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Avatar for TJB Electric LLC
TJB Electric LLC
5.0(
18
)
Fixed Generator - Install

Serving Granby, MA and surrounding areas

Approved

In business since 2013

Free estimates

Customers say: True professional

"Travis came to look at the problem on a Tuesday morning. When I explained to him that lights in the house were flickering he became concerned and put my job on the top of his list. Once he arrived he immediately diagnosed the problem as many of the circuits in the box had deteriorated due to moisture in the line. He fixed the bad circuit in question and showed me the problem and explained that due to the age, oxidation, and rust that I may have future issues with the remaining circuits. I decided to replace the entire circuit panel and circuits as well as have a new meter with new wiring and drip lines installed on the exterior of the house, as the old meter was also corroded and detaching from the siding.. Travis returned early the following day at the exact hour we had agreed upon and worked a full eight hours to complete the entire job. His work is exemplary: very neat and methodical and whenever I had a question he would answer it in detail. His work was completed within the 2 days and came to approximately 10 hours in total. He supplied all the necessary materials and had everything he needed on hand in his truck.. I recommend him very highly as a skilled and experienced electrician located in Berkshire County."
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2 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for T K Lyden Electric & Generator, Inc.
T K Lyden Electric & Generator, Inc.
3.9(
114
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+1 more

Serving Granby, MA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"The two young men who performed the installation were informative, professional, cordial, and they left the scene spotless. There was a technical problem with the engine on the generator itself, which they weren't able to help with, because they weren't licensed to work on the specific brand of generator. That might be something to check on before hiring for this type of job."
 Your standard 10 circuit
 Generac Whole House 20kW
 Mike and Will with a new 20kW
 Generac 20kW
 A

+45

Response time1 day
36 neighbors recently requested a quote
Recommended by91%of homeowners
T K Lyden Electric & Generator, Inc.
3.9(
114
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Granby, MA and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

T.K. Lyden Electric & Generator Inc. is a family owned electrical contractor with over 50 years of experience serving Central & Western Massachusetts and Southern New Hampshire. We provide complete standby power solutions featuring Generac, Kohler, Briggs & Stratton, Honeywell, and other major brands. Our team offers installation, repairs, warranty service, and annual maintenance plans.

2 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Paul R. Bachand Electric
Paul R. Bachand Electric
5.0(
14
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Granby, MA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"I recently hired Paul to complete some electrical work in my home and I couldn't be more satisfied! From the initial consultation to the completion of the job, Paul was professional, timely, efficient, and knowledgable."
Remodel/ gut for space above garage for a raised ranch home
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+28

Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Slingerland Electrical Services
Slingerland Electrical Services
4.9(
52
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Granby, MA and surrounding areas

Approved

In business since 2011

Free estimates

Offers commercial services

"I hired Mike for a back-up generator installation. Very quick response, very good communication: he explained everything thoroughly, and invited questions. Mike is very professional, while still being personable and pleasant to deal with. I would call him again for future work."
9 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Paciorek Electric Inc
Paciorek Electric Inc
4.7(
30
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Granby, MA and surrounding areas

Approved

In business since 1997

Emergency services offered

Credit card accepted

"Paciorek Electric was terrific at getting out to us quickly. MA was slammed with power outages (10/16/19) . Our generator was down (we hadn't had it serviced in years) and they came out right away to do a full service, repair, replaced battery, and spark plugs. We're up and running again. We will use them again for a regular service call when it's due."
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Response time3 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Kyle Messier Electrician
5.0(
11
)
Portable Generator - Install

Serving Granby, MA and surrounding areas

Approved

In business since 2023

Customers say: Quick response

"Kyle showed up on time and , completed his work, and cleaned up after he was done. Had an issue with the height of my light fixture and he showed up the very next day, made necessary changes, and everything works well. While he was here he looked at a smoke alarm issue that I was having and he corrected that too. Very professional and clear in his explanations of work to be completed. I would definitely hire him again"
Kitchen lighting
Dinning room light
Response time7 hrs
Response rate90%
8 neighbors recently requested a quote
Avatar for Hurley & David
Hurley & David
4.5(
17
)
Fixed Generator - InstallPortable Generator - Install

Serving Granby, MA and surrounding areas

Approved

In business since 1960

Free estimates

Credit card accepted

Hurley and David, Inc is a full-service air conditioning and heating contractor with the ability to service and install complete heating and air conditioning systems. In addition to scheduled service checks, repairing of existing equipment, and installation of new equipment, we can help you find ways to reduce your energy bills through a thorough cost-benefits analysis. We have an extensive history of repair service on all brands of central air conditioning and heating systems.\n

Recommended by75%of homeowners
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Generator Install questions, answered by experts

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. 

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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. 

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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

The Granby, MA homeowners’ guide to generator installs

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