Gateways for monitoring solar energy installations. Thanks to their special features, they can monitor and collect all the data of the installation of a solar plant. In a single device, the gateway gathers all the indicators of the inverters, the electricity meters and the environmental sensors (sunlight intensity, temperature, wind speed, etc.) and then sends them via GPRS, Ethernet or RTC technology. The more advanced versions, in addition to monitoring, allow the analysis and modification of the installation parameters to modulate the power injected into the grid, optimize energy storage or manage self-consumption.