the material for its Canadian wood pellets came from sawdust and sawmill residues, with the rest coming from forestry residues and low-grade logs." So the UK government is, IMO, full of bullshit on this one but it shouldn't dampen our spirits - the news is very good excluding this one blemish.