It’s a collection of fuel cells – skinny batteries – that use oxygen and fuel to create electricity with no emissions. Fuel cells are the building blocks of the Bloom Box. … Oxygen is drawn into one side of the unit, and fuel (fossil-fuel, bio-fuel, or even solar power can be used) is fed into the other side.

How does Bloom Energy Server work?

Operating at high temperatures inside the Energy Server (‘Bloom Box’), ambient air enters the cathode side of the fuel cell. … The oxygen ions combine with the reformed fuel to produce electricity, steam, and carbon dioxide. The steam that is produced in the reaction is recycled to reform the fuel.

How much does a Bloom Energy Box cost?

Instead, his boxes are used mostly for industrial and commercial customers, costing approximately $1.2 million each. Without subsidies, they generate power at a cost of roughly 13.5 cents per kilowatt hour versus 10 cents per kwh for grid power nationally.