Not having the actual study, it's hard to say, but it seems like there's some big assumptions here.
It also highlights that working from home can increase home energy use by as much as 30 per cent, and can lead to people moving further from the workplace, stretching urban sprawl and increasing pollution.
Sure, it's going to increase home electric usage. One would hope, though, that the employer doesn't keep all the equipment running - which means the majority of that is just being shifted, not created anew. As far as increasing pollution from transportation, that I don't get at all. Suppose I work from home three days a week. To spend the same amount on driving, I'd need to move two and a half times as far away. And even then, I probably wouldn't, since it would mean more highway miles and less downtown miles. How many people are going to move from a twenty-mile commute to a fifty-mile commute just because they're working from home Tuesday - Thursday this year?
And if the employer set up the work-from-home program permanently, they can get a smaller building since they know 60% or more or staff is home every non-meeting day. So then there's likely very little extra electric usage.