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Electricity Production and Distribution
High-tech firms focus on energy efficiency to confront climate change
High-tech firms focus on energy efficiency to confront climate change

WASHINGTON — As President Obama pushes ahead on a strategy for confronting climate change that relies heavily on energy efficiency, some Americans may see flashbacks of Jimmy Carter trying to persuade them to wear an extra sweater and turn down the thermostat. Silicon Valley sees dollar signs. Long overshadowed by wind turbines, solar panels and other fashionable machines of renewable power, energy efficiency has lately become a hot pursuit for tech entrepreneurs, big-data enthusiasts and Wall Street speculators. They have leveraged multibillion-dollar programs in several states, led by California and Massachusetts, to cultivate a booming industry. This onetime realm of scolds,...

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