As strange as it sounds, the first LEED-certified data center didn’t belong to an IT giant, not Google, not Microsoft and not even Apple. Five years ago, Fannie Mae had the distinction of having the first LEED-certified data center.

Now, half a decade later, Fannie Mae celebrating its trailblazing ways by reporting the impact of the energy efficiency features of its 247,000 square-foot Urbana Technology Center facility in Maryland. According the mortgage provider, it has slashed 35 percent in energy costs compared to a conventional data center, which translates into $1.7 million. Additionally, 13,000 gallons of municipal water per day was spared, cutting consumption by 23 million gallons during the past five years.

Needless to say, several more data center builds have since followed suit. Citigroup, for instance, has been racking up the LEED certs with a Platinum build in Frankfurt, Germany and Gold facilities in Texas and Singapore. Allstate also recently got LEED Gold for its Rochelle, Illinois facility and Facebook is aiming for the same with its new (and first) computing center in Prineville, Oregon.

The more, the merrier, I say.