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GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO

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SKU PES-SPS-SIV-0706

GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO

$5,597.43 USD

$ $5,597.43 USD

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9+ sold

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

GoodWe GW50K-SMT-US — 50 kW, 480 V Three-Phase (SMT-US Series)

GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO is a high-performance three-phase inverter engineered specifically for large commercial and industrial solar installations. Designed to deliver exceptional efficiency, grid compatibility, and system intelligence, this inverter supports demanding energy environments while ensuring long-term reliability. Its advanced design makes it a strong choice for businesses seeking optimized solar power generation at scale.

Flagship 480 V C&I string inverter with up to 5 MPPTs (2 inputs each), wide 180–980 Vdc MPPT range, NEMA Type 4X enclosure, integrated AFCI and Type II SPDs, and Rapid Shutdown integrated (PVRSS). “TIGO” channel SKUs indicate the factory variant with a Tigo RSS transmitter. :contentReference[oaicite:7]{index=7}

Technical Specifications — from GoodWe SMT-US Datasheet

Input (DC)
Max. input voltage	1000 V
MPPT operating voltage range	180 ~ 980 V
Start-up voltage	200 V
Nominal input voltage	720 V
Max. input current per MPPT	30 A
Max. short-circuit current per MPPT	50 A
Number of MPP trackers	5
Strings per MPPT	2
Output (AC)
Nominal output power	50 kW
Nominal apparent power	50 kVA
Max. AC active power	55 kW
Max. AC apparent power	55 kVA
Nominal AC grid voltage	480 V, 3L/N/PE or 3L/PE
Nominal grid frequency	60 Hz
Max. output current	67 A
Power factor	~1 (adjustable 0.8 leading … 0.8 lagging)
Max. THD	< 3%
Efficiency
Max. efficiency	98.5%
CEC efficiency	98.2%
Protection & Safety
PV string current monitoring	Integrated
PV insulation resistance detection	Integrated
Residual current monitoring	Integrated
PV reverse-polarity protection	Integrated
Anti-islanding protection	Integrated
AC overcurrent / short-circuit / overvoltage	Integrated
DC switch / AC switch	Integrated
DC surge protection	Type II
AC surge protection	Type II
AFCI	Integrated (AI-driven)
Rapid Shutdown	Integrated (PVRSS per NEC 690.12 / CEC 64-218)
General
Operating temperature	−30 ~ +60 °C (derate > +45 °C)
Operating temperature (°F)	−22 ~ +140 °F (derate > +113 °F)
Relative humidity	0 ~ 100%
Max. operating altitude	4000 m (derate > 3000 m) / 13123 ft (derate > 9842.5 ft)
Cooling	Smart fan cooling
Display / Monitoring	LED, WLAN + App
Communication	RS485, Wi-Fi, USB, 4G or Wi-Fi + LAN (optional)
Protocols	Modbus-RTU (SunSpec compliant)
Noise	< 65 dB(A)
Topology	Non-isolated
Night self-consumption	< 12 W* (*<1 W without optional RSD & 24-hr load monitoring.)
Enclosure rating	NEMA Type 4X
DC connector	#12 ~ #8 AWG (Cu)
AC connector	OT (#5–3/0 AWG, Cu or Al)
Weight	70 kg (154.3 lb)
Dimensions (W × H × D)	520 × 990 × 220 mm (20.5 × 39.0 × 8.7 in)
Compliance
Certifications	UL1741 (Third Edition), IEEE 1547-2018 / 1547.1-2020 / 1547a-2020; CSA C22.2 No.0.8-19 & UL 1998 Ed.3; PVRSS per NEC-2020 690.12 & CEC-2018 Sec 64-218; IEEE 2030.5-2018

All electrical/mechanical/safety data from the official SMT-US datasheet; “Tigo Transmitter” variant (for channels listing ‘TIGO’) confirmed via distributor catalog (SMT0050-64-01P). :contentReference[oaicite:8]{index=8}

Built for High-Capacity Commercial Solar Systems

The GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO is purpose-built for 480V commercial applications, making it suitable for warehouses, factories, office complexes, and large retail facilities. With a robust 50kW output, it enables higher energy production while reducing balance-of-system costs. The inverter supports large DC input capacity, allowing installers to maximize array design flexibility and overall system performance.

Its transformerless topology improves efficiency while reducing system weight and installation complexity. This makes deployment faster and more cost-effective, especially for large rooftop and ground-mounted solar projects.

Advanced Efficiency and Power Optimization

Efficiency is a defining feature of this inverter. The system delivers high conversion efficiency, minimizing energy loss during DC-to-AC conversion. Integrated compatibility with TIGO optimization technology enhances module-level performance, allowing improved energy harvest even in partial shading or complex rooftop layouts.

The intelligent Maximum Power Point Tracking (MPPT) system ensures consistent output throughout the day by adapting to varying solar conditions. Multiple MPPT channels allow flexible panel configurations and better yield optimization across diverse installation environments.

Grid Compliance and Operational Stability

The GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO is engineered to meet strict North American grid requirements. It supports advanced grid support functions, including reactive power control, voltage ride-through, and frequency response. These capabilities ensure stable operation even during grid disturbances and help commercial systems remain compliant with evolving utility standards.

