Siemens and Johnson Controls Inc. have won energy performance contracts from the US Army totaling more than $60m for solar, wind and retrofit projects to improve efficiency.The Army announced the deals last week, a month following President Obama`s call to all federal agencies to make better use of energy performance contracts - arrangements that enable efficiency projects to be paid for using savings realized from the improvements so that there are no upfront costs to taxpayers. The president directed all federal agencies to pursue at least $2bn in energy upgrades in the next two years.Siemens...

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