As market-available lighting and other building systems become increasingly capable of reporting data about their operating and environmental conditions, the accuracy of the reported data becomes an important consideration for use cases that rely on the data. Often, data reporting accuracy is not specified, or not well-specified. PNNL research in this area characterized the ability of networked lighting and other electrical devices to report their own energy use in a laboratory environment.
- Characterization and Analysis of the Energy-Reporting Accuracy of Connected Devices (Report, June 2020)
- Specifying Calibration of Energy-Measuring Equipment (Report and Specification Template, March 2020)
- Power Play: How Accurate is the Self-Reported Energy Consumption of Connected Devices? (Article, December 2020)
- Straight from the Device: Accurate Self-Reported Data Is a Vital Step Along the Path to Successful Connected Lighting Applications (Article, September 2020)
Research findings were leveraged in contributions to related industry voluntary standards that define performance requirements and test methods. Three standards addressing lighting energy reporting accuracy were published as ANSI standards: “C136.50–Energy Measurement for a Network Lighting Control (NLC) Device with a Locking Type Receptacle,” “C136.52–LED Drivers with Integral Energy Measurement Means,” and “C137.5–Energy Reporting Requirements for Lighting Devices.” Learn more about PNNL collaboration with industry stakeholders and standards development organizations.