Building energy monitoring is the process of measuring and recording energy use over time. It helps you understand consumption patterns, identify potential waste, and evaluate changes intended to improve efficiency.

Data loggers record measurements at set intervals, showing how energy use and building conditions change throughout the day. Energy auditors can use this information to investigate after-hours operation, compare equipment schedules with occupancy, and identify areas for further analysis.

Use a stand-alone logger when local data retrieval fits your project. Consider remote monitoring when you need access to readings between site visits or want to follow conditions across multiple locations. Check sensor compatibility, connectivity, and power requirements before choosing a system.

Collect baseline data before making the change, then repeat the measurements afterward. Compare similar operating periods and account for differences in weather, occupancy, and equipment schedules so you can better distinguish the effect of the improvement.