Green co-location: the battery charges only from the PV plant
PV plant and battery are optimized and traded as one system under one contract. The battery can charge directly from the PV plant, recover clipping losses and support curtailment management. We model the shared grid connection limit and coordinate charging and discharging across the site.
Grey co-location: the battery can also charge from the grid
PV plant and battery share the grid connection but are marketed separately. Because the battery can also charge from the grid, it can be traded more freely. PV marketing stays with a direct marketer of your choice or one of our partners, and Entrix optimizes the battery.
We advise on the setup
We advise on AC or DC coupling, on sizing the battery relative to the PV plant and on how both share capacity at the grid connection point. We also walk you through the regulatory framework, from the EEG to grid fee rules. A project can start as green co-location and move to grey once a grid charging permit is granted.