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Verified Reviews for Generator Install pros in Lanham, MD

*The Angi rating for Generator Install companies in Lanham, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Lanham, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on July 31, 2025

Find Generator install pros in Lanham

Green's Electric
5.0(
21
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Lanham, MD and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

Electrical Service & Repairs - We guarantee your satisfaction, and we won?t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

1 neighbors recently requested a quote
Recommended by60%of homeowners
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Avatar for OC1 Electric
OC1 Electric
4.6(
51
)
Fixed Generator - Install

Serving Lanham, MD and surrounding areas

Approved

In business since 2009

Customers say: Quick response

"Me and my brother figured out the problem and fixed it ourselves. Which was so wonderful"
Response time1 day
1 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Elements Of Energy L.L.C.
Elements Of Energy L.L.C.
5.0(
23
)
Generator - Install - For Business

Serving Lanham, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"They installed a chandelier. Did a great job, no issues. Very responsive."
Kitchen and Bathroom
Fixtures & Ceiling Fans
LED Recessed lights
EV Charging Stations
Switches & Receptacles

+176

Response time1 day
Response rate93%
8 neighbors recently requested a quote
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Avatar for Bailey & Shipp Electric
Bailey & Shipp Electric
4.1(
82
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Lanham, MD and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Your technician that came out to do a yearly maintenance inspection on my generator was very nice and knowledgeable. He arrived actually earlier than expected and went right to work. I would recommend your company to anyone and it was so nice to deal with someone who acted like they enjoyed their work and wanted to please. Thank you!"
3 recessed lights
Single Recessed Light
Custom Bathroom Wiring
chandelier
Panel Replacement After

+8

Response time10 hrs
3 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Beltway Electric Services llc
Beltway Electric Services llc
4.5(
32
)
Fixed Generator - Install

Serving Lanham, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Emergency services offered

"Very professional and service was impeccable!"
Response time10 hrs
Response rate100%
6 neighbors recently requested a quote
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Technician Engineers Group
3.7(
15
)
Generator - Install - For Business

Serving Lanham, MD and surrounding areas

Approved

In business since 1996

Offers commercial services

Customers say: Quick response

"Anthony and his team do expert electrical work of all kinds. We are a 145 year old non-profit organization with buildings and grounds, and have contracted with Technician Engineers Group (TEG) on two large projects (and several small ones) over the last 15 years. One project rewired a large 125 year old building listed on the National Register of Historic Places, and one installed an extensive outdoor lighting system. In these two unusual situations TEG worked closely with us to find innovative solutions to our unique needs. We are very pleased with the results, enjoyed their can-do approach, and highly recommend this company for any electrical challenge. We found TEG reliable, honest, on time, and all the work was completed ahead of schedule."
5 neighbors recently requested a quote
Recommended by53%of homeowners
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Calvert Generator
New to Angi
Generator - Install - For Business

Serving Lanham, MD and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Calvert Generator is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.\n

Response time10 hrs
1 neighbors recently requested a quote
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Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

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 installation costs, 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. 

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Lanham, MD homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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