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September 2, 2021

AT&T-Bloom Boxes Phase 2 Fuel Cell Systems, US

By Carmen

The AT&T-Bloom Boxes Phase 2 Fuel Cell Systems is a 9,600kW energy storage project located in Connecticut, US.

The electro-chemical battery energy storage project uses fuel cells as its storage technology. The project was announced in 2012.


The AT&T-Bloom Boxes Phase 2 Fuel Cell Systems is owned by AT&T (100%).

The key applications of the project are on-site power and back up.

Contractors involved

AT&T is the owner. Bloom Energy is the technology provider for the project.

Additional information

In July 2011, AT&T signed an contract with Bloom Energy to deploy 7.5 MW of “Bloom Boxes” at 11 AT&T sites in California including data centers. With a second wave of fuel cell installations in California and Connecticut, AT&T facilities will produce 17.1 MW of cleaner power from Bloom Energy servers.
Once fully operational, all of AT&T’s Bloom Box installations are expected to produce more than 149 million kWh of electricity annually, enough to power more than 13,680 homes per year.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.

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