Wal-Mart's $1 Billion Problem

The nation's largest retailer is also its largest private energy user. But a new green-building initiative aims to change that

Wal-Mart, the nation’s largest retailer, is also the nation’s largest private energy user. Each of the Bentonville, Arkansas–based discount giant’s 2,074 supercenters uses an average of 1.5 million kilowatts per year; combined, that’s enough to power Chile. The 3,800-store chain’s annual power bill tops out at about $1 billion.

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