Fueling onsite, low-carbon energy

Bloom Energy’s Bloom Box produces ample amounts of on-site power at low costs

Video: Energy innovation in action - Bloom Energy’s Bloom Box enables the possibility of affordable, low-carbon energy generated on site.

California-based Bloom Energy is developing a different approach to power generation that has already had a profound impact on the way electricity is produced around the world.

Bloom Energy’s technology relies on fuel cells, which use an electrochemical process in which oxygen and fuel (natural gas or biogas) react to produce small amounts of electricity. When these fuel cells are stacked upon each other and arranged into large modules called Bloom Energy Servers™ or "Boxes," they produce up to 200 kW of on-site power. This is enough power to meet the baseload needs of the average office building or 160 average homes.

Furthermore, this approach has the potential to reduce customers’ CO2 emissions by "40%-100% compared to the U.S. grid (depending on their fuel choice) and virtually eliminate all SOx, NOx, and other harmful smog forming particulate emissions." It also enables the possibility of affordable on-site, user-owned power generation that is as constant and reliable as a utility and provides an attractive economic payback for customers.

Bloom Energy

Credit: Bloom Energy

One Bloom Box creates enough power to meet the baseload needs of the average office building or 160 average homes.

"This kind of technology is a win-win economically and environmentally; one from which all sectors stand to benefit. The Bloom Energy Server also makes the micro-generation concept feasible. Imagine subdivisions, apartment complexes or neighborhoods with their own carbon-free (if powered by renewables), mini power plants,” said Jim Marston, Vice President of EDF’s Energy Program.

Founded in 2001, Bloom Energy sold its first Bloom Box to Google and can trace its roots to the NASA Mars space program. In the last few years, the company has lined up an impressive list of name-brand customers, including eBay, Walmart, Coca-Cola and FedEx and is rumored, according to GigaOm and others, to be "the supplier behind Apple’s planned massive 5 megawatt (MW) fuel cell farm to be built at its data center in Maiden, North Carolina." If built, this would be the nation’s biggest non-utility fuel cell installation.

In the U.S., much of the attention the Bloom Box has generated has focused on these large corporate customers. But the on-site generation concept could make its biggest impact in developing nations like India and China, where small communities and villages don’t have an electric infrastructure and new energy sources are in high demand.

The Bloom Box also has the potential to address problems here at home, with reliability concerns facing electric grids throughout the country. In Texas, where the Electric Reliability Council of Texas (ERCOT) struggles with how to add new capacity to meet growing peak demands and reduce water dependency at the same time, the Bloom Box offers an approach that can provide power at well below the peak prices paid for electricity during last year's record drought.

Innovation highlights

  • What: Bloom Energy’s Bloom Box is made up of solid oxide fuel cells (SOFCs), which efficiently and electrochemically convert fuel into low-carbon, baseload electricity.
  • Where: Bloom Energy in Sunnyvale, CA
  • Why it matters: The Bloom Box’s fuel flexibility with both fossil fuels and renewable resources helps to ensure efficient and reliable power generation with significantly lower carbon impacts.

This kind of technology is a win-win economically and environmentally.

Jim Marston Vice President, EDF energy program

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