The Enphase Envoy-S
The Enphase Envoy-S is an integral component of the Enphase Home Energy Solution. It operates
between Enphase Microinverters, or other PV system, and the Enphase Enlighten™ web-based monitoring
and analysis software. When used with Enphase devices, the Envoy-S can control grid management
functions and monitor PV production and site consumption. When used with non-Enphase PV systems, it
can collect production and consumption data, but it does not control grid management functions.
The Envoy-S Metered Multiphase uses precision Current Transformers (CTs) to measure PV production
from the solar main supply switch and home energy consumption from the AC mains.
How the Enphase Home Energy System Works
This integrated system maximises energy harvest, increases system reliability, and simplifies design,
installation and management.
The Enphase Microinverter converts the DC output of the PV module into grid-compliant AC power. In
addition to performing the DC to AC conversion, it maximises energy production by using a sophisticated
Maximum Power Point Tracking (MPPT) algorithm.
The Envoy-S operates as a gateway between the Enphase Microinverters and Enlighten. It collects energy
and performance data from the PV system over on-site AC power lines, and it forwards that data to
Enlighten, via the Internet, for statistical reporting. Enlighten analyzes the data collected by each
communicating device. Enlighten automatically detects any shortfall in energy production, identifies
possible causes, and suggests solutions. Enlighten constantly monitors every Enphase device connected
to the Envoy-S and is essential for system monitoring and troubleshooting.
Enlighten provides a wide range of information on system performance. You can access Enlighten on
your computer or mobile device and view current performance information at any time.
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