Sungrow’s liquid‑cooled PowerTitan boosts apartment resilience for Essex Property Trust (ESS)

Resilient power for apartments: next‑gen ESS meets owner needs

Liquid‑cooled grid storage that boosts efficiency and safety is gaining attention from owners of large multifamily portfolios such as Essex Property Trust, as developers seek bankable, site‑scale solutions to support electrification, backup power and tighter grid rules. Sungrow’s newly launched PowerTitan 3.0, aimed at large European projects, exemplifies a class of energy storage systems that deliver higher round‑trip efficiency, modular deployment and advanced diagnostics that landlords can use to lower operating costs, enable EV charging and provide outage resilience for residents.

Liquid‑cooled SiC power conversion and stacked cells drive performance gains

Sungrow is deploying a fully liquid‑cooled silicon‑carbide power conversion system (SiC‑PCS) at scale for the first time, packing 450 kVA per unit into a 20‑foot container and delivering a peak conversion efficiency of 99.3% and system round‑trip efficiency of about 92%. Each container integrates a 1.78 MW PCS with 7.14 MWh of batteries, supporting 2–8 hour durations and allowing 4‑hour blocks to reach 7.2 MW/28.5 MWh. For multifamily owners, higher conversion and system efficiencies translate into more effective load shifting and lower energy bills when paired with on‑site solar or time‑of‑use tariffs.

Stacked‑cell architecture and Battery Management 2.0 reduce lifecycle risk

To scale capacity while managing degradation risks, the design uses Sungrow’s stacked‑cell architecture with 600‑Ah‑class cells (684, 661 and 640 Ah) that reduce corner stress and internal resistance and place vents and electrode terminals at opposite ends to preserve cell integrity. Battery Management 2.0 provides over 95% accuracy for lithium coating diagnostics and more than 99% precision for thermal risk warnings, which supports preventive maintenance, lender due diligence and regulatory compliance — key considerations for REITs such as Essex when assessing capital projects that must deliver predictable lifetime performance.

Modular containers simplify installation and site tailoring

The 20‑foot container approach enables owners to scale capacity in blocks, stack units where site constraints permit, and simplify logistics and interconnection processes. That modularity helps apartment operators match storage duration and power to specific needs — peak shaving, emergency backup, resident EV hubs or participating in capacity and demand‑response markets — without large single‑site civil works.

Safety, bankability and lower levelized cost of storage

Sungrow positions the PowerTitan 3.0 as reducing levelized cost of storage and improving bankability in a low‑price environment, claims that matter to property owners funding capital upgrades through debt or on‑bill financing. Advanced cooling, diagnostics and proven manufacturing practices seek to address lender and insurer concerns that often slow deployment of standalone storage at multifamily sites.