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TRUSTED BY NOTTINGHAM, NH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon18
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Nottingham, NH

*The Angi rating for Generator Install companies in Nottingham, NH 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 Nottingham, NH 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 May 15, 2026

Find Generator install pros in Nottingham

Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
5.0(
15
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Nottingham, NH and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Everyone should buy a generator from the Generator Supercenter of NH. Everything was seamless, from the sales visit to the installation. Their professional crews exceeded all expectations. I would highly recommend them."
Completed 22kW Generac Standby Home Generator Installation - With GenMon MobileLink installed, our 24/7 monitoring program which includes annual maintenance!
Automatic Transfer Switch Installed - shown on the left with the customers electrical panel on the right.
Additional Photos
Additional Photos
Additional Photos

+5

Response time3 days
Response rate100%
8 neighbors recently requested a quote
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Avatar for Cote Electric, LLC
Cote Electric, LLC
4.9(
46
)
Fixed Generator - InstallFixed Generator - Repair

Serving Nottingham, NH and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1987

Free estimates

Credit card accepted

"Yearly service. I highly recommend Cote Electric for generator install and service!"
Standby Generator installed in the back of family's home.
Generator Install
Generator Maintenance
Response time3 days
375 neighbors recently requested a quote
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Avatar for Smith Electrical
Smith Electrical
4.9(
111
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Nottingham, NH and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Working with Joel from start to finish was great! Very up front about the process, costs, and ensured he delivered on what I wanted and needed. Joel was extremely punctual with great communication which made my generator installation go very smooth. Pricing was extremely fair and I plan on using Smith electrical in the future for other projects. I would highly recommend Joel and his team!"
Ready for backup power
Our Work
Our Work
Our Work
Our Work

+13

Response time2 days
15 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Angell Electric
Angell Electric
5.0(
30
)
Portable Generator - Install

Serving Nottingham, NH and surrounding areas

Approved

In business since 2019

Credit card accepted

Offers commercial services

Angell Electric is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!\n\nCleaner \ntrust worthy \nfair pricing compared to others\nPanel upgrades are an opportunity help\n\nM-F 7-7\n\nSat 8-5

Project Photos
3 neighbors recently requested a quote
Recommended by17%of homeowners
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Avatar for Loyal Lab Electric & Generators
Loyal Lab Electric & Generators
5.0(
5
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair

Serving Nottingham, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Loyal Lab Electric & Generators is a locally owned electrical contractor serving Dover, Portsmouth, Rochester, and the NH Seacoast from our base in Somersworth, NH. Owner and NH Master Electrician Eric Hope has been in the trade since 2008 and founded this company in 2018. \n\nWe are an authorized Generac dealer with certified service technician's on staff, specializing in whole-home generator installation, electrical panel upgrades, EV charger installation, and electrical repairs. We serve residential customers across the NH Seacoast and southern Maine. NH Master Electrician License 13956. \n\nEvery job we complete donates to The Rusty Fund, supporting local dog rescues through our partnership with Pope Memorial Humane Society in Dover.

Past Projects
Past Projects
Past Projects
Past Projects
Past Projects

+13

20 neighbors recently requested a quote
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Avatar for Mr. Electric of Southeast NH
Mr. Electric of Southeast NH
4.7(
91
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Nottingham, NH and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Yes we had a Major snow storm and I needed a generator battery and they where out there the next morning to charge it and BRIAN HOWE WAS GREAT and even but me some slack I highly recommend them Mr electric thank you"
Lighting
EV Charger
Panel
200A Service
Kitchen Lighting

+1

Response time8 hrs
Response rate88%
2 neighbors recently requested a quote
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Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
13
)
Fixed Generator - InstallFixed Generator - Repair

Serving Nottingham, NH and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Electrical & Security Solutions are the best! I have needed their services more than once to replace lights, a ceiling fan and also to install a new electrical box and breaker for our garbage disposal. Tyler promptly responded every time I called and he and Casey are both friendly, efficient and skillful. Aside from the excellent service, the qualities I appreciate the most is honesty for what work needs to be done and how Tyler is also very budget consciousness."
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting

+10

Response time7 hrs
Response rate100%
8 neighbors recently requested a quote
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Avatar for LaPlante Electric, Inc.
LaPlante Electric, Inc.
4.4(
71
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Nottingham, NH and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"Very professional and did our generator installation very efficiently."
Whole House Generac Generator 22 Kilowatt (KW)
Top View of a 22 Kilowatt (KW) Generac Generator
Internals of 22 Kilowatt (KW) Generac Generator
Back of 22 Kilowatt (KW) Generac Generator
200 AMP Whole House Transfer Switch

+8

Response time3 days
53 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Hewson Electric LLC
Hewson Electric LLC
5.0(
14
)
Portable Generator - Install

Serving Nottingham, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Hewson Electric could not have done better with our new detached garage! They even installed a generator on my new structure and it couldn’t look more professional. So happy with them, I will never call another contractor for electrical work!!!"
Stair tread lighting
Stair tread lighting
Stair tread lighting
Stair tread lighting
4 neighbors recently requested a quote
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Angell Electric
5.0(
20
)
Portable Generator - Install

Serving Nottingham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Small jobs welcome

"We were very happy with the work.Eric was easy to work with. He installed a new 220 circuit and was able to fish it though the walls harmlessly whereas other electricians we talk with were going to tear up the drywall. Pricing was very reasonable. Highly recommend."
Response time2 days
7 neighbors recently requested a quote
Recommended by27%of homeowners
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Showing 1-10 of 100
Generator Install questions, answered by experts

In most cases, there are no tax credits available for home generators. However, that’s a general statement that applies to federal tax credits, so you might have access to state or local tax incentives. You can check the Database of State Incentives for Renewables & Efficiency (DSIRE) for more information about your area. If you hire a reliable home generator installer, they should also know if there are any state or local perks you can use to reduce your installation costs, including tax breaks and rebates.

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. 

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

The Nottingham, NH 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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