SolarEdge C&I Energy Storage System 50 kW AC‑Coupled Inverter and 102.4 kWh Battery

• Pre‑assembled, factory‑tested AC‑coupled storage cabinet for commercial and industrial sites, designed for quick installation indoors or outdoors.
• One or two (SolarEdge Cabling extension kit is included) 102.4 kWh LFP battery cabinets paired with a single 50 kW battery inverter to support self‑consumption, peak shaving, tariff optimisation and selected microgrid applications. 
  
• Built‑in fire detection, dual fire suppression and comprehensive electrical protection, backed by a 10‑year product and performance warranty.

Commercial and industrial storage 

The SolarEdge CSS–OD C&I Energy Storage System combines one or two 102.4 kWh outdoor battery cabinet (CSS‑OU‑20) with a 50 kW AC‑coupled battery inverter (PCS050) to form a turnkey storage solution for commercial and industrial sites. It is designed to integrate with SolarEdge PV systems, helping businesses reduce grid consumption, manage demand peaks and increase resilience during grid disturbances or outages (with the appropriate SolarEdge Commercial Backup Interface where required).

Key features

• AC‑coupled commercial storage: connects to an AC‑coupled SolarEdge PV system, with up to two battery cabinets per inverter and system‑level scaling towards 1 MWh.
• Optimised energy management: powered by the SolarEdge ONE optimisation platform to manage energy production, storage and consumption, supporting self‑consumption and, via future firmware updates, peak shaving and tariff optimisation.
• Microgrid‑ready architecture: supports selected microgrid applications when used with the separate SolarEdge Commercial Backup Interface, including fast switchover to backup power.
• High safety and resilience: LFP chemistry, dual‑cluster cabinet topology, integrated fire detection and double fire suppression, plus earth‑fault, leakage‑fault and surge protection.
• Single‑vendor C&I solution: PV, storage, optimisation platform, warranty and training from one manufacturer, simplifying design, commissioning and long‑term support.

Technical specifications - Battery

Technical specifications

• Cell chemistry: LFP.
• Total battery capacity: 102.4 kWh.
• Usable battery capacity: 97.28 kWh.
• Battery module total capacity: 5.12 kWh.
• Number of modules: 10 + 10 (structured in two clusters providing 1 + 1 redundancy topology).
• Maximum C‑rate (charge/discharge): 0.5 C‑rate.
• Operating voltage: 456 – 576 V DC.
• AC auxiliary input: 220 ±15 % / 50 Hz, 220 ±10 % / 60 Hz (required for battery cabinet HVAC operation).

Mechanical specifications – battery cabinet

• Battery cabinet dimensions (W × D × H): 1100 × 930 × 2380 mm.
• Battery cabinet weight: 1421 kg.
• IP protection: IP54.
• Corrosion protection: C4.
• Cooling method: built‑in HVAC.
• HVAC refrigerant / refrigerant weight: R134a / 650 g.
• Noise: 65 dBA (measured 1 metre from a single CSS‑OD battery cabinet and battery inverter).

Standard compliance – battery cabinet

• Safety: IEC 62619 including section 7.3.3.
• Ingress protection: IEC 60529.
• Transportation: UN 38.3.
• Emissions: EN / IEC 61000‑3‑3, EN / IEC 61000‑6‑2, EN / IEC 61000‑6‑4.

Environmental specifications – battery cabinet

• Operating temperature: −20 to 45 °C (power derating may apply in the range of −20 to −10 °C).
• Operating humidity: 5 – 95 % (non‑condensing).
• Maximum operating altitude: 3000 m.
• Distance to coastline: ≥1 km indoor / ≥2 km outdoor (waivers may apply for 1.5–2 km outdoor or 0.7–1 km indoor at SolarEdge’s discretion).

Warranty – battery cabinet

• System: 10 years.
• Performance: 6000 cycles or 10 years up to 70 % state of health (SoH).

