No lack of power in the area, but...
Google may not necessarily want it since it's certainly not "green" enough.
Becker (in Sherburne County) is home to SherCo, a massive coal-fired plant. Biggest property-tax payer for the city, fed with North Dakota coal arriving by the trainload (same tracks as Amtrak's "Empire Builder" service from Chicago, IL to Seattle, WA/Portland, OR).
On the other side of the Mississippi River is Monticello (Wright County), with their venerable boiling-water nuclear power plant. Whether that's "better" or "worse" with regards to pollution is debatable, but it is definitely due for a major refurbishment if not termination.
Either way, with US Highway 10 (Becker) or Interstate 94 (Monti), there is bound to be some nice data capacity nearby, not mention an entire river for water cooling (Monti Nuke uses it; not sure about SherCo).
(Me, grow up near there? Whatever gave you THAT idea?)