Green Mountain is the world's largest seller of electricity from non-traditional sources, such as wind and solar power, the Austin American-Statesman reported Thursday.
The contract calls for supplying the 1931 landmark, the tallest building in the world for 40 years, with 55 million kilowatt-hours of electricity each year, the newspaper said.
The deal to supply electricity for the 3 million-square-foot building "shows the segment of the market we can serve, the very large customer segment that we haven't been able to do before," said Green Mountain Chief Executive Officer Paul Thomas.
It shows "the capabilities we have now," he said.
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