Instruction: Generate a comprehensive and generic report by comparing the parameter's present performance with its historical performance (time interval is mentioned in the query). The answer key contains relevant information about the parameter, use it to provide useful insights.
Query: How has the energy consumption of the heat enginer changed from the past two months? 
Answer key: {"Parameter": Energy Consumption, "Current Value": 2000 kWh, "Previous Value": 2200 kWh, "Percentage Change between Current Value and Previous Value": -9.1%, "Minimum Value": 1800 kWh, "Maximum Value": 2400 kWh, "Time Interval of Comparison": Past two months}
Output: Provide the entire answer in JSON format.
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