ESS / BESS

About this category

ESS / BESS

Here are the energy storage systems (ESS / BESS) and everything that connects them to a PV system: LiFePO4 lithium batteries, battery modules, control boxes, racks, hybrid and off-grid inverters, and the complete PV + ESS packages.

The low-voltage (LV) batteries are Deye — RW-F16, SE-F16-C, SE-F5, SE-F5 Pro-C and SE-G5 — and the Growatt Hope 5.0L-B1 with its mounting base. For high-voltage (HV) systems there is the Deye BOS-G-Pack5.1 PRO battery module, the BOS-G-PDU-2 PRO control box and the 3U-HRACK 19" rack. With them go the Deye hybrid inverters — single-phase and three-phase, LV and HV — and the Growatt SPF 3500 ES off-grid inverter.

A battery’s capacity (kWh) and power (kW) are not picked from a catalogue: they follow when and how much electricity the site uses, which loads must keep running in a power cut, and what the PV system is. So before choosing we look at the load profile, the supply, the critical loads and the modes needed: self-consumption, backup, island mode, Zero Export or peak shaving. That way the battery is sized as part of a working system, not as a product on its own.

Power Design Engineering supplies, installs and commissions storage systems for homes, businesses and industrial sites in Kardzhali and across Bulgaria — on their own, added to an existing solar system or as part of a new one. Prices are on request.