To get some idea of what is and is not possible at this moment for Ezlo plug in development I took the Solar Meter plugin for Vera and made an Ezlo version of it. This plugin will create just a power meter device displaying the produced Watts and daily KWh, but it is a start.
It can be found on github here https://github.com/reneboer/ezlo-SolarMeter. Installation is manual and configuration is done in a json file as there is no programmable UI (yet?).
The readme also includes some of the things I learned writing this plugin.