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Best generator install pros near Petersham, MA

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

T K Lyden Electric & Generator, Inc.
3.9(
114
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Petersham, 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.

10 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Thomas A. Jennette Electric
Thomas A. Jennette Electric
4.5(
10
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Petersham, MA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"One thing I really liked about his work was the attention to detail and he made sure things were done right, not just fast. He goes out of his way to make the installation easy to work on in the future if need be. And it is very neatly done."
Bathroom remodel
Kitchen Remodel
Sub-panel move
Main Service Drop
Response time1 day
Recommended by100%of homeowners
Avatar for Northeast Power, LLC
Northeast Power, LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Petersham, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"My solar inverter stopped working in my existing solar system, and since my original installer went out of business, I had a hard time finding someone to replace the inverter provided by SolarEdge. It was a small job, and most large companies weren’t interested, while those willing to help were booked out for at least a couple of months. I contacted Justin, and he replaced the inverter within just a few days. He was very friendly, efficient, and offered a very reasonable price. Justin was also extremely knowledgeable, explained everything clearly, and kept me updated throughout the process. He arrived on time, completed the work neatly, and made sure the system was running perfectly before leaving. Overall, his professionalism, honesty, and dedication to customer satisfaction made the whole experience stress-free and smooth."
Northeast Power
Northeast Power
Northeast Power
Northeast Power
Northeast Power

+2

15 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Nathan Ufema
Nathan Ufema
5.0(
2
)
Fixed Generator - InstallPortable Generator - Install

Serving Petersham, MA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"We had Nathan from Ufema Electric complete a rewire of our entire finished basement. He provided a comprehensive estimate in a very timely fashion. The estimate was reasonable and Nathan was able to complete the job right away. We found him to be not only very skilled, but extremely polite, and respectful to our home - great job cleaning up after each workday! We are very happy with the results and will be using Ufema Electric in the future for any electrical needs. I would highly recommend Nathan and Ufema Electric."
New panel install
New panel install
New panel install
Garage smoke detectors
Recessed lighting install

+4

15 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

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.

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.

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. 

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

The Petersham, MA homeowners’ guide to generator installs

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