Analyze the energy efficiency of a residential building in San Francisco. The building has a total floor area of 1000 sq. meters, and the energy consumption data for the past two years is available. The energy consumption is mainly driven by heating, cooling, hot water, and appliance usage. Develop a recommendation report for the building owner, detailing cost-effective measures to improve the energy efficiency of the building, and estimating the potential energy savings and payback period for each measure.
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