Using Submetering Data to Improve Energy Audit Results

Energy audits are a standard tool for identifying where a building uses energy and where savings opportunities exist. When a building has submetering data available, the audit process becomes significantly more detailed and actionable.

In a bulk-metered building, an energy audit can identify total building consumption and estimate how energy is distributed across common areas, mechanical systems, and in-suite loads. These estimates rely on engineering assumptions and industry benchmarks, which may not reflect the actual conditions of your specific building.

Submetering data replaces estimates with measurements. With suite-level consumption records, an auditor can identify which suites or floors use significantly more or less electricity than average. This data reveals actual usage patterns rather than modeled assumptions.

Suite-level data can also reveal unexpected patterns. For example, consistently high overnight consumption in certain suites might indicate aging appliances, space heaters, or other equipment that could be addressed through building programs or resident communication.

For property managers planning capital improvements, submetering data helps prioritize investments. If the data shows that a significant portion of electricity consumption is driven by in-suite heating in certain units, that information helps direct retrofit spending where it will have the most impact.

If you are planning an energy audit for your submetered building, ensure your submetering provider can supply the data in a format your auditor can use. Most providers, including Voltage Vision, can provide consumption data exports for audit purposes.

Combining submetering data with common area metering gives a complete picture of building energy use. This comprehensive view is increasingly important as buildings pursue green certifications and compliance with evolving energy performance standards.