What is an Energy Performance Indicator (EnPI)?
The EnPI is a regression analysis tool developed by the U.S. Department of Energy to help managers normalized baseline of energy consumption. It is used to track annual improvements, energy savings, Superior Energy Performance (SEP). The tool is designed to help many different types of organization and be able to communicate across uses such as: SEP participants, Better Plants Program, Better Buildings and Challenge Partners, other manufacturing and non-manufacturing facilities.
Regression is commonly used for estimating energy savings, and has proven to be reliable when the input data accounts for annual variation in operating conditions.
The Energy Performance Indicator tool calculates data points used in the SEP and Better Plants Programs. The tool calculates, cumulative improvement, and annual improvement. The tool can allow energy managers to aggregate plant level energy useage and metrics up to a corporate level – determining corporate energy performance compared to goals.
Examples of Energy Performance Indicators are:
- Total Current Year Primary Energy Consumed (MMBtu/year)
- Total Improvement in Energy Intensity for Baseline Year (%)
- Adjustment for Baseline Primary Energy use (MMBtu/year)
- Adjusted Baseline of Primary Energy (MMBtu/year)
- New Energy Savings for Current Year (MMBtu/year)
- Total Energy Savings since Baseline Year (MMBtu/year)
- Annual Improvement in Energy Intensity for Current Year (%)
- Total Baseline Primary Energy Consumed (MMBtu/year)