@ Matt Bryant

I believe the article was quoting £780 per rack per *month*. If I'm using your example that's nearly £1M in savings per year on a 10% reduction.

Not sure I agree with your comment that an "Energy Czar" would have to board-level or dedicated, either. If you're working in an organization with 1000+ server racks, I'd sure hope you have some sort of architecture team with responsibility for reviewing technical projects, hardware and software decisions, etc.

Why can't this be a role granted to a high-level IT architect or facilities guru already in your company?