fuel cells

Fuel cell energy generators outside a warehouse. They use an electro-chemical reaction to generate electricity.
Bloom Energy

Duke Energy is adding power-generating fuel cells to the list of services it provides businesses and institutions.  On Monday, the company's non-regulated subsidiary Duke Energy One announced a $250 million deal with California-based Bloom Energy to install fuel cells at more than 30 businesses in four states: California, Connecticut, Maryland and New York.