1. What is Energy Use Intensity (EUI)?

Energy Use Intensity (EUI) is a key performance indicator that measures a building's energy efficiency. It represents the amount of energy consumed per unit area annually, typically expressed in kWh/m².

2. How Does the Calculator Work?

The calculator uses the EUI equation:

Where:

• \( E \) — Total energy consumption (kWh)
• \( A \) — Total floor area (m²)

Explanation: The equation calculates energy efficiency by dividing total energy consumption by the total floor area of the building.

3. Importance of EUI Calculation

Details: EUI is crucial for benchmarking building energy performance, identifying energy efficiency opportunities, and tracking progress in energy conservation efforts. Lower EUI values indicate better energy efficiency.

4. Using the Calculator

Tips: Enter total energy consumption in kWh and total floor area in m². Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a good EUI value?
A: EUI values vary by building type and climate. Generally, lower values indicate better energy efficiency. Benchmark against similar buildings in your region.

Q2: How often should EUI be calculated?
A: EUI should be calculated annually to track energy performance trends and measure the effectiveness of energy efficiency measures.

Q3: What factors affect EUI?
A: Building size, occupancy patterns, HVAC systems, insulation, lighting efficiency, and equipment usage all impact EUI values.

Q4: Can EUI be used for different building types?
A: Yes, but comparisons should be made between similar building types as energy usage patterns differ significantly between residential, commercial, and industrial buildings.

Q5: How can I improve my building's EUI?
A: Implement energy efficiency measures such as LED lighting, improved insulation, high-efficiency HVAC systems, and smart energy management systems.