They're still pretty squirrelly about the specifics of their commitment, though. In particular, it's not clear if it's hourly accounting (but the fact that they

They're still pretty squirrelly about the specifics of their commitment, though. In particular, it's not clear if it's hourly accounting (but the fact that they don't say so suggests to me that it isn't), and there doesn't seem to be any discussion of additionality. In other words: it might be that exactly the same amount of renewable generation, and exactly the same amount of fossil-fuel generation, are going to occur with this pledge as would have without, and this is just shuffling some numbers between columns in a spreadsheet.