Lindsay Baker, founder of Comfy and currently the first head of sustainability at WeWork, is building sustainability into "everything we do."

The disruptive co-working office startup is able to "look at corporate sustainability through a fresh lens," Baker said. She's building a team, expanding her expertise and setting lofty goals to speed up not only the operations of the company, but to use the voice and power of the company to advocate for environmental issues.

Asim Haque is the chairman and CEO of the Public Utilities Commission for Ohio. There, the company regulates the energy market for the state, which includes electric, natural gas, telecoms, trucking, rail, movers and towers.

Still, electricity takes most of his time. Ohio, a fully deregulated state, has a large mix of power dynamics, as coal fades, nuclear shakes and shale gains. 

"Our customers want things to be simple. Everybody wants to meet their sustainability goals. They want to do the right thing ... in a clean and green way," said Lynda Clemmons, vice president of sustainable solutions at NRG Energy, the U.S.integrated power company. 

The company is working a new project called "Renewable Select" that combines generation and retail to bring the choice of renewables to customers who want it, but might not have as large a purchasing power as the Googles and the Microsofts, as Clemmons noted.