What types of fuel do generators take?

• <div><p>Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:</p><ul><li><p>Natural gas: $2,000–$21,000 per year </p></li><li><p>Liquid propane: $2,000–$21,000 per year</p></li><li><p>Diesel: $3,000–$20,000 per year</p></li><li><p>Gasoline: $500–$3,000 per year</p></li><li><p>Solar generator: $2,000–$25,000 per unit</p></li><li><p>Battery backup: $10,000–$25,000 per unit</p></li></ul><p></p></div>

How many days can a standby generator run continuously?

• <div><p>The <a href="https://www.angi.com/articles/how-long-can-whole-house-generator-run-continuously.htm">amount of time a standby generator can run continuously</a> is around <b>3,000 hours</b> on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.</p></div>

Can a natural gas generator work without electricity or in a power outage?

• <div><p>Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a <a href="https://www.angi.com/articles/cost-install-generator-transfer-switch.htm?entry_point_id=33797025">transfer switch</a> (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.</p></div>

What are the pros and cons of using a natural gas generator?

• <div><p>Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">installation costs</a>, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. </p></div>

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Last update on October 04, 2025

Reviewed in October 2022
Ramer Mechanical is the best service provider we have ever known. Harvey Ramer has handled the large and small jobs at our home for more than a decade. Seriously. Five stars!
Ramer Mechanical LLC
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Reviewed in March 2015
This is the third time I used Rittner's Electric and, as always, completely satisfied with everything they did to assure my emergency generator was reliable. Great communication including follow up calls. Very helpful with installation ideas. Location drove up materials cost but that was my...
Rittner's Electric
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Reviewed in October 2018
Vary well, job was finished in a timely fashion, very professional, couldn't ask for better electricians. If you need an electrician these guys are the ones to have. I wouldn't call any other electrician for my electrical needs.
Mid Penn Electrical Services, Inc.
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Reviewed in September 2011
When the company came out for the estimate everything went as planned. I just decided to go a different route. During the estimate they were very thorough in explaining the process and what would happen.
CDS Home Services
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Reviewed in May 2015
They were really super good. They charged me 3 times more but forget it. It’s really reasonable. He’s excellent when he comes to me.
Wilco Electric Inc
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Reviewed in February 2013
We had a really good experience after a bit of a rocky start. Our salesperson was there for us from the first to the last. He stayed in touch, answered all my question (and there were a lot of them) and responded to my calls and email in a very timely fashion. The first day the crew was to...
JK Mechanical
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Reviewed in March 2014
Keith made this an effortless service on my part. He was here when he said he would be, was respectful, personable and professional. I called Leggett and they scheduled the service and called the morning of service to tell me Keith was on his way; He was here on time and explained everything...
Leggett Inc
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Reviewed in November 2014
This was the first time I'd used them and it went really well. There were no issues with scheduling. I'll have them back out soon to do more work on the unit.
Eshenaur & Son, Inc.
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