Mega data centers are coming to Minnesota. Their power needs are staggering.

Facebook, Amazon and Microsoft are building Minnesota 's first mega data center in Rosemount.

If built, this crop of data centers could demand as much electricity as every home in Minnesota .

Lagging power supply on the 15 -state regional grid has spurred warnings of blackouts starting this summer .

In February , Xcel announced plans to add more than 3,000 megawatts of new wind energy by the end of the decade .

Xcel says it can still follow through with closing its two coal plants and comply with Minnesota ’s 2040 carbon-free deadline.

Some analysts are skeptical about rapidly delivering power of any sort, much less clean power, in the size and time frames that the data centers are likely to request, a deputy commissioner at the Minnesota Department of Commerce told regulators.

Electric utilities say planning when to build expensive new power plants for data centers is difficult because some never materialize.

Google pulled out of a $600 million data center in Becker announced two years earlier .

Even with the risks of data centers, many welcome the jobs and revenue they bring.