What is the Solis 1P9K-4G-US-RSS inverter?

The Solis 1P9K-4G-US-RSS is a 9kW single-phase solar inverter with 4 MPPT channels, designed for both residential and commercial applications to optimize solar energy conversion.

How does the 4-MPPT system benefit solar energy production?

The 4-MPPT system tracks multiple points on your solar array to maximize energy extraction, improving efficiency under varying sunlight conditions.

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Solis 9kw 1-Phase 4-MPPT Advanced 4G Technology Inverter - 1P9K-4G-US-RSS

Solis 9kw 1-Phase 4-MPPT Advanced 4G Technology Inverter - 1P9K-4G-US-RSS

Solis 1P9K 4G US solar inverter front view with digital display and white casing

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SKU PES-SPS-SIV-0193

Solis 9kw 1-Phase 4-MPPT Advanced 4G Technology Inverter - 1P9K-4G-US-RSS

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

$2,073.93 USD

$ $2,073.93 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.

Advanced Solis 9kW Single-Phase Inverter with 4G Technology

The Solis 9kw-4G-US-RSS inverter combines cutting-edge technology with user-friendly controls to optimize solar energy conversion. Designed to cater to both residential and commercial needs, it offers enhanced efficiency and dependable performance. Its innovative features ensure seamless integration with existing systems, making it a standout choice for sustainable energy solutions.

Product Features

Multi-Point Power Tracking

This inverter comes equipped with a 4-MPPT system, ensuring maximum energy extraction from solar panels under varying conditions. The Solis 1P9K-4G-US-RSS helps users leverage the full potential of their solar arrays.

High Efficiency Conversion

Featuring advanced 4G technology, this inverter boasts superior conversion rates and supports more energy generation, making it ideal for maximizing return on investment. Its efficiency remains consistent even during low-light periods.

Intuitive Front Panel Display

The easy-to-read front panel display allows users to monitor system performance in real-time, providing insightful data for system optimization.

Advanced Safety Features

Incorporating comprehensive safety mechanisms, including over-voltage protection and rapid shutdown functions, the system ensures both device and user safety.

Reliable Performance

Ruggedly designed for various environmental conditions, this inverter offers dependable performance with minimal maintenance, ensuring long-term durability.

How It Works

The Solis inverter operates efficiently by converting DC electricity from solar panels into AC electricity for household use. Its intelligent components, including advanced microprocessor controls, manage the energy flow for optimal efficiency and safety.

Microprocessor Control System

This component efficiently manages energy conversion, enhancing system stability and maximizing output continually.

Integrated LCD Interface

The integrated LCD interface simplifies user interaction, allowing easy access to performance metrics and configurations without external devices.

Automatic Grid Detection

This feature automatically identifies connection with the grid, ensuring smooth and uninterrupted operation even during grid outages.

Specifications

Manufacturer	Solis
Model	1P9K-4G-US-RSS
Power Output	9kW
MPPT	4
Phase	Single-Phase
Efficiency	97%
Dimensions	Height: 520mm, Width: 450mm
Weight	16kg
Operating Temperature	-25°C to +60°C
Communication Interface	RS485/WiFi

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?

Advanced Solis 9kW Single-Phase Inverter with 4G Technology

Product Features

Multi-Point Power Tracking

High Efficiency Conversion

Intuitive Front Panel Display

The easy-to-read front panel display allows users to monitor system performance in real-time, providing insightful data for system optimization.

Advanced Safety Features

Incorporating comprehensive safety mechanisms, including over-voltage protection and rapid shutdown functions, the system ensures both device and user safety.

Reliable Performance

Ruggedly designed for various environmental conditions, this inverter offers dependable performance with minimal maintenance, ensuring long-term durability.

How It Works

Microprocessor Control System

This component efficiently manages energy conversion, enhancing system stability and maximizing output continually.

Integrated LCD Interface

The integrated LCD interface simplifies user interaction, allowing easy access to performance metrics and configurations without external devices.

Automatic Grid Detection

This feature automatically identifies connection with the grid, ensuring smooth and uninterrupted operation even during grid outages.

Specifications

Manufacturer	Solis
Model	1P9K-4G-US-RSS
Power Output	9kW
MPPT	4
Phase	Single-Phase
Efficiency	97%
Dimensions	Height: 520mm, Width: 450mm
Weight	16kg
Operating Temperature	-25°C to +60°C
Communication Interface	RS485/WiFi

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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!

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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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