FAQ: What is a GridFree Solution
Question: What is the difference between the GridFree and the Grid-tied installation?
There are basically just two possible types of installations: Grid-tied and Off-Grid.
The grid-tied installation means the inverters work in synchronization with the AC grid and supply the energy to the Grid. The off-grid installation means the inverters product energy for the consuming equipment (appliances), they do not connect with the grid, or even must not be connected with the grid (by the technical requirements). The off-grid installation usually requires batteries to provide a continuous energy supply.
The GridFree is one type of a Grid-tied installation. The only difference between the commercial grid-tied installations (typically requiring an energy producer license) is that the GridFree installation does not send any surplus energy to the outside grid. In a proper GridFree installation all energy is consumed locally. The GridFree installation is in fact reducing the consumption from the grid by providing self-produced energy.
See the explanation about GridFree instalation here
The summary: the GRIDFREE is a GRID-TIED technology that operated
WITH the GRID. It works from the the solar panels directly, with no
need for batteries.