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Kohler KG125R 125kW 3-Phase 120/208V Standby Generator - KG125R-QS5

Kohler KG125R 125kW 3-Phase 120/208V Standby Generator - KG125R-QS5

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SKU PES-PS-GEN-0267

Kohler KG125R 125kW 3-Phase 120/208V Standby Generator - KG125R-QS5

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

$42,137.25 USD

$ $42,137.25 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

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Unlimited lifetime support, always available.

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Specifications

Voltage 208V

Phase Three Phase

Product Category Generator

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.

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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.

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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.

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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.

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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.

Kohler KG125R 125kW 3-Phase 120/208V Standby Generator – KG125R-QS5

The Kohler KG125R 125kW 3-Phase Standby Generator (model KG125R-QS5) is a powerful and reliable solution for commercial and industrial applications requiring seamless backup power. Engineered with a high-efficiency gaseous engine and premium aluminum enclosure, this generator ensures dependable operation, quiet performance, and long-lasting protection in demanding environments.

Product Features

Powerful 125kW Output

Delivers robust performance for large facilities, critical systems, and heavy electrical loads. Designed for both natural gas and LP fuel for operational flexibility.

Three-Phase 120/208V Operation

Supports balanced 3-phase electrical systems, making it ideal for commercial, industrial, and institutional applications requiring stable voltage across multiple loads.

Quiet and Durable Aluminum Enclosure

Built with corrosion-resistant aluminum, providing superior sound attenuation and weather protection for long-term outdoor installations.

Advanced Voltage and Frequency Regulation

Integrated digital voltage regulation and governor control ensure precise, stable output suitable for sensitive electronic equipment.

Comprehensive Monitoring and Control

Equipped with Kohler’s advanced RDC2 controller, allowing remote monitoring, diagnostics, and integration with building management systems.

Specifications

Model	KG125R-QS5
Manufacturer	Kohler Power Systems
Rated Power Output	125 kW
Voltage	120/208V, 3-Phase
Frequency	60 Hz
Fuel Type	Natural Gas / LP Gas
Engine Type	Kohler KG6208, 8.0L
Enclosure Type	Aluminum, Weather-Resistant
Controller	RDC2 Digital Controller
Noise Level	67 dB(A) @ 7m
Fuel Consumption (NG)	1,400 ft³/hr @ 100% Load
Fuel Consumption (LP)	14.9 gal/hr @ 100% Load
Alternator	Brushless, Self-Excited
Warranty	5-Year Limited Warranty
Certifications	UL 2200, CSA, EPA Certified
Weight	3,950
Dimensions (L × W × H)	150 × 48 × 67

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?

Kohler KG125R 125kW 3-Phase 120/208V Standby Generator – KG125R-QS5

Product Features

Powerful 125kW Output

Delivers robust performance for large facilities, critical systems, and heavy electrical loads. Designed for both natural gas and LP fuel for operational flexibility.

Three-Phase 120/208V Operation

Supports balanced 3-phase electrical systems, making it ideal for commercial, industrial, and institutional applications requiring stable voltage across multiple loads.

Quiet and Durable Aluminum Enclosure

Built with corrosion-resistant aluminum, providing superior sound attenuation and weather protection for long-term outdoor installations.

Advanced Voltage and Frequency Regulation

Integrated digital voltage regulation and governor control ensure precise, stable output suitable for sensitive electronic equipment.

Comprehensive Monitoring and Control

Equipped with Kohler’s advanced RDC2 controller, allowing remote monitoring, diagnostics, and integration with building management systems.

Specifications

Model	KG125R-QS5
Manufacturer	Kohler Power Systems
Rated Power Output	125 kW
Voltage	120/208V, 3-Phase
Frequency	60 Hz
Fuel Type	Natural Gas / LP Gas
Engine Type	Kohler KG6208, 8.0L
Enclosure Type	Aluminum, Weather-Resistant
Controller	RDC2 Digital Controller
Noise Level	67 dB(A) @ 7m
Fuel Consumption (NG)	1,400 ft³/hr @ 100% Load
Fuel Consumption (LP)	14.9 gal/hr @ 100% Load
Alternator	Brushless, Self-Excited
Warranty	5-Year Limited Warranty
Certifications	UL 2200, CSA, EPA Certified
Weight	3,950
Dimensions (L × W × H)	150 × 48 × 67

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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.

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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.

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James Martin

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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.

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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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Highly Recommend

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Best Tech Support

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