50KW Hybrid Inverter 

The ET-50K is a 50kW three-phase hybrid inverter engineered for commercial rooftops, industrial facilities, and microgrid projects. Delivering 98.1% peak conversion efficiency with IP66 outdoor-rated protection, it handles both on-grid self-consumption and full off-grid backup from a single, wall-mounted unit.With support for high-voltage batteries across a 200–800V range and up to 150% DC input oversizing, the ET-50K is the procurement-friendly choice for EPCs, distributors, and project developers who need flexibility without complexity.

Three Core Deployment Scenarios for the ET-50K

1. Commercial Rooftop & C&I Self-Consumption

Factories, warehouses, cold-storage facilities, and office complexes in the 50–500kW range are the primary market for the ET-50K. The inverter's peak-shaving capability directly reduces demand charges on commercial electricity tariffs — often the single largest component of an industrial energy bill. The parallel operation feature means the system can grow with the client's load, adding units without replacing existing infrastructure.

Key applications: peak demand reduction, TOU arbitrage, self-consumption maximisation, zero-export mode for grid-constrained sites.

2. Off-Grid and Hybrid Microgrid Projects

For remote sites — telecom towers, mining operations, agricultural stations, or island communities — the ET-50K supports full off-grid operation with automatic diesel generator synchronisation. The -35°C to +60°C operating range covers extreme climate deployments without derating concerns. Multiple units in off-grid parallel mode enable scalable power plants up to several hundred kilowatts.

Key applications: remote industrial power, DG replacement/reduction, island microgrids, agricultural pumping.

3. Battery Energy Storage Systems (BESS)

The ET-50K's 100A bidirectional battery current capability and wide 200–800V HV battery range make it well-suited for standalone BESS deployments focused on frequency response, demand response, or energy arbitrage. CAN BMS communication enables advanced battery management and state-of-charge control required in commercial energy storage contracts.

Key applications: grid services, demand response programmes, time-of-use arbitrage, backup power.

Technical Specifications

Battery Input

PV String Input

AC Output, On-Grid

AC Output, Back-up

Efficiency

General Data

Why Choose Us

Factory-Direct Pricing, Flexible MOQ

No distributor layer means competitive unit economics at every volume level. MOQ is negotiable — from pilot orders of 3–5 units to full container loads. Volume pricing tiers are available on request.

Pre-Sales Engineering Support

Our technical team reviews your project specifications — PV array layout, battery sizing, grid compliance requirements, load profiles — before you commit. This reduces costly misspecifications and RMAs downstream.

Multi-Market Certifications Included as Standard

CE, IEC/EN 62109-1/2, IEC 61000 (EMC), VDE, G99 (UK), AS/NZS 4777 (Australia), and NRS 097 (South Africa) certifications are included in the standard product. Not sold as extras.

OEM and Private-Label Services Available

Custom branding on the inverter label, packaging, and documentation is available for distributors building regional brand identity. Minimum volumes apply. Firmware parameter customisation available for large OEM programmes.

Reliable Logistics from Shenzhen

FOB Shenzhen/Guangzhou and CIF destination port Incoterms supported. Full export documentation: commercial invoice, packing list, certificate of origin, CE declaration included with every shipment. Standard lead time 2–4 weeks from confirmed order.

Warranty Backed by Documentation

5-year standard warranty with optional extension to 10 years. Full installation manual, commissioning checklist, and SEMS monitoring platform access provided for every order.

*1: In Australia, for most of the PV module, the max. Input power can achieve 2Pn, Such as the max. input power of GW50K-ET can achieve 100000W.

*2: When the input voltage is greater than 980V, the inverter will enter standby mode, and when the voltage returns to below 970V the inverter will return to normal operation.

*3: Output Voltage Range: phase voltage.

*: Please visit GoodWe website for the latest certificates.

Frequently Asked Questions 

Q: What is the minimum order quantity (MOQ) for the ET-50K?

MOQ is negotiable depending on model and destination market. We typically work with buyers starting from 3–5 units for evaluation or pilot projects, with tiered pricing available from 20 units onwards. Contact our sales team for a project-specific quote.

Q: Which battery brands are compatible with the ET-50K?

The ET-50K supports all high-voltage LFP and NMC batteries within the 200–800V range via standard CAN BMS communication. Validated brands include BYD, CATL-based stacks, Pylontech Force H, GoodWe Lynx C, and others. Custom battery compatibility testing can be arranged for OEM buyers.

Q: Can multiple ET-50K units be paralleled for larger installations?

Yes. Multiple units operate in parallel for both on-grid and off-grid modes, scaling from 50kW to 500kW+ on a single inverter platform. This simplifies spare parts management and reduces training overhead for installation teams working across large commercial portfolios.

Q: Does the backup (UPS) function require additional hardware?

Yes — UPS-level backup requires the GoodWe STS Box (Static Transfer Switch), sold separately. The STS Box enables sub-20ms load transfer time, which is essential for clients with sensitive industrial loads or zero-downtime requirements. We can supply the STS Box as a kit with the inverter.

Q: What certifications does the ET-50K carry?

Standard: CE, IEC/EN 62109-1/2, IEC 61000 EMC, VDE. Regional: G99/G98 (UK), AS/NZS 4777 (Australia), NRS 097 (South Africa). Full certificate documentation is provided with every order. Additional regional certifications available — enquire at time of order.

Q: Is OEM or private-label branding available?

Yes. We offer custom branding on inverter labels, packaging, and documentation. Minimum order quantities apply for OEM customisation. Enquire with your intended annual volume for a customisation proposal.

Q: What communication protocols does the ET-50K support?

WiFi + LAN standard; 4G optional. BMS communication via CAN; energy meter via RS485. Integrates with the SEMS cloud monitoring platform. Third-party EMS/BMS integration via Modbus is supported for commercial building management systems.

Q: What are the lead time and shipping options?

Standard lead time is 2–4 weeks from confirmed order. Sea freight (LCL or FCL), air freight, and express courier options available. FOB and CIF Incoterms supported. Full export documentation provided with every shipment.