C&I energy storage systems advance with modular expansion and grid services

Developments in commercial and industrial (C&I) energy storage systems (ESS) are focusing on modularity and grid integration capabilities.

Dyness has highlighted that certain C&I energy storage platforms, including the DH200F and POWER-DM series, support DC-side capacity expansion. This allows users to increase battery energy capacity and discharge duration by adding battery clusters, BDU units, and DC wiring without needing to modify the rated AC output power of the Power Conversion System (PCS) or the main AC-side architecture. This expansion is particularly useful for improving PV surplus absorption and enhancing peak-valley energy management.

At Intersolar Europe 2026, WHES introduced its P3-G3 C&I ESS, a 125 kW/261 kWh unit designed for grid ancillary services. The system can be configured into a 3 MW dispatchable platform via AC-parallel connections, or adjusted for 2-, 4-, or 8-hour backup periods through DC-parallel configurations. Managed by the WHES OS 2.0, which utilizes AI algorithms, the system is designed to participate in European energy markets through frequency containment reserves, automatic frequency restoration reserves, and spot price arbitrage.