The folks at consultancy Data Center Dynamics are now issuing a "Global eNewsletter" to supplement their Focus magazine, and for anyone interested in developments and news in the industry, I recommend signing on to their e-mail list.
I understand that DCD is expanding their written coverage, adding to their other services which include delivery of training courses and their series of global one-day data center conferences. They also have a set of bloggers who are well worth scanning.
For utility energy efficiency program managers, I recommend DCD as having high competency with efficiency and carbon impact issues. Their conference programs have been universally excellent in my opinion, and they likely hold one reasonably nearby to you, given a schedule of eight US and one Canada event annually.