The disadvantage of solar PV systems with backwatt protection is that they can only produce energy that is immediately consumed, if there is no direct consumption the system will back-regulate itself, the fluctuating consumption curve can further reduce the efficiency of PV production, thus the self-consumption factor is low. Our control system monitors the local conditions and charges the energy produced by the PV system into a battery, thus achieving continuous, efficient renewable generation and increasing the self-consumption factor.

The controlled coordination of the components of the internal electricity system (PV system, battery energy storage, consumers) will rationalise the amount and/or cost of energy taken from the public grid. In the vast majority of cases, a significant reduction can be achieved, which, taking into account the domestic conditions and other costs added to the raw energy tariff, represents a monetisable result.

The controller can allocate available power between different resources and targets based on predefined logical decision situations. It can be used to target delegated loads - according to the most common industrial communication protocols - to comply with the committed network power limit, to protect them. With its support, the locality becomes an optimal ecosystem for energy management, the maintenance of which is the main task of control.

For industrial systems, in most cases it is critical that there is no feedback from either the PV or the storage system to the public grid. Failure to comply with this requirement will result in severe penalties, and in extreme cases, the point of use may be disconnected from the grid, with serious economic consequences, not to mention asset and operational security. The SELiEN energy storage control system monitors the currents flowing to and from the grid through meters with a high sampling frequency. If necessary, it can intervene with extremely fast intervention speed.

Peak shaving is one of the most widely used energy management strategies, which aims to reduce peak loads by optimising energy use and energy storage. The critical element of the process is storage capacity and proper control, with the system storing energy when the load on the electricity grid is lower and then using the stored energy during peak periods when consumption increases. This start-up strategy reduces the amount of power tied up and the associated costs, and can also replace the grid extension process that is often necessary.

Our control system is capable of communicating with external control systems, data centres, facility monitoring units via the most common industrial communication protocols and to execute their control requests locally, not only for energy storage, but also for gas engines, PV parks.

With spot-priced energy contracts, significant costs can be saved not only through high utilisation of renewable energy sources, but also through intra-day market speculation. When using this function, the control logic determines the best price period or periods available on a given day, at which time it draws energy from the grid to the battery in order to be able to serve internal consumption needs during peak periods, avoiding grid purchase. Where possible, electricity trading can also be activated, following the same logic.