Generac PM4500 CO 50ST | Portlandia Electric Supply

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Unlimited lifetime support, always available.

Generac PM4500 CO 50ST

Trusted by 1,000s of Contractors & Installers

Available to Order — typically ships in 2–4 weeks

SKU PES-PS-GEN-00155

OEM Authorized Dealer Full OEM Warranty Ships in 2–4 weeks

$557.88 USD

$ $557.88 USD

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Secure checkout · Wire/ACH accepted on quotes · Freight arranged for you

Ships via ground carrier, tracked. Pallet & heavy orders go LTL freight — our team confirms freight within 1 business day.

SKU: PES-PS-GEN-00155
MPN: P008120

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Available to Order

Order today — we confirm lead time at checkout

Volume Pricing

Call 888-876-0007 for a pallet-quote

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

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Generac PM4500 CO 50ST $557.88

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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.

Generac PM4500 CO (50-State, Model P0081200)

Gas-Powered Portable Generator with COsense® Safety, Usable in All 50 States

Meet your no-frills, powerful sidekick: the PM4500 CO 50ST. It’s a sturdy open-frame generator offering 4,500 watts starting and 3,600 watts running, now compliant across all 50 U.S. states—including that particularly strict one, California—thanks to its CARB-certified emissions package.

To be crystal clear: the only real difference between “49ST” and “50ST” is where it can legally be sold. The 49ST lacks CARB compliance and can’t be sold in California; the 50ST crosses that finish line. Mechanically and functionally, it’s the same generator.

Key Features

COsense® Safety Shutdown: This generator monitors carbon monoxide levels and automatically stops if things get dangerous.
POWERDIAL™ Recoil Start: Combines Off / Run / Cold-Start in one simple dial that declutters your starting routine.
Long Runtime: A 5-gallon steel tank keeps it running up to 19 hours at 25% load and about 14 hours at 50% load.
Trusted Generac Engine: A 224 cc OHV engine with splash lubrication and low-oil shutdown ensures longevity and duty readiness.
Easy Portability: 8-inch never-flat wheels, a fold-down handle, durable steel frame—no drama moving it around.
Useful Monitoring: Features a fuel gauge and hour meter for keeping tabs on fuel level and maintenance scheduling.
Weather-Ready Outlets: Covered GFCI outlets and a twist-lock receptacle help keep dirt and moisture at bay.

Specifications

Spec Category	Details
Model	PM4500 CO (50-State) — Model P0081200
Starting Watts	4,500 W
Running Watts	3,600 W
Voltage & Frequency	120 VAC, 60 Hz; 30 A (twist-lock available)
Engine	Generac 224 cc OHV, splash-lubricated
Start Type	POWERDIAL™ Recoil (Off-Run-Cold-Start)
Fuel Tank	5 gal (18.9 L) steel tank with gauge
Runtime	~19 hr @25% load; ~14 hr @50% load
Portability	8″ never-flat wheels, fold-down handle
Protection	Covered outlets, low-oil shutdown
Monitoring	Hour meter, fuel gauge
Weight & Size	~105 lb (47.6 kg); 26.3″ L × 22.9″ W × 21.5″ H
Warranty	3-Year Residential / 90-Day Commercial
Certifications	CARB-compliant, EPA-approved (50-State)

All of the above comes directly from Powermate and Generac specifications.

What Makes It Charming

Think of it as the generator equivalent of a solid pair of sneakers—practical, unpretentious, built for mileage, with a side of safety swagger via COsense®. Heading to California? The 50ST is your passport. Otherwise, it’s the same reliable utility as its 49-state twin.

Specifications & Documents: Full specifications & datasheet for Generac PM4500 CO 50ST

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?

Generac PM4500 CO (50-State, Model P0081200)

Gas-Powered Portable Generator with COsense® Safety, Usable in All 50 States

Key Features

COsense® Safety Shutdown: This generator monitors carbon monoxide levels and automatically stops if things get dangerous.
POWERDIAL™ Recoil Start: Combines Off / Run / Cold-Start in one simple dial that declutters your starting routine.
Long Runtime: A 5-gallon steel tank keeps it running up to 19 hours at 25% load and about 14 hours at 50% load.
Trusted Generac Engine: A 224 cc OHV engine with splash lubrication and low-oil shutdown ensures longevity and duty readiness.
Easy Portability: 8-inch never-flat wheels, a fold-down handle, durable steel frame—no drama moving it around.
Useful Monitoring: Features a fuel gauge and hour meter for keeping tabs on fuel level and maintenance scheduling.
Weather-Ready Outlets: Covered GFCI outlets and a twist-lock receptacle help keep dirt and moisture at bay.

Specifications

Spec Category	Details
Model	PM4500 CO (50-State) — Model P0081200
Starting Watts	4,500 W
Running Watts	3,600 W
Voltage & Frequency	120 VAC, 60 Hz; 30 A (twist-lock available)
Engine	Generac 224 cc OHV, splash-lubricated
Start Type	POWERDIAL™ Recoil (Off-Run-Cold-Start)
Fuel Tank	5 gal (18.9 L) steel tank with gauge
Runtime	~19 hr @25% load; ~14 hr @50% load
Portability	8″ never-flat wheels, fold-down handle
Protection	Covered outlets, low-oil shutdown
Monitoring	Hour meter, fuel gauge
Weight & Size	~105 lb (47.6 kg); 26.3″ L × 22.9″ W × 21.5″ H
Warranty	3-Year Residential / 90-Day Commercial
Certifications	CARB-compliant, EPA-approved (50-State)

All of the above comes directly from Powermate and Generac specifications.

What Makes It Charming

Specifications & Documents: Full specifications & datasheet for Generac PM4500 CO 50ST

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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.