Can I monitor the Solis 9.0kW-4G-US-SPRT remotely?

Yes. The inverter supports Modbus RTU communication, with optional Wi-Fi for real-time system monitoring and performance tracking.

Is the Solis 1P9K-4G-US-SPRT durable for outdoor installation?

Yes. It features a NEMA 4X enclosure, making it suitable for harsh outdoor environments.

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Solis 9.0kW 1-Phase 4-MPPT String Inverter - 1P9K-4G-US-SPRT

Solis 9.0kW 1-Phase 4-MPPT String Inverter - 1P9K-4G-US-SPRT

Solis 1P9K-4G-US solar inverter with display panel, white casing, front view

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Trusted by 1,000s of Contractors & Installers

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SKU PES-SPS-SIV-0108

Solis 9.0kW 1-Phase 4-MPPT String Inverter - 1P9K-4G-US-SPRT

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$1,970.62 USD

$ $1,970.62 USD

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In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

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Specifications

Product Category Inverter

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.

Solis 9.0kW Single Phase 4-MPPT String Inverter

The Solis 1P9K-4G-US-SPRT is a powerful and efficient inverter designed to optimize energy output for residential solar setups. This advanced inverter boasts cutting-edge technology that enhances solar energy conversion, offering homeowners dependable performance and energy efficiency. Equipped with multiple MPPTs, it ensures that your solar array functions at maximum potential, even under varying light conditions.

Product Features

Superior Efficiency Rates

With a peak efficiency of 97.8%, the Solis 1P9K-4G-US-SPRT ensures that your solar system converts sunlight into usable electricity optimally. The inclusion of the target keyword Solis 1P9K-4G-US-SPRT highlights its exceptional performance.

Comprehensive Protection Mechanisms

Offering robust protections, the inverter features DC reverse-polarity and AC short circuit protection. These safety mechanisms are designed to safeguard your investment, ensuring stability and prolonged use.

Advanced Communication Options

Seamless integration is possible with Modbus RTU communication and optional Wi-Fi capabilities, providing users with real-time monitoring and enhanced control over their energy systems.

Built-in Rapid Shutdown Functionality

The Solis 1P9K-4G-US-SPRT includes a built-in rapid shutdown capability, accredited with Sunspec certification, which ensures safety during installation and maintenance.

Durable and Flexible Design

Crafted for durability, this inverter comes with a NEMA 4X enclosure, making it suitable for varying environmental conditions. Its light-weight and compact design provide easy installation and flexible positioning.

How It Works

The Solis 1P9K-4G-US-SPRT works by efficiently converting the DC power generated by solar panels into AC power for home use. Its advanced design enables adaptation to fluctuating sunlight, maintaining optimal efficiency.

Multi-Point Power Tracking (MPPT)

Each MPPT ensures that solar panels operate at their optimal power level, even when individual panels may experience shading or other factors affecting sunlight absorption.

Transformerless Inverter Design

This feature reduces weight and increases efficiency, ensuring minimal energy loss during power conversion.

Natural Cooling System

The inverter employs a natural convection cooling system, eliminating the need for fans or other active cooling methods, thereby reducing noise and maintenance.

Specifications

Max. DC Input Power	10800 watts
Operations Voltage	100-500 volts
Max. Output Power (240V)	9000 watts
Max. Output Current (240V Grid)	37.5 amps
Peak Efficiency	97.8%
CEC Weighted Efficiency	97.5%
Dimensions	342732249 mm
Weight	45.6 lbs
Noise Emission	<30dB(A)
Designed Lifetime	>20 years

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?

Solis 9.0kW Single Phase 4-MPPT String Inverter

Product Features

Superior Efficiency Rates

Comprehensive Protection Mechanisms

Advanced Communication Options

Seamless integration is possible with Modbus RTU communication and optional Wi-Fi capabilities, providing users with real-time monitoring and enhanced control over their energy systems.

Built-in Rapid Shutdown Functionality

The Solis 1P9K-4G-US-SPRT includes a built-in rapid shutdown capability, accredited with Sunspec certification, which ensures safety during installation and maintenance.

Durable and Flexible Design

How It Works

Multi-Point Power Tracking (MPPT)

Each MPPT ensures that solar panels operate at their optimal power level, even when individual panels may experience shading or other factors affecting sunlight absorption.

Transformerless Inverter Design

This feature reduces weight and increases efficiency, ensuring minimal energy loss during power conversion.

Natural Cooling System

The inverter employs a natural convection cooling system, eliminating the need for fans or other active cooling methods, thereby reducing noise and maintenance.

Specifications

Max. DC Input Power	10800 watts
Operations Voltage	100-500 volts
Max. Output Power (240V)	9000 watts
Max. Output Current (240V Grid)	37.5 amps
Peak Efficiency	97.8%
CEC Weighted Efficiency	97.5%
Dimensions	342732249 mm
Weight	45.6 lbs
Noise Emission	<30dB(A)
Designed Lifetime	>20 years

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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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