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*The Angi rating for Generator Install companies in Jaffrey, 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 Jaffrey, 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 March 31, 2026

Top-Rated Generator install pros in Jaffrey - Updated Nov 2026

Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
4.8(
35
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Jaffrey, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Joey Knowles performed our annual maintenance for our generator. He was knowledgeable and exceptional in explaining all features of our generator and very thorough with his work. Thanks so much. Stephen and Deb Hughes."
22KW Installation
18KW Installation
Preparation for the day
Photos
Response time1 day
Response rate98%
85 neighbors recently requested a quote
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Avatar for Pellerin Electric, LLC
Pellerin Electric, LLC
4.6(
84
)
Fixed Generator - InstallPortable Generator - Install

Serving Jaffrey, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"They attended my call immediately and shown up to do the job as per schedule. All services was ok. However it tooks them a week or so for sendind a correct bill and it was a little pricy Considering what was done."
2 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Let It Glow Electric, LLC
Let It Glow Electric, LLC
4.6(
32
)
Portable Generator - Install

Serving Jaffrey, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Justin did great job, intalled the hookup and the transfer switch for the portable generator. Worked in freezing temperature outside. The only downside was that the install was postponed few times because he was waiting for the parts"
Exterior
Kitchen
Main service
Transfer switch and main panel
Canopy recessed cans retrofit

+27

Response time1 day
4 neighbors recently requested a quote
Recommended by76%of homeowners
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Avatar for A.B. Precision Electric
A.B. Precision Electric
5.0(
5
)
Generator - Install - For Business

Serving Jaffrey, NH and surrounding areas

Approved

In business since 2017

Credit card accepted

Customers say: Quality work

"Austin is a fabulous electrician and did a superb job getting this 20000Kw generator hooked up! It was a sincere pleasure having him at my home—my go to electrician from now on!!!"
200amp main panel
Old pushmatic panel
pushmatic
inside pushmatic panel
middle of installation

+6

Response time3 days
Recommended by100%of homeowners
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Avatar for A2K Electric, LLC
A2K Electric, LLC
5.0(
5
)
Portable Generator - Install

Serving Jaffrey, NH and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"Andrew was gracious, professional and went right to work and finished the job when he said he would. I would recommend him highly."
New Panel Install
Recommended by100%of homeowners
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Avatar for Brens Electric LLC
Brens Electric LLC
5.0(
1
)
Generator - Install - For BusinessPortable Generator - Install

Serving Jaffrey, NH and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

We bring years of proven experience and a strong work ethic to every project we undertake. As a fully licensed and insured electrical contractor, we combine technical expertise, attention to detail, and strict compliance with all applicable electrical codes and safety standards. Our work is performed with professionalism, precision, and accountability. Whether managing complex electrical systems or providing routine maintenance, every task is completed with a focus on quality, reliability, and long-term performance. Our goal is to build lasting relationships built on trust, consistency, and exceptional service.\n

800A Service Upgrade
800A Service Upgrade
7 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

If your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

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 Jaffrey, 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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