What is the efficiency of the Solis-66K-US-F-LSW-SPRT 66kW inverter?

The Solis-66K-US-F-LSW-SPRT inverter offers up to 98.8% maximum efficiency, ensuring strong energy conversion for commercial and utility-scale solar systems.

Does the Solis 66kW inverter include safety features?

Absolutely. It includes AFCI protection, rapid shutdown capability, ground-fault monitoring, and anti-islanding protection for enhanced operational safety.

Home
Best seller
Solis 66kW 4-MPPT W/Fan 3-Phase 480VAC Solar Inverter with 10 Year Standard Warranty - Solis 66K-US-F-LSW-SPRT

Solis 66kW 4-MPPT W/Fan 3-Phase 480VAC Solar Inverter with 10 Year Standard Warranty - Solis 66K-US-F-LSW-SPRT

Solis 66K US F solar inverter with LCD display, white front panel, wall mounted

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.

Trusted by 1,000s of Contractors & Installers

In Stock

SKU PES-SPS-SIV-0146

Solis 66kW 4-MPPT W/Fan 3-Phase 480VAC Solar Inverter with 10 Year Standard Warranty - Solis 66K-US-F-LSW-SPRT

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

$5,082.57 USD

$ $5,082.57 USD

Sale Sold out

Quantity

Secure Payment Methods

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

Request a Free Quote

Got Questions? We’re Here to Help!

Our support team is ready to assist you with product guidance, order details, or any questions you might have.

(888) 876-0007

Instant Live Chat

Mon-Fri 10am-6pm EST

View full details

Specifications

Phase Three Phase

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 66kW 4-MPPT Solar Inverter with 10-Year Warranty

The Solis Solis-66K-US-F-LSW-SPRT inverter is a robust solution designed for efficiency with a target efficiency of 98.8%. Tailored for various applications including commercial and utility-scale use, this inverter is compact, lightweight, and built to last in a corrosion-resistant NEMA 4X enclosure. With its advanced MPPT designs, it converts solar energy seamlessly, offering reliability and substantial energy savings.

Product Features

High Efficiency Performance

Maximize energy conversion with a 98.8% peak efficiency, ensuring optimal power output for your solar installations. This inverter's lower start-up voltage increases its effectiveness, delivering consistent energy solutions for all scales.

Innovative Design

Compact and lightweight, the Solis inverter is housed in a NEMA 4X enclosure, providing durability against environmental conditions. It supports a transformerless three-phase design with 480 Vac output, making it ideal for several installations.

Advanced MPPT Technology

This inverter features a leading-edge 4 MPPT design that adjusts quickly, within less than 5 seconds, aligning with varying sun conditions to ensure consistent energy collection and delivery.

Enhanced Safety Features

Safety is a priority with integrated AFCI protection to reduce fire risks, alongside rapid shutdown functionality conforming to stringent standards. Ground fault monitoring and anti-islanding protection further contribute to stable and safe operations.

Connectivity and Monitoring

Stay connected with the RS-485 Modbus protocol and optional Wi-Fi communication. Monitor performance online effectively, with data accessible through the Solis Mobile App for proactive management.

How It Works

The Solis inverter efficiently converts DC to AC power through its advanced MPPT and transformerless technology. Designed for both cooperative and independent operations, it ensures energy is effectively managed and delivered across various applications.

MPPT Process

The Multiple Power Point Tracking (MPPT) system quickly and accurately adjusts to capture maximum solar input, optimizing energy output for a broad range of weather conditions.

Cooling System

An intelligent redundant fan-cooling system provides consistent thermal management, ensuring the inverter operates at peak efficiency without overheating.

Display and Communication

An integral LCD display offers real-time data visualization, while RS-485 and optional wireless communication enable remote monitoring and system adjustments for efficiency.

Specifications

Max. Input Voltage	1000 V
Rated Voltage	720 V
Start-up Voltage	200 V
MPPT Voltage Range	200-850 V
Max. Input Current	4*28.5 A
Max. Output Power	66 kW
Rated Grid Voltage	3/PE, 480 V
Max. Efficiency	98.8%
*Dimensions (WHD)*	6331206374 mm
Ingress Protection	TYPE 4X

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 66kW 4-MPPT Solar Inverter with 10-Year Warranty

Product Features

High Efficiency Performance

Innovative Design

Advanced MPPT Technology

This inverter features a leading-edge 4 MPPT design that adjusts quickly, within less than 5 seconds, aligning with varying sun conditions to ensure consistent energy collection and delivery.

Enhanced Safety Features

Connectivity and Monitoring

Stay connected with the RS-485 Modbus protocol and optional Wi-Fi communication. Monitor performance online effectively, with data accessible through the Solis Mobile App for proactive management.

How It Works

MPPT Process

The Multiple Power Point Tracking (MPPT) system quickly and accurately adjusts to capture maximum solar input, optimizing energy output for a broad range of weather conditions.

Cooling System

An intelligent redundant fan-cooling system provides consistent thermal management, ensuring the inverter operates at peak efficiency without overheating.

Display and Communication

An integral LCD display offers real-time data visualization, while RS-485 and optional wireless communication enable remote monitoring and system adjustments for efficiency.

Specifications

Max. Input Voltage	1000 V
Rated Voltage	720 V
Start-up Voltage	200 V
MPPT Voltage Range	200-850 V
Max. Input Current	4*28.5 A
Max. Output Power	66 kW
Rated Grid Voltage	3/PE, 480 V
Max. Efficiency	98.8%
*Dimensions (WHD)*	6331206374 mm
Ingress Protection	TYPE 4X

//www.portlandiaelectric.supply/cdn/shopifycloud/storefront/assets/no-image-2048-a2addb12.gif

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.

Solar Power Made Easy

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

Secure Your Independence

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.

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

Coll A