Open Power Quality (OPQ) is an open-source hardware and software project for low-cost, distributed power quality monitoring. Its core components are the OPQ Box hardware, the OPQ Cloud middleware, and the OPQ View visualization interface. The goal is to provide consumers, researchers, utilities, and policymakers with an independent source of power quality data, with a particular focus on scenarios such as renewable energy grid integration, microgrids, and the reliability of consumer electronics.
OPQ Box can sample power quality waveforms at around 12,000 times per second and calculate frequency, voltage, and total harmonic distortion. The device uploads low-fidelity summary data to OPQ Cloud every second. When the cloud middleware detects an anomaly, it can request high-fidelity waveform data for a selected interval within the previous ten minutes from one or more OPQ Box devices for deeper analysis. OPQ Cloud includes middleware such as Mauka and Makai, while OPQ View provides configuration, visualization, and analysis capabilities. The system can distinguish between grid-level events reported simultaneously by multiple devices and localized single-point anomalies, with configurable alerts planned for future support.
The documentation explicitly states that both OPQβs software and hardware designs are released under open-source licenses, reducing the risk of vendor lock-in. The system emphasizes extensibility and interoperability: the middleware supports a plugin architecture, OPQ View is built on Meteor, React, and React Timeseries Charts, and the data layer uses MongoDB. It also provides data model specifications, allowing other services to operate directly on the OPQ MongoDB database. The documentation also mentions Docker, port mapping, installation, and cloud migration, indicating a foundation for self-hosted deployment.
OPQ does not provide commercial subscription pricing or hosted service fees. Its cost advantage mainly comes from the hardware: the documentation states that an OPQ Box can be produced for about $75, which is 10 to 100 times cheaper than commercial power quality monitors. This makes it suitable for denser sensor deployments across floors, rooms, or communities, but it also means users need the capability to manufacture, deploy, and operate the hardware themselves.
Its strengths are that it is open source, low cost, cloud-native, supports distributed deployment, and offers a relatively open architecture for research use. Its drawbacks are that it feels more like a university research project than a mature commercial developer tool: commercial support, SLA, payment methods, and ongoing maintenance status are unclear, and some capabilities, such as alerts, are still described as design goals. It is best suited to university labs, microgrid teams, renewable energy researchers, and organizations with engineering capacity. It is not ideal for companies looking to buy an out-of-the-box commercial monitoring platform.
Based on the crawled text, it is not possible to determine access stability, payment options, or local service support in mainland China, so china_access can only be rated as unknown. For projects in China, key items to verify include access to the website, code repositories, documentation, dependency mirrors, and cloud deployment paths. Alternative options include commercial power quality monitors, local power monitoring platforms, or self-developed IoT data collection systems.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on openpowerquality.org official site.
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