$20 billion is a lot of green-andto date Bank of America has invested nearly $6 billion of its $20-billion ten-year initiative to address climate change. To be sure, much of the funds will flow to lending and investing strategies, and new financial products and services, but there are notable gains being made in operations and technology as well.

The most progressive technology implementation can be found in the bank's recent announcement that it will install five Bloom Energy Servers-patented solid oxide fuel cells-to run a large 24/7 call center in Southern California. The fuel cells are brand new technology, and said to be more efficient and cleaner than older hydrogen fuel cells. They'll replace BofA's current diesel generators at the site, and help the bank reduce its dependence on the power grid.

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