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Generator Rental

What Does a Generator Cost Per Hour to Run?

October 23, 2026

When planning for backup or temporary power, one of the most common questions is: What does a generator cost per hour to run?

There isn’t one fixed answer. A generator’s hourly operating cost depends primarily on generator size, fuel consumption, electrical load, runtime and the current price of fuel. A larger commercial generator will generally consume more fuel than a smaller unit, but load matters just as much. A generator operating near full capacity will typically burn more fuel per hour than the same generator running under a lighter load.

Runtime also adds up quickly. A generator running for a few hours during a short outage has very different fuel requirements than one operating continuously for several days. And because diesel prices change regularly, putting a single dollar figure on generator operating costs can quickly become outdated.

That’s why fuel planning is an important part of any backup-power strategy. Knowing your generator’s size, expected load and anticipated runtime can help estimate fuel consumption and reduce the risk of running low during an extended outage.

Megawattage provides commercial generator rentals, emergency power solutions and on-site fueling services throughout South Florida. When the power needs to stay on, having the right generator is only part of the plan—making sure it stays fueled is just as important.

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What Our Customers Say

4.9
Based on 18 Google reviews
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4 months ago

“Michael levandoski,this is best tech we can have in years.”

Americo Bastidas
Posted on Google
a year ago

“Great place for rental and standby generators.”

Tad Lee
Posted on Google
a year ago

“Brian was great. Very professional. Responded timely to texts. Arrived on time and did a great job with my generator. I recommend him without any hesitation.”

Sheryl Selinsky
Posted on Google
a year ago

“Very easy to schedule and very communicative. Has great knowledge of generators. Knows their stuff and super easy to work with”

J R
Posted on Google
a year ago

“Portable Generator Services is proud to have Megawattage as a trusted partner in supporting our customers. Their extensive and modern fleet of rental generators, ranging from 20KW to 3000KW, is among the largest in Florida, providing us with unparalleled resources to meet diverse client needs.”

Brian Addeo
Posted on Google
3 years ago

“The Megawattage Team has been a great partner to work with over the past 5 years. They've supported us through storms and emergencies with generator rentals and also support our needs when temporary generators are required for maintenance projects with our partners. In situations where other companies might fall short on a request, Mega steps up and always supports us to the best of their ability. I trust their team and I highly recommend Megawattage for all your generator needs!”

Kathryn Deutschler
Posted on Google
3 years ago

“Would recommend Megawattage to any company in need of a generator. They are professional, accommodating, and delivered on all their promises. After hurricane Ian, Sea Grape Bay Condo's would not be as far along in their recovery if were not for Megawattage. Truly good people!!”

Sea Grape
Posted on Google
3 years ago

“Excellent service, Dana and his team have been taking care of our company for several years now and have always been top notch, very quick response and they will do what ever it takes to make sure your business is up and your generator remains running smoothly and protected. Highly recommend them.”

Rick Medina
Posted on Google
3 years ago

“Extremely profesional and trustable. We are their customers for al least 15 years. Thankful to have them as our generator maintenance contractor.”

Beatriz Vasquez
Posted on Google
3 years ago

“Technicians are very knowledgeable and professional. Always show up within hours for emergencies.”

Richard Washington
Posted on Google
3 years ago

“We needed a generator for a special event, and Megawattage provided us with the perfect solution. Their team was prompt and reliable, and the generator worked flawlessly.”

Alexis Bogomolni
Posted on Google
3 years ago

“Service and maintenance have been excellent. The people I have dealt with are very responsive and knowledgeable”

M. Lewis Temares
Posted on Google
3 years ago

“Extremely courteous and always on time with a professional attitude. They deliver all that they say”

Edgar Arroyo
Posted on Google