Technical specifications – Inverter 

AC specifications (on‑grid / backup)

• Rated AC active power output: 50 kW.
• Maximum AC apparent output power: 55 kVA.
• Maximum continuous output current (per phase): 80 A AC.
• Maximum inverter efficiency: 97.5 %.
• AC output voltage – line to line / line to neutral (nominal): 400 / 230 V AC.
• AC output voltage – line to line / line to neutral (range): 340 – 440 / 196 – 253 V AC (applicable only in on‑grid mode; during backup the output voltage is 400 V).
• AC frequency: 50 / 60 ± 5 Hz.
• AC line: 3W + PE / 4W + PE (compatible with Delta and WYE grid types; when connected in a backup topology with the Commercial Backup Interface, only 3W + PE are used).
• Total harmonic distortion: <3 %.
• Power factor range: −1 to 1, leading or lagging.
• On‑grid to off‑grid maximum switchover time: <20 ms.
• Overall response time: ≤~1.2–1.5 s (depending on configuration: 1 × battery inverter & 1–2 × battery cabinets vs multiple inverters with multiple cabinets).

DC specifications – battery inverter

• Maximum DC input power: 55 kW.
• Maximum DC current: 55 × 2 A DC.
• Number of DC input interfaces: 2.
• Maximum paralleled battery cabinets on one battery inverter: 2 (a cabling extension kit CSS‑O1‑C‑B01‑XX is required when paralleling two cabinets).
• Recommended ratio: maintain 1:1 or 2:1 ratio of battery cabinets to battery inverter within a site to ensure optimal performance; uneven cabinet distribution can affect discharge over 2 hours.

Safety features – battery inverter

• Reverse polarity protection: yes.
• Grid monitoring: yes.
• Earth fault protection: yes.
• Earth leakage protection: yes.
• DC surge protection: Type II integrated, 20/40 kA (In/Imax).
• AC surge protection: Type III integrated, 10/20 kA (In/Imax).

Communication – battery inverter

• Communication ports: RS‑485 / CAN.

Mechanical specifications – battery inverter

• Inverter dimensions (W × D × H): 650 × 324 × 715 mm.
• Inverter weight: 68 kg.
• IP protection: IP65.
• Cooling method: air cooling.
• AC input cable cross‑section / lugs size: 25–35 mm² / M6 (copper, multi‑stranded class 6 conductors recommended).

Standard compliance – battery inverter

• Safety: IEC 62109‑1, IEC 62109‑2.
• Emissions: IEC 61000‑6‑4, IEC 61000‑3‑11, EN / IEC 61000‑3, CISPR 11.
• Grid connection: VDE AR‑N‑4105, VDE AR‑N 4110, TOR A, CEI‑016, CEI 0‑21, EN / IEC 50549‑1/10, RfG, NC RfG, PTPiREE, UNE 217001, UNE 217002, NTS631V2.1 SEPE; TED/749/2020, NTS631V1.1 SENP; TED/749/2020, G99 Type A and Type B, NRS 097‑2‑1:2017 Edition 2.1, NRS 097‑2‑1:2024 Edition 3.

SolarEdge ONE Controller (Commercial)

An on-sight manager that integrates local devices for maximized energy optimization.

• Optimizing the use of locally generated energy to reduce electricity costs, enabled by the SolarEdge ONE for C&I optimization platform.
• Local communication gateway that connects the site’s energy assets, including PV inverters, batteries, meters, and more.
• Interfaces with environmental sensors to enable in-depth analysis for O&M and energy optimization.
• PPC platform, designed to comply with grid regulations to enable safe, reliable electricity generation.
• A cyber secured gateway for external communications designed to protect against unauthorized access.
• Includes extended local data retention in case of cloud connectivity interruptions.
• Supports secure over-the-air firmware upgrades

Environmental specifications – battery inverter

• Operating temperature: −20 to 45 °C.
• Operating humidity: 5 – 95 % (non‑condensing).
• Maximum operating altitude: 3000 m.

Warranty – battery inverter

• System: 10 years (refer to SolarEdge Limited Product Warranty for details, conditions and exclusions).

Shipping and UK support

Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 2080 640335 or info@energian.co.uk for a quote.

UK expert support is available – contact Energian with any questions or support requests via phone, email or live chat, or visit our office for an in‑person consultation to review your SolarEdge C&I storage project, including PV sizing, backup requirements and DNO/Grid Code considerations.

Documents available for download

• SolarEdge CSS–OD Battery Cabinet 102.4 kWh / Battery Inverter 50 kW datasheet (CSS‑OU‑20 / PCS050).
• SolarEdge CSS–OD installation and user manual for commercial storage systems.
• SolarEdge Commercial Backup Interface datasheet and installation manual (for sites requiring backup and microgrid functionality).