The inverter also features low total harmonic distortion (THD), contributing to cleaner power output and reduced stress on connected electrical equipment. This enhances system longevity and operational reliability for commercial users.

Smart Monitoring and System Management

Intelligent monitoring capabilities enable real-time system visibility and remote performance management. The inverter supports advanced communication protocols, allowing seamless integration with energy management systems. Operators can track performance metrics, identify faults, and optimize output without on-site intervention.

Built-in safety features such as DC reverse polarity protection, anti-islanding, and arc-fault detection further enhance operational security. These protections reduce risk, minimize downtime, and ensure compliance with safety regulations.

Durable Design for Long-Term Performance

Commercial solar installations demand durability, and this inverter delivers. The enclosure is designed to withstand harsh environmental conditions, including temperature fluctuations and dust exposure. Active cooling technology ensures optimal thermal performance, preventing overheating and maintaining consistent efficiency even under heavy load.

High-quality internal components extend service life, reducing maintenance requirements and improving overall return on investment. This reliability makes the inverter suitable for long-term commercial energy strategies.

Scalable Solution for Growing Energy Needs

As energy demands increase, scalability becomes essential. The GoodWe SMT-US Series 480V Commercial Inverter - GW50K-SMT-US TIGO supports modular system expansion, allowing businesses to scale solar capacity without replacing existing infrastructure. This future-ready design makes it an ideal choice for enterprises planning phased solar deployment.

Why Choose This Commercial Inverter?

Optimized for 480V commercial and industrial solar systems
High efficiency with advanced MPPT technology
TIGO compatibility for enhanced module-level performance
Strong grid compliance and intelligent safety features
Durable construction for long-term reliability
Scalable architecture for expanding energy demands

With its combination of performance, intelligence, and durability, this inverter stands out as a dependable solution for modern commercial solar installations.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

GoodWe GW50K-SMT-US — 50 kW, 480 V Three-Phase (SMT-US Series)

Technical Specifications — from GoodWe SMT-US Datasheet

Input (DC)
Max. input voltage	1000 V
MPPT operating voltage range	180 ~ 980 V
Start-up voltage	200 V
Nominal input voltage	720 V
Max. input current per MPPT	30 A
Max. short-circuit current per MPPT	50 A
Number of MPP trackers	5
Strings per MPPT	2
Output (AC)
Nominal output power	50 kW
Nominal apparent power	50 kVA
Max. AC active power	55 kW
Max. AC apparent power	55 kVA
Nominal AC grid voltage	480 V, 3L/N/PE or 3L/PE
Nominal grid frequency	60 Hz
Max. output current	67 A
Power factor	~1 (adjustable 0.8 leading … 0.8 lagging)
Max. THD	< 3%
Efficiency
Max. efficiency	98.5%
CEC efficiency	98.2%
Protection & Safety
PV string current monitoring	Integrated
PV insulation resistance detection	Integrated
Residual current monitoring	Integrated
PV reverse-polarity protection	Integrated
Anti-islanding protection	Integrated
AC overcurrent / short-circuit / overvoltage	Integrated
DC switch / AC switch	Integrated
DC surge protection	Type II
AC surge protection	Type II
AFCI	Integrated (AI-driven)
Rapid Shutdown	Integrated (PVRSS per NEC 690.12 / CEC 64-218)
General
Operating temperature	−30 ~ +60 °C (derate > +45 °C)
Operating temperature (°F)	−22 ~ +140 °F (derate > +113 °F)
Relative humidity	0 ~ 100%
Max. operating altitude	4000 m (derate > 3000 m) / 13123 ft (derate > 9842.5 ft)
Cooling	Smart fan cooling
Display / Monitoring	LED, WLAN + App
Communication	RS485, Wi-Fi, USB, 4G or Wi-Fi + LAN (optional)
Protocols	Modbus-RTU (SunSpec compliant)
Noise	< 65 dB(A)
Topology	Non-isolated
Night self-consumption	< 12 W* (*<1 W without optional RSD & 24-hr load monitoring.)
Enclosure rating	NEMA Type 4X
DC connector	#12 ~ #8 AWG (Cu)
AC connector	OT (#5–3/0 AWG, Cu or Al)
Weight	70 kg (154.3 lb)
Dimensions (W × H × D)	520 × 990 × 220 mm (20.5 × 39.0 × 8.7 in)
Compliance
Certifications	UL1741 (Third Edition), IEEE 1547-2018 / 1547.1-2020 / 1547a-2020; CSA C22.2 No.0.8-19 & UL 1998 Ed.3; PVRSS per NEC-2020 690.12 & CEC-2018 Sec 64-218; IEEE 2030.5-2018

Built for High-Capacity Commercial Solar Systems

Advanced Efficiency and Power Optimization

Grid Compliance and Operational Stability

Smart Monitoring and System Management

Durable Design for Long-Term Performance

Scalable Solution for Growing Energy Needs

Why Choose This Commercial Inverter?

Optimized for 480V commercial and industrial solar systems
High efficiency with advanced MPPT technology
TIGO compatibility for enhanced module-level performance
Strong grid compliance and intelligent safety features
Durable construction for long-term reliability
Scalable architecture for expanding energy demands

With its combination of performance, intelligence, and durability, this inverter stands out as a dependable solution for modern commercial solar installations.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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