What is the running and starting wattage of the Generac GP18000E EFI?

The Generac GP18000E EFI delivers 18,000 running watts and 22,500 starting watts, making it ideal for heavy-duty equipment and whole-home backup.

What type of engine does the GP18000E EFI use?

It features an EFI (Electronic Fuel Injection) OHV engine, which improves fuel efficiency, enhances power stability, and reduces maintenance requirements.

Is the Generac GP18000E EFI safe for indoor use?

No. It is a portable generator for outdoor use only. However, it includes COsense® technology to alert users to unsafe carbon monoxide levels.

Can I use this generator in all U.S. states?

Yes, the GP18000E EFI is 50-state compliant, meeting emissions regulations across the United States.

How do I start the Generac GP18000E EFI?

It comes with an electric start for quick and easy activation. Manual recoil start is not required but may be available as backup.

Home
Portable Generators
Generac GP18000E EFI 50st w/ CO - 8917

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.

Generac GP18000E EFI 50st w/ CO - 8917

Trusted by 1,000s of Contractors & Installers

Available to Order — typically ships in 2–4 weeks

SKU PES-PS-GEN-00134

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

$4,388.00 USD

$ $4,388.00 USD

Sold out

Quantity

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

Ships via LTL freight — palletized, liftgate available. Our team confirms freight details within 1 business day.

SKU: PES-PS-GEN-00134
MPN: 8917

Complete the job

Compatible gear contractors pair with this item

Transfer switch Generac 6852 30-Amp 6 - 8-Circuit HomeLink Indoor Manual Transfer Switch Kit

$376.99

Mounting & pads Quick Mount Pv Mill Fixed L-foot - QM-TLF10-M1

$1.36

Secure Payment Methods

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.

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

Generac GP18000E EFI 50st w/ CO - 8917 $4,388.00

Certifications<

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 GP18000E EFI Portable Generator – 50 ST w/ CO – MPN 8917

The Generac GP18000E EFI (MPN 8917) is one of the most powerful portable generators in its class, delivering reliable EFI-based performance with improved fuel efficiency and reduced maintenance. Designed for 50-state compliance, it also features COsense® carbon monoxide monitoring for enhanced safety.

Key Features

18,000 running watts / 22,500 starting watts
EFI engine improves power stability and fuel management
Electric start for quick activation
COsense® CO monitoring
50-state compliant emissions
Reinforced steel frame and integrated lifting eye
Extended run-time with oversized fuel tank

Specifications

MPN	8917
Running Watts	18,000W
Starting Watts	22,500W
Engine Type	EFI OHV
Compliance	50-State
Start Type	Electric

Applications

Ideal for commercial operations, heavy-duty job sites, whole-home backup, and large equipment loads.

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 GP18000E EFI Portable Generator – 50 ST w/ CO – MPN 8917

Key Features

18,000 running watts / 22,500 starting watts
EFI engine improves power stability and fuel management
Electric start for quick activation
COsense® CO monitoring
50-state compliant emissions
Reinforced steel frame and integrated lifting eye
Extended run-time with oversized fuel tank

Specifications

MPN	8917
Running Watts	18,000W
Starting Watts	22,500W
Engine Type	EFI OHV
Compliance	50-State
Start Type	Electric

Applications

Ideal for commercial operations, heavy-duty job sites, whole-home backup, and large equipment loads.

//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.