How can the system z mainframes (z10 and forward) and software address the Big Data power drain?

How can the system z mainframes (z10 and forward) and software address the Big Data power drain?

While I selected DB2, there are many new software items for the new mainframes and there does not seem to be a forum for the others.

I am a technology journalist covering how the newer system z mainframes (z10 and newer) and applicable software (IBM InfoSphere BigInsights, Streams, and perhaps BigSheets) can address the drain on available power (in the big picture, overall) resulting from Big Data needing so much power. How can system z do this by processing Big Data while using less power, being more energy efficient?

I have searched ibm.com. While I have some reading materials, I am not sure what I have really focuses in on the topic as much as I would like to. Any assistance is much appreciated.