Envoy Installation and Operation
2013 Enphase Energy Inc. 141-00011 Rev 05
Other Elements in the Enphase System
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 maximizes the PV modules’ energy production by
using a sophisticated Maximum Power Point Tracking (MPPT) algorithm. This integrated system
maximizes energy harvest, increases system reliability, and simplifies design, installation and
management.
The Enphase Enlighten web-based monitoring and analysis software analyzes the data collected by each
communicating microinverter. Enlighten automatically detects any shortfall in energy production, identifies
possible causes, and suggests solutions. Enlighten constantly monitors every Enphase Microinverter
connected to the Envoy and is essential for detailed monitoring and troubleshooting.
How the Envoy Communications Gateway Works
Installation and operation of the Envoy require no specialized equipment or unique computer or
networking expertise. To the Local Area Network (LAN), the Envoy is just another host on the network,
much like a personal computer. The Envoy simply connects to the on-site router for communications with
the Enphase Enlighten monitoring and analysis website. The Envoy communicates with the individual
microinverters using the existing power lines in the residence or business.
After the Envoy is installed and completes its initial scan, it maintains an internal database of all known
Enphase Microinverters at the site it manages. At regular intervals, the Envoy polls each microinverter for
its energy data. Using the site’s broadband router, the Envoy then forwards that information to Enlighten.
The Envoy also reports any error conditions that affect it or the microinverters. You can view both energy
data and error conditions in Enlighten.
The Envoy incorporates power line and Internet communications functions. As shown in the following
diagram, one "side" of the Envoy communicates with the microinverters through power lines at the site.
The other "side" of the Envoy communicates with the Internet using a standard Ethernet cable plugged
into the broadband router.