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Sunny Tripower X 20-US 20kW 480/277V string inverter
Sunny Tripower X 20-US 20kW 480/277V string inverter
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Sunny Tripower X 20-US - 20KV 480/277 VAC 1000Vdc String Inverter 03-20-1000-2-50

Sunny Tripower X 20-US - 20KV 480/277 VAC 1000Vdc String Inverter 03-20-1000-2-50

$5,315.53 USD
$ $5,315.53 USD
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In Stock

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9+ sold

In the last 7 days

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Unlimited lifetime support, always available.

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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.

 

SMA Sunny Tripower X 20-US String Inverter

Model STP-X-20-US-50 | 20 kW | 480/277 VAC 3-Phase | 1000 Vdc

20 kW
AC Output
97.5%
CEC Efficiency
3 MPPT
Tracking

Product Overview

The Sunny Tripower X 20-US is a high-efficiency commercial 3-phase string inverter delivering 20 kW at 480/277 VAC with a 1000 Vdc PV input. It features three MPPTs (2 strings each), integrated SunSpec PLC rapid shutdown, DC AFCI, and an integrated DC disconnect. An Integrated System Manager provides monitoring and control for up to five inverters (max 150 kVA) via Sunny Portal powered by ennexOS.

Key Benefits

High Power & Efficiency: 20 kW @ 480/277 V with max AC current of 24 A and industry-leading CEC efficiency of 97.5%.

Advanced MPPT Design: 1000 Vdc system with 3 independent MPPTs, 2 strings per MPPT, 24 A usable / 37.5 A Isc per MPPT for maximum energy harvest.

Built-In Safety Features: SunSpec PLC rapid shutdown, DC AFCI, reverse-polarity protection, ground & grid monitoring; optional DC Type 2 or Type 1+2 surge protection.

Integrated System Manager: Centralized commissioning, remote parameterization, Dynamic Power Control with zero-export and Volt-VAr capabilities.

Rugged Outdoor Enclosure: Type 4X outdoor-rated enclosure with OptiCool forced-convection cooling; 59 dB(A) at 1 m for quiet operation.

Comprehensive Communications: Dual Ethernet, WLAN, Modbus (SMA & SunSpec), multi-function relay, and 6 digital inputs for flexible system integration.

How It Works

The Sunny Tripower X converts DC power from solar panels into grid-compatible 3-phase AC power. Its advanced architecture maximizes energy production while ensuring safety and reliable grid compliance.

Triple MPPT Architecture: Three independent maximum power point trackers optimize energy harvest from different string orientations or shading conditions.

Transformerless Design: High-efficiency transformerless topology reduces weight and losses while maintaining grid code compliance.

OptiCool Thermal Management: Variable-speed fans provide intelligent cooling, extending component life and maintaining efficiency across operating conditions.

Technical Specifications

Manufacturer SMA Solar Technology
Model Number STP-X-20-US-50 (MPN: 03-20-1000-2-50)
AC Output Power 20,000 W nominal / 20,000 VA max
AC Voltage / Phase 480/277 VAC, 3-Phase, 60 Hz
Max AC Current 24 A
Max DC System Voltage 1000 V
MPP Voltage Range 350–800 V
MPPT Configuration 3 MPPT, 2 strings per MPPT
Max Input Current per MPPT 24 A usable / 37.5 A Isc
CEC Efficiency 97.5%
Protection Features Integrated DC disconnect, DC AFCI, SunSpec PLC rapid shutdown
Enclosure Rating Type 4X (UL 50E), Transformerless
Cooling OptiCool Variable-Speed Fans
Dimensions (W × H × D) 28.7 × 30.0 × 10.5 in
Weight 77 lb
Communications Ethernet (2×), WLAN, SMA & SunSpec Modbus, 6 digital inputs

Certifications & Warranty

Certifications: UL 1741 SB, IEEE 1547:2018, UL 62109-1, UL 3741, FCC Part 15 Class A
Warranty: 10-Year Standard Warranty (optional extensions available)

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
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(0)
0%
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(0)
0%
(0)
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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.

 

SMA Sunny Tripower X 20-US String Inverter

Model STP-X-20-US-50 | 20 kW | 480/277 VAC 3-Phase | 1000 Vdc

20 kW
AC Output
97.5%
CEC Efficiency
3 MPPT
Tracking

Product Overview

The Sunny Tripower X 20-US is a high-efficiency commercial 3-phase string inverter delivering 20 kW at 480/277 VAC with a 1000 Vdc PV input. It features three MPPTs (2 strings each), integrated SunSpec PLC rapid shutdown, DC AFCI, and an integrated DC disconnect. An Integrated System Manager provides monitoring and control for up to five inverters (max 150 kVA) via Sunny Portal powered by ennexOS.

Key Benefits

High Power & Efficiency: 20 kW @ 480/277 V with max AC current of 24 A and industry-leading CEC efficiency of 97.5%.

Advanced MPPT Design: 1000 Vdc system with 3 independent MPPTs, 2 strings per MPPT, 24 A usable / 37.5 A Isc per MPPT for maximum energy harvest.

Built-In Safety Features: SunSpec PLC rapid shutdown, DC AFCI, reverse-polarity protection, ground & grid monitoring; optional DC Type 2 or Type 1+2 surge protection.

Integrated System Manager: Centralized commissioning, remote parameterization, Dynamic Power Control with zero-export and Volt-VAr capabilities.

Rugged Outdoor Enclosure: Type 4X outdoor-rated enclosure with OptiCool forced-convection cooling; 59 dB(A) at 1 m for quiet operation.

Comprehensive Communications: Dual Ethernet, WLAN, Modbus (SMA & SunSpec), multi-function relay, and 6 digital inputs for flexible system integration.

How It Works

The Sunny Tripower X converts DC power from solar panels into grid-compatible 3-phase AC power. Its advanced architecture maximizes energy production while ensuring safety and reliable grid compliance.

Triple MPPT Architecture: Three independent maximum power point trackers optimize energy harvest from different string orientations or shading conditions.

Transformerless Design: High-efficiency transformerless topology reduces weight and losses while maintaining grid code compliance.

OptiCool Thermal Management: Variable-speed fans provide intelligent cooling, extending component life and maintaining efficiency across operating conditions.

Technical Specifications

Manufacturer SMA Solar Technology
Model Number STP-X-20-US-50 (MPN: 03-20-1000-2-50)
AC Output Power 20,000 W nominal / 20,000 VA max
AC Voltage / Phase 480/277 VAC, 3-Phase, 60 Hz
Max AC Current 24 A
Max DC System Voltage 1000 V
MPP Voltage Range 350–800 V
MPPT Configuration 3 MPPT, 2 strings per MPPT
Max Input Current per MPPT 24 A usable / 37.5 A Isc
CEC Efficiency 97.5%
Protection Features Integrated DC disconnect, DC AFCI, SunSpec PLC rapid shutdown
Enclosure Rating Type 4X (UL 50E), Transformerless
Cooling OptiCool Variable-Speed Fans
Dimensions (W × H × D) 28.7 × 30.0 × 10.5 in
Weight 77 lb
Communications Ethernet (2×), WLAN, SMA & SunSpec Modbus, 6 digital inputs

Certifications & Warranty

Certifications: UL 1741 SB, IEEE 1547:2018, UL 62109-1, UL 3741, FCC Part 15 Class A
Warranty: 10-Year Standard Warranty (optional extensions available)

● Available | Contact us for lead time and pricing
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Prepare for Anything

From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.

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Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.

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Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.

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.

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.

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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